THE FIRST DETECTION OF THE NEAR INFRARED CN BAND IN ACTIVE GALACTIC NUCLEI

Size: px
Start display at page:

Download "THE FIRST DETECTION OF THE NEAR INFRARED CN BAND IN ACTIVE GALACTIC NUCLEI"

Transcription

1 THE FIRST DETECTION OF THE NEAR INFRARED CN BAND IN ACTIVE GALACTIC NUCLEI Rogério Riffel IF/UFRGS Miriani G. Pastoriza IF/UFRGS Alberto Rodríguez Ardila LNA Claudia Maraston University of Oxford

2 ABSTRACT We present the first detection of the near infrared CN absorption band in the nuclear spectra of active galactic nuclei (AGN). This feature is a recent star formation tracer, being particularly strong in carbon stars. The equivalent width of the CN line correlates with that of the CO at 2.3 m, as expected in stellar populations with ages between ~0.2 and ~2 Gyrs. The presence of the 1.1 m CN band in the spectra of the sources is taken as an unambiguous evidence of the presence of young/intermediate stellar populations close to the central source of the AGN. Near infrared bands can be powerful age indicators for star formation connected to AGN, the understanding of which is crucial in the context of galaxy formation and AGN feedback.

3 INTRODUCTION It is widely known that circumnuclear star formation is commonly detected in AGN. In fact, in the last years, increasing observational evidence has confirmed that nuclear/circumnuclear starbursts coexists in objects harboring an AGN, giving support to the so called AGN SB connection. Stellar absorption features in the infrared are widely believed to provide a way for recognizing red supergiants, they arise as prime indicators for tracing starburst in galaxies. In this line of thought, the evolutionary population synthesis calculation of Maraston (2005) foresees the presence of molecular features like CH, CN and C 2. They arise in young/intermediate stellar populations and their spectral signatures are particularly enhanced in the NIR. Of particular importance are the CN bands, which arise according to the models, from stars with ages in the range between 0.2 and 2 Gyr and are attributed to stars in the thermally pulsing asymptotic giant branch (TP AGB) phase. Here we present the first detection of the nearinfrared CN absorption band in the nuclear spectra of AGNs.

4 THE DATA The Galaxies chosen for this work are the ones presented by Riffel et al. (2006); The spectra were obtained at the NASA Infrared Telescope Facility, using the 3 m infrared optimized telescope; The SpeX spectrograph was used in the short cross dispersed mode; A 0.8 x 15 slit was employed giving a spectral resolution of 360 Km/s;

5 Zoom of the 1.1 µm CN and 2.2 µm CO bands.

6 THE STRENGTHS OF THE CN BAND We have modeled the emission lines that affect the CN band; Pa width and flux was constrained to those of Pa, using the calculations of Hummer & Storey (1987). For the He I emission line we have adjusted a Gaussian to the emission line profile; The model was subtracted Model for the emission lines around the CN band and the band free from emission lines. from the spectra.

7 OBSERVATIONS VS MODELS CN equivalent widths vs CO equivalent widths. Observations vs models. The observed values are indeed consistent with the models prediction; The strengths of two bands are correlated; The CO band is also present in the TP AGB spectra, explaining the correlation between the W of CN and CO; The galaxies can be separated into two main groups according to their chemical composition.

8 Final Remarks We present the first detection of the 1.1 m CN band in the inner 300 pc of an AGN; The presence of such band can be taken as an unambiguous evidence of stellar populations with ages in the range of ~0.2 to ~2 Gyr; We have modeled the emission line spectrum in order to quantify properly the strengths of the NIR CN absorption band; We find a nice consistency of the observed and predicted values for ages around 1 Gyr;

The near-ir stellar populations of active galaxies

The near-ir stellar populations of active galaxies Future & Science of Gemini Observatory Toronto 2015 The near-ir stellar populations of active galaxies Rogério Riffel riffel@ufrgs.br FSG15 Toronto, Canada 1 Motivation The NIR stellar content of active

More information

Active Galactic Nuclei research with SOAR: present and upcoming capabilities

Active Galactic Nuclei research with SOAR: present and upcoming capabilities Active Galactic Nuclei research with SOAR: present and upcoming capabilities SOAR 2020 WORKSHOP CBPF Rio de Janeiro March 13 15 / 2017 Courtesy: Gabriel Maturana/NOAO/AURA/NSF Alberto Rodríguez Ardila

More information

Krista Lynne Smith M. Koss R.M. Mushotzky

Krista Lynne Smith M. Koss R.M. Mushotzky Krista Lynne Smith M. Koss R.M. Mushotzky Texas Symposium December 12, 2013 X-ray Bright, Optically Normal Galaxy Luminous compact hard X-ray source No optical emission lines to indicate nuclear activity.

More information

3D Spectroscopy to Dissect Galaxies Down to Their Central Supermassive Black Holes. Kambiz Fathi. Stockholm University, Sweden

3D Spectroscopy to Dissect Galaxies Down to Their Central Supermassive Black Holes. Kambiz Fathi. Stockholm University, Sweden 3D Spectroscopy to Dissect Galaxies Down to Their Central Supermassive Black Holes Kambiz Fathi Stockholm University, Sweden Towards a better understanding of the Hubble Diagram Towards a better understanding

More information

Central supermassive black holes from SINFONI observations

Central supermassive black holes from SINFONI observations Central supermassive black holes from SINFONI observations R.P Saglia, MPE with R.Bender, N.Nowak, P. Erwin, J. Thomas Gas and stars in Galaxies A Multi-Wavelength 3D Perspective Garching, 10th June 2008

More information

arxiv:astro-ph/ v1 18 May 2006

arxiv:astro-ph/ v1 18 May 2006 Astronomy & Astrophysics manuscript no. atlas accepted c ESO 2008 May 4, 2008 A 0.8-2.4 µm spectral atlas of Active Galactic Nuclei arxiv:astro-ph/0605463v1 18 May 2006 R. Riffel 1 ; A. Rodríguez-Ardila

More information

Raven Eyes Elliptical Galaxies and Star Clusters. T. J. Davidge November 24, 2015

Raven Eyes Elliptical Galaxies and Star Clusters. T. J. Davidge November 24, 2015 Raven Eyes Elliptical Galaxies and Star Clusters T. J. Davidge November 24, 2015 Why Maffei1 and the Glimpse Clusters? Targets were selected at low Galactic latitudes to maximize chances of finding a suitable

More information

Stellar Population Synthesis: The Role of Adaptive Optics

Stellar Population Synthesis: The Role of Adaptive Optics Stellar Population Synthesis: The Role of Adaptive Optics Jason Melbourne (Caltech) Nearby (2.5 Mpc) Dwarf Irregular Galaxy KKH 98 HST F475W (Blue), HST F814W (Green), Keck AO K-band (red) Melbourne et

More information

arxiv: v1 [astro-ph.co] 15 Feb 2013

arxiv: v1 [astro-ph.co] 15 Feb 2013 Mon. Not. R. Astron. Soc. 000, 1 37 (2009) Printed 18 February 2013 (MN LATEX style file v2.2) A Spectral Atlas of HII Galaxies in the Near-Infrared arxiv:1302.3853v1 [astro-ph.co] 15 Feb 2013 Lucimara

More information

1 Lecture, 2 September 1999

1 Lecture, 2 September 1999 1 Lecture, 2 September 1999 1.1 Observational astronomy Virtually all of our knowledge of astronomical objects was gained by observation of their light. We know how to make many kinds of detailed measurements

More information

A Unified Model for AGN. Ryan Yamada Astro 671 March 27, 2006

A Unified Model for AGN. Ryan Yamada Astro 671 March 27, 2006 A Unified Model for AGN Ryan Yamada Astro 671 March 27, 2006 Overview Introduction to AGN Evidence for unified model Structure Radiative transfer models for dusty torus Active Galactic Nuclei Emission-line

More information

Extraction of Point Source Spectra from STIS Long Slit Data

Extraction of Point Source Spectra from STIS Long Slit Data 1997 HST Calibration Workshop Space Telescope Science Institute, 1997 S. Casertano, et al., eds. Extraction of Point Source Spectra from STIS Long Slit Data J. R. Walsh Spect Telescope European Coordinating

More information

Debate on the toroidal structures around hidden- vs non hidden-blr of AGNs

Debate on the toroidal structures around hidden- vs non hidden-blr of AGNs IoA Journal Club Debate on the toroidal structures around hidden- vs non hidden-blr of AGNs 2016/07/08 Reported by T. Izumi Unification scheme of AGNs All AGNs are fundamentally the same (Antonucci 1993)

More information

arxiv:astro-ph/ v1 19 Sep 2006

arxiv:astro-ph/ v1 19 Sep 2006 Stars and Gas in the Inner Parts of Galaxies seen in SAURON Integral Field Observations R.F. Peletier a, K. Fathi a, arxiv:astro-ph/0609551v1 19 Sep 2006 a Kapteyn Astronomical Institute, University of

More information

Thaisa Storchi Bergmann Instituto de Física, UFRGS, Porto Alegre, RS, Brazil

Thaisa Storchi Bergmann Instituto de Física, UFRGS, Porto Alegre, RS, Brazil [Fe II] and H 2 Outflows N Far side E Inflows -600-520 -440-360 -280-200 -120-40 2 1 0 1 2 40 120 200 280 360 440 520 600 2 1 0 1 2 Thaisa Storchi Bergmann Instituto de Física, UFRGS, Porto Alegre, RS,

More information

arxiv: v1 [astro-ph.sr] 13 Apr 2018

arxiv: v1 [astro-ph.sr] 13 Apr 2018 AKARI color useful for classifying chemical types of Miras Noriyuki Matsunaga 1 1 Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan arxiv:1804.04940v1 [astro-ph.sr]

More information

Age Dating A SSP. Quick quiz: please write down a 3 sentence explanation of why these plots look like they do.

Age Dating A SSP. Quick quiz: please write down a 3 sentence explanation of why these plots look like they do. Color is only a weak function of age after ~3Gyrs (for a given metallicity) (See MBW pg 473) But there is a strong change in M/L V and weak change in M/L K Age Dating A SSP Quick quiz: please write down

More information

The Milky Way Nuclear Star Cluster beyond 1 pc

The Milky Way Nuclear Star Cluster beyond 1 pc The Milky Way Nuclear Star Cluster beyond 1 pc Anja Feldmeier, Nadine Neumayer, Anil Seth, Rainer Schödel, P. T. de Zeeuw, Nora Lützgendorf, C. J. Walcher, Shogo Nishiyama, Markus Kissler-Patig Oct. 1,

More information

1. The AGB dust budget in nearby galaxies

1. The AGB dust budget in nearby galaxies **Volume Title** ASP Conference Series, Vol. **Volume Number** **Author** c **Copyright Year** Astronomical Society of the Pacific Identifying the chemistry of the dust around AGB stars in nearby galaxies

More information

ACTIVE GALACTIC NUCLEI I. AN INTRODUCTION Sebastian F. Hoenig Lecturer & Marie Curie Fellow Outline and learning goals I. Phenomenology What are AGN? How are they identified? II. Energy output Where is

More information

Galactic Bulge Science

Galactic Bulge Science Galactic Bulge Science Ken Freeman Australian National University ngcfht meeting Hilo, Mar 27-29 2013 NGC 5746 1 The Galactic bulge was long thought to be a merger product. We now know that boxy bulges

More information

Identification of seven persistent low-luminosity pulsators. Ramanpreet Kaur University of Amsterdam

Identification of seven persistent low-luminosity pulsators. Ramanpreet Kaur University of Amsterdam Identification of seven persistent low-luminosity pulsators Ramanpreet Kaur University of Amsterdam Physics of neutron stars -2011 St Petersburg, Russia Low-luminosity pulsators Slowly pulsating (Ps >

More information

The Superbubble Power Problem: Overview and Recent Developments. S. Oey

The Superbubble Power Problem: Overview and Recent Developments. S. Oey The Superbubble Power Problem: Overview and Recent Developments S. Oey It has been known for decades that superbubbles generated by massive star winds and supernovae are smaller than expected based on

More information

Astro2010 Science White Paper: Tracing the Mass Buildup of Supermassive Black Holes and their Host Galaxies

Astro2010 Science White Paper: Tracing the Mass Buildup of Supermassive Black Holes and their Host Galaxies Astro2010 Science White Paper: Tracing the Mass Buildup of Supermassive Black Holes and their Host Galaxies Anton M. Koekemoer (STScI) Dan Batcheldor (RIT) Marc Postman (STScI) Rachel Somerville (STScI)

More information

Stellar Evolution & issues related to the post Turn-Off evolution

Stellar Evolution & issues related to the post Turn-Off evolution Stellar Evolution & issues related to the post Turn-Off evolution Santi Cassisi INAF - Astronomical Observatory of Teramo, Italy The point of view of Population Synthesis users What do they want? Magnitudes

More information

Review from last class:

Review from last class: Review from last class: Properties of photons Flux and luminosity, apparent magnitude and absolute magnitude, colors Spectroscopic observations. Doppler s effect and applications Distance measurements

More information

Comparison between 30 micron sources in different galaxies

Comparison between 30 micron sources in different galaxies Journal of Physics: Conference Series PAPER OPEN ACCESS Comparison between 30 micron sources in different galaxies To cite this article: Marcin Gadkowski et al 2016 J. Phys.: Conf. Ser. 728 062007 View

More information

The Cornell Atlas of Spitzer Spectra (CASSIS) and recent advances in the extraction of complex sources

The Cornell Atlas of Spitzer Spectra (CASSIS) and recent advances in the extraction of complex sources The Cornell Atlas of Spitzer Spectra (CASSIS) and recent advances in the extraction of complex sources V. Lebouteiller (CEA & Cornell University) D.J. Barry, G.C. Sloan, H.W.W. Spoon, D.W. Weedman, J.R.

More information

A M BLACK HOLE IN NGC 1277 FROM ADAPTIVE OPTICS SPECTROSCOPY. WALSH et al Akiyama Group M1 Genki Suzuki

A M BLACK HOLE IN NGC 1277 FROM ADAPTIVE OPTICS SPECTROSCOPY. WALSH et al Akiyama Group M1 Genki Suzuki A 5 10 9 M BLACK HOLE IN NGC 1277 FROM ADAPTIVE OPTICS SPECTROSCOPY WALSH et al. 2015 Akiyama Group M1 Genki Suzuki Introduction NGC 1277 is thought to harbor one of the most massive black holes in the

More information

Mapping the Spatial Distribution of H 2 in Nearby Galaxies with the Spitzer Infrared Spectrograph

Mapping the Spatial Distribution of H 2 in Nearby Galaxies with the Spitzer Infrared Spectrograph The Evolving ISM in the Milky Way & Nearby Galaxies Mapping the Spatial Distribution of H 2 in Nearby Galaxies with the Spitzer Infrared Spectrograph Gregory Brunner 1, Reginald Dufour 1, Kartik Sheth

More information

Measuring Black Hole Masses in Nearby Galaxies with Laser Guide Star Adaptive Optics

Measuring Black Hole Masses in Nearby Galaxies with Laser Guide Star Adaptive Optics Measuring Black Hole Masses in Nearby Galaxies with Laser Guide Star Adaptive Optics Claire Max Anne Medling Mark Ammons UC Santa Cruz Ric Davies Hauke Engel MPE-Garching Image of NGC 6240: Bush et al.

More information

Introduction of near-infrared (NIR) spectroscopy. Ken-ichi Tadaki (NAOJ)

Introduction of near-infrared (NIR) spectroscopy. Ken-ichi Tadaki (NAOJ) Introduction of near-infrared (NIR) spectroscopy Ken-ichi Tadaki (NAOJ) Near-infrared in astronomy absorption by terrestrial atmosphere - wavelength range of 1-5 um - observable windows are limited (J,

More information

Feeding and Feedback in U/LIRGs: ALMA Case Studies

Feeding and Feedback in U/LIRGs: ALMA Case Studies Feeding and Feedback in U/LIRGs: ALMA Case Studies Kazushi Sakamoto 2015-06-01, "Galaxies of many colours" @Marstrand, Sweden Feedback in U/LIRGs: ALMA Studies on NGC 3256 and Arp 220 NGC 3256 Dual molecular

More information

Feeding and feedback in nearby AGN comparison with the Milky Way center

Feeding and feedback in nearby AGN comparison with the Milky Way center The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus Proceedings IAU Symposium No. 303, 2013 c International Astronomical Union 2014 L. O. Sjouwerman, C. C. Lang & J. Ott doi:10.1017/s174392131400091x

More information

arxiv: v1 [astro-ph.co] 19 Nov 2011

arxiv: v1 [astro-ph.co] 19 Nov 2011 PASJ: Publ. Astron. Soc. Japan, 1??, c 2018. Astronomical Society of Japan. OAO/ISLE Near-IR Spectroscopy of IRAS Galaxies arxiv:1111.4522v1 [astro-ph.co] 19 Nov 2011 Y. Matsuoka, F.-T. Yuan, Y. Takeuchi

More information

SALT s Venture into Near Infrared Astronomy with RSS NIR

SALT s Venture into Near Infrared Astronomy with RSS NIR SALT s Venture into Near Infrared Astronomy with RSS NIR Marsha Wolf University of Wisconsin Madison IUCAA RSS VIS future RSS NIR 5 June 2015 SALT Science Conference 2015 2 Robert Stobie Spectrograph 5

More information

Feeding and feedback in the active nucleus of Mrk 1157 probed with the Gemini Near-Infrared Integral-Field Spectrograph

Feeding and feedback in the active nucleus of Mrk 1157 probed with the Gemini Near-Infrared Integral-Field Spectrograph Mon. Not. R. Astron. Soc. 417, 2752 2769 (2011) doi:10.1111/j.1365-2966.2011.19441.x Feeding and feedback in the active nucleus of Mrk 1157 probed with the Gemini Near-Infrared Integral-Field Spectrograph

More information

IR Instrumentation & AGN: Revealing Inner Secrets. Chris Packham University of Florida 7 th October, 2011

IR Instrumentation & AGN: Revealing Inner Secrets. Chris Packham University of Florida 7 th October, 2011 IR Instrumentation & AGN: Revealing Inner Secrets Chris Packham University of Florida 7 th October, 2011 Presentation Outline T λ" i m e! Instrumentation past, present, and near future INGRID MMT-POL T-ReCS,

More information

Lecture 30. The Galactic Center

Lecture 30. The Galactic Center Lecture 30 History of the Galaxy Populations and Enrichment Galactic Evolution Spiral Arms Galactic Types Apr 5, 2006 Astro 100 Lecture 30 1 The Galactic Center The nature of the center of the Galaxy is

More information

HI clouds near the Galactic Center:

HI clouds near the Galactic Center: PHISCC 217 February 7th, Pune HI clouds near the Galactic Center: Possible tracers for a Milky-Way nuclear wind? Enrico Di Teodoro Research School of Astronomy and Astrophysics Australian National University

More information

Infrared Spectroscopy of the Black Hole Candidate GRO J

Infrared Spectroscopy of the Black Hole Candidate GRO J Infrared Spectroscopy of the Black Hole Candidate GRO J1655-40 1 Francis T. O Donovan March 19th, 2004 1 Based on a paper by F. T. O Donovan & P. J. Callanan (in preparation). Black Holes in the Sky At

More information

Scale height and Luminosity

Scale height and Luminosity The Milky Way I suggest to consult the excellent lectures held at Saas-Fee by Gilmore, King and van der Kruit in the Book The Milky Way as a Galaxy edited by Buser & King and published by the University

More information

Compact Obscured Nuclei in the ALMA era

Compact Obscured Nuclei in the ALMA era Compact Obscured Nuclei in the ALMA era Francesco Costagliola Chalmers University of Technology- Onsala Space Observatory Istituto de Astrofísica de Andalucía (IAA-CSIC) S.Aalto, S. Muller, K. Sakamoto,

More information

arxiv: v1 [astro-ph.co] 21 May 2013

arxiv: v1 [astro-ph.co] 21 May 2013 arxiv:1305.4938v1 [astro-ph.co] 21 May 2013 Max-Planck-Insitut für Radioastronomie (MPIfR), Bonn, Germany E-mail: smajic@ph1.uni-koeln.de Sebastian Fischer E-mail: fischer@ph1.uni-koeln.de Jens Zuther

More information

Galaxies of Many Colours: Star Formation Across Cosmic Time. z=0, t= /-0.037x10 9 years (Now)

Galaxies of Many Colours: Star Formation Across Cosmic Time. z=0, t= /-0.037x10 9 years (Now) Galaxies of Many Colours: Star Formation Across Cosmic Time z=0, t=13.798+/-0.037x10 9 years (Now) And if you want to study the initial conditions for star formation the colour is black Dense Gas SDC335:

More information

Stars with Mⵙ go through two Red Giant Stages

Stars with Mⵙ go through two Red Giant Stages Astronomy A. Dayle Hancock adhancock@wm.edu Small 239 Office hours: MTWR 10-11am Death of Stars Nuclear reactions in small stars How stars disperse carbon How low mass stars die The nature of white dwarfs

More information

GALACTIC Al 1.8 MeV GAMMA-RAY SURVEYS WITH INTEGRAL

GALACTIC Al 1.8 MeV GAMMA-RAY SURVEYS WITH INTEGRAL Proceedings of the 3rd Galileo Xu Guangqi Meeting International Journal of Modern Physics: Conference Series Vol. 23 (2013) 48 53 c World Scientific Publishing Company DOI: 10.1142/S2010194513011069 GALACTIC

More information

Star Formation Indicators

Star Formation Indicators Star Formation Indicators Calzetti 2007 astro-ph/0707.0467 Brinchmann et al. 2004 MNRAS 351, 1151 SFR indicators in general! SFR indicators are defined from the X ray to the radio! All probe the MASSIVE

More information

The parsec scale of. ac-ve galac-c nuclei. Mar Mezcua. International Max Planck Research School for Astronomy and Astrophysics

The parsec scale of. ac-ve galac-c nuclei. Mar Mezcua. International Max Planck Research School for Astronomy and Astrophysics The parsec scale of ESO ac-ve galac-c nuclei International Max Planck Research School for Astronomy and Astrophysics COST Ac(on MP0905 - Black Holes in a Violent Universe In collaboration with A. Prieto,

More information

Nuclear Star Formation, The Torus, & Gas Inflow in Seyfert Galaxies

Nuclear Star Formation, The Torus, & Gas Inflow in Seyfert Galaxies Nuclear Star Formation, The Torus, & Gas Inflow in Seyfert Galaxies Richard Davies 1, H. Engel 1, M. Schartmann 1, G. Orban de Xivry 1, E. Sani 2, E. Hicks 3, A. Sternberg 4, R. Genzel 1, L. Tacconi 1,

More information

Circumnuclear Gaseous Kinematics and Excitation of Four Local Radio Galaxies

Circumnuclear Gaseous Kinematics and Excitation of Four Local Radio Galaxies Circumnuclear Gaseous Kinematics and Excitation of Four Local Radio Galaxies Guilherme S. Couto T. Storchi-Bergmann, A. Robinson, R.A. Riffel, P. Kharb D. Lena, A. Schnorr-Müller UFSC, Florianópolis, Brazil

More information

Powering the Universe with Supermassive Black Holes. Steve Ehlert and Paul Simeon

Powering the Universe with Supermassive Black Holes. Steve Ehlert and Paul Simeon Powering the Universe with Supermassive Black Holes Steve Ehlert and Paul Simeon Overview Introduction to Galactic Nuclei Galactic Nuclear Activity Input and output energies. The aftermath of AGN flares.

More information

THE EMISSION AND DISTRIBUTION OF DUST OF THE TORUS OF NGC 1068

THE EMISSION AND DISTRIBUTION OF DUST OF THE TORUS OF NGC 1068 THE EMISSION AND DISTRIBUTION OF DUST OF THE TORUS OF NGC 1068 ENRIQUE LOPEZ RODRIGUEZ Instrument Scientist (HAWC+) Stratospheric Observatory For Infrared Astronomy (SOFIA) / NASA elopezrodriguez@nasa.gov

More information

NEARBY GALAXIES AND ALMA

NEARBY GALAXIES AND ALMA NEARBY GALAXIES AND ALMA Jean Turner, UCLA nearby galaxies close-up views of star formation & nuclear fueling on scales of GMCs and star clusters - where & how do galaxies form stars? - where does gas

More information

Neutron-capture element abundances in the globular clusters: 47 Tuc, NGC 6388, NGC 362 & ω Cen

Neutron-capture element abundances in the globular clusters: 47 Tuc, NGC 6388, NGC 362 & ω Cen Neutron-capture element abundances in the globular clusters: 47 Tuc, NGC 6388, NGC 362 & ω Cen C. C. Worley Université de Nice Sophia Antipolis, CNRS (UMR 6202), Observatoire de la Côte d Azur, Cassiopée,

More information

arxiv: v1 [astro-ph.ga] 29 Jan 2014

arxiv: v1 [astro-ph.ga] 29 Jan 2014 Astronomy& Astrophysics manuscript no. vdlaan_nirspec_pub ESO 2014 January 31, 2014 Near-Infrared long-slit spectra of Seyfert Galaxies: gas excitation across the central kiloparsec T.P.R. van der Laan

More information

AGN starburst connection in NGC 7582: Gemini near-infrared spectrograph integral field unit observations

AGN starburst connection in NGC 7582: Gemini near-infrared spectrograph integral field unit observations Mon. Not. R. Astron. Soc. 393, 783 797 (2009) doi:10.1111/j.1365-2966.2008.14250.x AGN starburst connection in NGC 7582: Gemini near-infrared spectrograph integral field unit observations Rogemar A. Riffel,

More information

Induced Nuclear Activity in nearby isolated galaxy pairs of different morphologies

Induced Nuclear Activity in nearby isolated galaxy pairs of different morphologies Induced Nuclear Activity in nearby isolated galaxy pairs of different morphologies J. Jesús González (IA-UNAM, México) Deborah Dultzin, Francisco Hernández Ibarra, Yair Krongold Asención del Olmo & Jaime

More information

THE LAST SURVEY OF THE OLD WSRT: TOOLS AND RESULTS FOR THE FUTURE HI ABSORPTION SURVEYS

THE LAST SURVEY OF THE OLD WSRT: TOOLS AND RESULTS FOR THE FUTURE HI ABSORPTION SURVEYS F. Maccagni; R. Morganti; T. Oosterloo; K. Geréb; N. Maddox, J. Allison THE LAST SURVEY OF THE OLD WSRT: TOOLS AND RESULTS FOR THE FUTURE HI ABSORPTION SURVEYS A SURVEY BEFORE THE BLIND SURVEYS During

More information

Multi-wavelength Surveys for AGN & AGN Variability. Vicki Sarajedini University of Florida

Multi-wavelength Surveys for AGN & AGN Variability. Vicki Sarajedini University of Florida Multi-wavelength Surveys for AGN & AGN Variability Vicki Sarajedini University of Florida What are Active Galactic Nuclei (AGN)? Galaxies with a source of non-stellar emission arising in the nucleus (excessive

More information

The Formation of Galaxy Nuclei

The Formation of Galaxy Nuclei The Formation of Galaxy Nuclei Anil Seth (Harvard-Smithsonian CfA University of Utah) Collaborators: Nadine Neumayer (ESO) Michele Cappellari (Oxford) Nelson Caldwell (Harvard-Smithsonian CfA), Bob Blum

More information

Probing the Origin of Supermassive Black Hole Seeds with Nearby Dwarf Galaxies. Amy Reines Einstein Fellow NRAO Charlottesville

Probing the Origin of Supermassive Black Hole Seeds with Nearby Dwarf Galaxies. Amy Reines Einstein Fellow NRAO Charlottesville Probing the Origin of Supermassive Black Hole Seeds with Nearby Dwarf Galaxies Amy Reines Einstein Fellow NRAO Charlottesville Motivation: The origin of supermassive BH seeds Motivation: The origin of

More information

arxiv:astro-ph/ v1 19 Feb 1999

arxiv:astro-ph/ v1 19 Feb 1999 Assessment of Tracers of 1.8 MeV Emission arxiv:astro-ph/992282v1 19 Feb 1999 J. Knödlseder 1, R.Diehl 2, U. Oberlack 5, P. vonballmoos 1, H.Bloemen 3, W. Hermsen 3, A. Iyudin 2, J. Ryan 4, and V. Schönfelder

More information

Connection between phenomenon of active nucleus and disk dynamics in Sy galaxies

Connection between phenomenon of active nucleus and disk dynamics in Sy galaxies Connection between phenomenon of active nucleus and disk dynamics in Sy galaxies Alexandrina Smirnova & Alexei Moiseev Special Astrophysical Observatory, Russian Academy of Sciences SAO RAS 6-m telescope

More information

Active Galaxies & Quasars

Active Galaxies & Quasars Active Galaxies & Quasars Normal Galaxy Active Galaxy Galactic Nuclei Bright Active Galaxy NGC 5548 Galaxy Nucleus: Exact center of a galaxy and its immediate surroundings. If a spiral galaxy, it is the

More information

Compact molecular disc and ionized gas outflows within 350 pc of the active nucleus of Mrk 1066

Compact molecular disc and ionized gas outflows within 350 pc of the active nucleus of Mrk 1066 Mon. Not. R. Astron. Soc. 411, 469 486 (2011) doi:10.1111/j.1365-2966.2010.17721.x Compact molecular disc and ionized gas outflows within 350 pc of the active nucleus of Mrk 1066 Rogemar A. Riffel 1 and

More information

The Far-Infrared Radio Correlation in Galaxies at High Redshifts

The Far-Infrared Radio Correlation in Galaxies at High Redshifts The Far-Infrared Radio Correlation in Galaxies at High Redshifts Plan A My own work aims and methodology My results so far Implications of my results What I plan to do next brief summary of the FIR-Radio

More information

Quantifying the Assembly History of Elliptical Galaxies

Quantifying the Assembly History of Elliptical Galaxies Quantifying the Assembly History of Elliptical Galaxies Michael Pierce (University of Wyoming) A Science Use Case for GMT and TMT Origin of Elliptical Galaxies! Elliptical Galaxies Form Through Mergers!

More information

AKARI Near-Infrared Spectroscopy Towards Young Stellar Objects

AKARI Near-Infrared Spectroscopy Towards Young Stellar Objects AKARI Near-Infrared Spectroscopy Towards Young Stellar Objects Aleksandra Ardaseva 1,TakashiOnaka 2 1 University of St Andrews, United Kingdom 2 Department of Astronomy, Graduate School of Science, University

More information

Chapter 10: Unresolved Stellar Populations

Chapter 10: Unresolved Stellar Populations Chapter 10: Unresolved Stellar Populations We now consider the case when individual stars are not resolved. So we need to use photometric and spectroscopic observations of integrated magnitudes, colors

More information

GALAXY EVOLUTION STUDIES AND HIGH PERFORMANCE COMPUTING

GALAXY EVOLUTION STUDIES AND HIGH PERFORMANCE COMPUTING GALAXY EVOLUTION STUDIES AND HIGH PERFORMANCE COMPUTING Andreas Efstathiou European University Cyprus Astrophysics and HPC group ACTIVE AREAS OF ASTRONOMY OPPORTUNITIES FOR THEORETICAL, OBSERVATIONAL AND

More information

Multi-wavelength ISM diagnostics in high redshift galaxies

Multi-wavelength ISM diagnostics in high redshift galaxies Multi-wavelength ISM diagnostics in high redshift galaxies Alexandra Pope (UMass Amherst) Transformational Science in the ALMA Era: Multi-Wavelength Studies of Galaxy Evolution Conference Charlottesville,

More information

TEMA 3. Host Galaxies & Environment

TEMA 3. Host Galaxies & Environment TEMA 3. Host Galaxies & Environment AGN Dr. Juan Pablo Torres-Papaqui Departamento de Astronomía Universidad de Guanajuato DA-UG (México) papaqui@astro.ugto.mx División de Ciencias Naturales y Exactas,

More information

PoS(10th EVN Symposium)016

PoS(10th EVN Symposium)016 The Circumnuclear Starburst and the Nuclear Region of the LIRG NGC 7469 Instituto de Astrofísica de Andalucía (IAA, CSIC), 18008-Granada, Spain E-mail: antxon@iaa.es Miguel Ángel Pérez-Torres Instituto

More information

Journal Club Presentation on The BIMA Survey of Nearby Galaxies. I. The Radial Distribution of CO Emission in Spiral Galaxies by Regan et al.

Journal Club Presentation on The BIMA Survey of Nearby Galaxies. I. The Radial Distribution of CO Emission in Spiral Galaxies by Regan et al. Journal Club Presentation on The BIMA Survey of Nearby Galaxies. I. The Radial Distribution of CO Emission in Spiral Galaxies by Regan et al. ApJ, 561:218-237, 2001 Nov 1 1 Fun With Acronyms BIMA Berkely

More information

What triggers Kpc scale Radio Outflows in Seyfert Galaxies?

What triggers Kpc scale Radio Outflows in Seyfert Galaxies? What triggers Kpc scale Radio Outflows in Seyfert Galaxies? By Pavana Muralimohan (Indian Institute of Astrophysics), on behalf of The S7 Team [Preeti Kharb (IIA), Michael Dopita (ANU), Prajval Shastri

More information

Extragalactic Astronomy

Extragalactic Astronomy Extragalactic Astronomy Topics: Milky Way Galaxies: types, properties, black holes Active galactic nuclei Clusters and groups of galaxies Cosmology and the expanding universe Formation of structure Galaxies

More information

New Results on the AGN Content of Galaxy Clusters

New Results on the AGN Content of Galaxy Clusters Carnegie Observatories Astrophysics Series, Vol. 3: Clusters of Galaxies: Probes of Cosmological Structure and Galaxy Evolution ed. J. S. Mulchaey, A. Dressler, and A. Oemler (Pasadena; Carnegie Observatories:

More information

Intermediate-age stars as the origin of low stellar velocity dispersion nuclear rings: the case of Mrk 1157

Intermediate-age stars as the origin of low stellar velocity dispersion nuclear rings: the case of Mrk 1157 Mon. Not. R. Astron. Soc. 416, 493 500 (2011) doi:10.1111/j.1365-2966.2011.19061.x Intermediate-age stars as the origin of low stellar velocity dispersion nuclear rings: the case of Mrk 1157 Rogério Riffel,

More information

Cosmological Background Radiation and Extragalactic Gamma-ray Opacity

Cosmological Background Radiation and Extragalactic Gamma-ray Opacity Cosmological Background Radiation and Extragalactic Gamma-ray Opacity Rudy Gilmore SISSA TeV Particle Astrophysics July 21, 2010 Collaborators: Joel Primack - UCSC Rachel Somerville - STScI (Baltimore)

More information

Astronomical Spectroscopy. Michael Cushing

Astronomical Spectroscopy. Michael Cushing Astronomical Spectroscopy Michael Cushing REU Presentation June, 08, 2009 What Is a Spectrum? A stars have Teff ~10 4 K. Continuum H Line Absorption Jacoby et al. (1984, ApJS, 56, 257) What is a Spectrum?

More information

arxiv:astro-ph/ v1 29 Oct 2002

arxiv:astro-ph/ v1 29 Oct 2002 Mon. Not. R. Astron. Soc. 000, 20 (2000) Printed 3 October 203 (MN LATEX style file v.) Stellar population gradients in Seyfert 2 galaxies. Northern sample arxiv:astro-ph/02035v 29 Oct 2002 D. Raimann,

More information

20. Stellar Death. Interior of Old Low-Mass AGB Stars

20. Stellar Death. Interior of Old Low-Mass AGB Stars 20. Stellar Death Low-mass stars undergo three red-giant stages Dredge-ups bring material to the surface Low -mass stars die gently as planetary nebulae Low -mass stars end up as white dwarfs High-mass

More information

Dusty star-forming galaxies at high redshift (part 5)

Dusty star-forming galaxies at high redshift (part 5) Dusty star-forming galaxies at high redshift (part 5) Flow of story 4.1 4.2 4.3 Acquiring Spectroscopic or Photometric Redshifts Infrared SED Fitting for DSFGs Estimating L IR, T dust and M dust from an

More information

SCIENTIFIC CASES FOR RECEIVERS UNDER DEVELOPMENT (OR UNDER EVALUATION)

SCIENTIFIC CASES FOR RECEIVERS UNDER DEVELOPMENT (OR UNDER EVALUATION) SCIENTIFIC CASES FOR RECEIVERS UNDER DEVELOPMENT (OR UNDER EVALUATION) C.STANGHELLINI (INAF-IRA) Part I Infrastructure 1 Main characteristics and status of the Italian radio telescopes 2 Back-ends, opacity

More information

Galaxy formation and evolution. Astro 850

Galaxy formation and evolution. Astro 850 Galaxy formation and evolution Astro 850 Introduction What are galaxies? Systems containing many galaxies, e.g. 10 11 stars in the Milky Way. But galaxies have different properties. Properties of individual

More information

Supernova Explosions. Novae

Supernova Explosions. Novae Supernova Explosions Novae Novae occur in close binary-star systems in which one member is a white dwarf. First, mass is transferred from the normal star to the surface of its white dwarf companion. 1

More information

Astr 2320 Thurs. April 27, 2017 Today s Topics. Chapter 21: Active Galaxies and Quasars

Astr 2320 Thurs. April 27, 2017 Today s Topics. Chapter 21: Active Galaxies and Quasars Astr 2320 Thurs. April 27, 2017 Today s Topics Chapter 21: Active Galaxies and Quasars Emission Mechanisms Synchrotron Radiation Starburst Galaxies Active Galactic Nuclei Seyfert Galaxies BL Lac Galaxies

More information

Gemini: A Visiting DMD-based spectro-imager

Gemini: A Visiting DMD-based spectro-imager BATMAN @ Gemini: A Visiting DMD-based spectro-imager Frederic Zamkotsian, Julien Zoubian, Romain Thomas, Carlo Schimd, Sylvain de la Torre, Eric Jullo, Olivier Ilbert, Samuel Boissier, Georges Comte, Jean-Claude

More information

Chapter 17. Active Galaxies and Supermassive Black Holes

Chapter 17. Active Galaxies and Supermassive Black Holes Chapter 17 Active Galaxies and Supermassive Black Holes Guidepost In the last few chapters, you have explored our own and other galaxies, and you are ready to stretch your scientific imagination and study

More information

arxiv: v1 [astro-ph.co] 31 Mar 2011

arxiv: v1 [astro-ph.co] 31 Mar 2011 **Volume Title** ASP Conference Series, Vol. **Volume Number** **Author** c **Copyright Year** Astronomical Society of the Pacific Why Galaxies Care about AGB Stars. Modelling Galaxies. arxiv:1104.0022v1

More information

Black Holes and Active Galactic Nuclei

Black Holes and Active Galactic Nuclei Black Holes and Active Galactic Nuclei A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently

More information

The Classification of Galaxies

The Classification of Galaxies Admin. 11/9/17 1. Class website http://www.astro.ufl.edu/~jt/teaching/ast1002/ 2. Optional Discussion sections: Tue. ~11.30am (period 5), Bryant 3; Thur. ~12.30pm (end of period 5 and period 6), start

More information

The AGN / host galaxy connection in nearby galaxies.

The AGN / host galaxy connection in nearby galaxies. The AGN / host galaxy connection in nearby galaxies. A new view of the origin of the radio-quiet / radio-loud dichotomy? Alessandro Capetti & Barbara Balmaverde (Observatory of Torino Italy) The radio-quiet

More information

Interpreting Galaxies across Cosmic Time with Binary Population Synthesis Models

Interpreting Galaxies across Cosmic Time with Binary Population Synthesis Models Interpreting Galaxies across Cosmic Time with Binary Population Synthesis Models Elizabeth Stanway Warwick (UK) with J J Eldridge (Auckland, NZ) and others Putting Warwick on the Map WARWICK! London @WarwickAstro

More information

Galaxy Ecosystems Adam Leroy (OSU), Eric Murphy (NRAO/IPAC) on behalf of ngvla Working Group 2

Galaxy Ecosystems Adam Leroy (OSU), Eric Murphy (NRAO/IPAC) on behalf of ngvla Working Group 2 Next Generation Very Large Array Working Group 2 HI in M74: Walter+ 08 CO in M51: Schinnerer+ 13 Continuum in M82: Marvil & Owen Galaxy Ecosystems Adam Leroy (OSU), Eric Murphy (NRAO/IPAC) on behalf of

More information

University of Naples Federico II, Academic Year Istituzioni di Astrofisica, read by prof. Massimo Capaccioli. Lecture 16

University of Naples Federico II, Academic Year Istituzioni di Astrofisica, read by prof. Massimo Capaccioli. Lecture 16 University of Naples Federico II, Academic Year 2011-2012 Istituzioni di Astrofisica, read by prof. Massimo Capaccioli Lecture 16 Stellar populations Walter Baade (1893-1960) Learning outcomes The student

More information

Brazilian Large and Long Programs (BrLLP) Progress Report 2017A. The DIVING3D project: Deep IFS View of Nuclei of Galaxies

Brazilian Large and Long Programs (BrLLP) Progress Report 2017A. The DIVING3D project: Deep IFS View of Nuclei of Galaxies Brazilian Large and Long Programs (BrLLP) Progress Report 2017A The DIVING3D project: Deep IFS View of Nuclei of Galaxies J. E. Steiner 1, R. Cid Fernandes 2, P. Coelho 1, N. Vale Asari 2, R. B. Menezes

More information

Supernovae. Supernova basics Supernova types Light Curves SN Spectra after explosion Supernova Remnants (SNRs) Collisional Ionization

Supernovae. Supernova basics Supernova types Light Curves SN Spectra after explosion Supernova Remnants (SNRs) Collisional Ionization Supernovae Supernova basics Supernova types Light Curves SN Spectra after explosion Supernova Remnants (SNRs) Collisional Ionization 1 Supernova Basics Supernova (SN) explosions in our Galaxy and others

More information

Fermi: Highlights of GeV Gamma-ray Astronomy

Fermi: Highlights of GeV Gamma-ray Astronomy Fermi: Highlights of GeV Gamma-ray Astronomy Dave Thompson NASA GSFC On behalf of the Fermi Gamma-ray Space Telescope Large Area Telescope Collaboration Neutrino Oscillation Workshop Otranto, Lecce, Italy

More information