Surveys & Obs.. IRA [ ]

Transcription

1 Surveys & Obs.. IRA [ ] IRA involved in many survey projects in framework of large international collaborations General Aim: Formation and cosmological evolution of galaxies, AGNs and Universe as a whole (through CMB-related science)

2 IRA Surveys: X-rays ROSAT XMM opt/nir VLT HST NTT CFHT Subaru FIR ISO Spitzer Radio ROSAT X-ray color NEP Gioia image of NEP Region: 442 sources with S kev > VVDS Vettolani, erg/cm 2 /s (deepest exsposure of RASS). Bondi, Gregorini, Zanichelli Voges+, 2001 zcosmos Zanichelli, Vettolani DPS Mignano, Prandoni ELAIS, LH Lari HELLAS2XMM Lari CMB-FG Surveys 5 Deep Fields 4 PI-ship in radio surveys F02 Deep I AB <24 F14 I AB <22. 5 F10 I AB <22.5 F22 I AB <22.5 Redshift distributions in the VVDS fields

3 IRA Surveys: X-rays ROSAT XMM opt/nir VLT HST NTT CFHT Subaru FIR ISO Spitzer Radio ROSAT X-ray color NEP Gioia image of NEP Region: 442 sources with S kev > VVDS Vettolani, erg/cm 2 /s (deepest exsposure of RASS). Bondi, Gregorini, Zanichelli Voges+, 2001 zcosmos Zanichelli, Vettolani DPS Mignano, Prandoni ELAIS, LH Lari HELLAS2XMM Lari CMB-FG Surveys 5 Deep Fields 4 PI-ship in radio surveys F02 Deep F10 I AB <22.5 I AB <24 Lari Method : A Standard to clean transients (CRs,..) from FIR data (ISO, F14 Spitzer) F22 I AB <22. I AB < Redshift distributions in the VVDS fields

4 NORTHERN CROSS SURVEYS Bologna Surveys: 408 MHz B1: Braccesi+,1965 (E-W only) S lim = 1 Jy; Area = 0.41; sr B2: Colla+,1970,72,73, Fanti+,1974 S lim = Jy; Area = 1.7 sr B3: Ficarra+,1985 S lim = 0.1 Jy; Area = 0.78 sr EXTRAGALACTIC SKY SURVEYS down to mjy Complement of brighter Cambridge surveys RFL extended to P<P break (Auriemma et al. 1977)

5 INAF - ISTITUTO DI RADIOASTRONOMIA I. Prandoni Nov I - DEEP RADIO IRA ATCA: 68x12h 6 x 22m bsmax = 6 km + Mosaic technique VLA: 30x12h 27 x 25m bsmax = 30 km GMRT: 30h 30 x 45m bsmax=25 km

6 INAF - ISTITUTO DI RADIOASTRONOMIA I. Prandoni Nov ATESP5: Prandoni et al. 2006, Mignano et al. 2007a,b 5 GHz I - DEEP RADIO IRA Slim = 0.4 mjy; Area = 1 deg2 h VVDS F02 Field: Bondi30x12 et al.h 2007 ATCA: 68x12Deep VLA: 2 Areabs=max1.0 degkm 6 x 22m bsmax = 6Skm 27mJy; x 25m = 30 lim = MHz Lockman Hole: de Ruiter et al GHz Slim = 0.12 mjy; Area = 0.35 deg2 Marano Field: Gruppioni et al Slim = 0.2 mjy; Area = 0.36 deg2 ATESP: Prandoni et al. 2000a,b Slim = 0.47 mjy; Area = 25.9 deg RS VLA-VVDS [F02 Deep Field]: Bondi et al Slim = 0.08 mjy; Area = 1.0 deg RS HDF-South: Huynh et al Slim = 0.06 mjy; Area = 0.35 deg2 + Mosaic technique VLA-COSMOS: Schinnerer et al. 2007, Bondi et al. in prep. GMRT: 30h Slim = 0.05 mjy; Area = 2.0 deg RS 30 x 45m bsmax=25 km

7 INAF - ISTITUTO DI RADIOASTRONOMIA I. Prandoni Nov ATESP5: Prandoni et al. 2006, Mignano et al. 2007a,b 5 GHz I - DEEP RADIO IRA Slim = 0.4 mjy; Area = 1 deg2 h VVDS F02 Field: Bondi30x12 et al.h 2007 ATCA: 68x12Deep VLA: 2 Areabs=max1.0 degkm 6 x 22m bsmax = 6Skm 27mJy; x 25m = 30 lim = MHz Lockman Hole: de Ruiter et al GHz Slim = 0.12 mjy; Area = 0.35 deg2 Marano Field: Gruppioni et al Slim = 0.2 mjy; Area = 0.36 deg2 ATESP: Prandoni et al. 2000a,b Slim = 0.47 mjy; Area = 25.9 deg RS VLA-VVDS [F02 Deep Field]: Bondi et al Slim = 0.08 mjy; Area = 1.0 deg RS HDF-South: Huynh et al Slim = 0.06 mjy; Area = 0.35 deg2 + Mosaic technique VLA-COSMOS: Schinnerer et al. 2007, Bondi et al. in prep. GMRT: 30h Slim = 0.05 mjy; Area = 2.0 deg RS 30 x 45m bsmax=25 km

8 I GHz RADIO COUNTS S<1 mjy IRA, Bo EMERGENCE OF NEW POPULATION(S) Classical RG: ~ S > 60 mjy SF dominates at µjy fluxes ETS important at submjy/mjy fluxes e.g. Richards et al. 99, Gruppioni et al. 99, Haarsma et al. 00, Prandoni et al. 01b, 02, Gruppioni et al. 03, Sullivan et al. 04, Ciliegi et al. 05, Fomalont et al. 06, Prandoni et al. 06, Bondi et al. 07, Mignano et al. 07b IRA Papers Bologna surveys S lim > 100 mjy

9 I - Scientific Drivers SFGs SF History (z>2) (Dust-enshrouded obj) AGNs BH Accretion History low/high accr. rates FRI vs. RQQ RQ/RL dichotomy Ev. Of LLAGNs: LLAGNs peak at lower z? (Type II AGNs) [QSO vs Radio mode] [NB: LDDE recently found for opt/x-ray AGNs] Connection between SFH & MBH accretion LOFAR, evla, emerlin, SKA-Pathfinders, SKA

10 II CMB Foreground Emission IRA [Carretti + IASF,Bo, OAC, ATNF, UCB] Parkes [2500h] Effelsberg [100h] Medicina [1000h] ATCA [100h] Scientific Drivers: CMB polarization Cosmic inflation with next generation CMB space missions (B-POL, Inflation Probe, Planck) - PGMS (2.3 GHz Parkes Galactic Meridian Survey) 5x90 deg 2 polarized Galactic synchr. emission as CMB-FG Galactic Magnetism - S-PASS (S-Band Polarization All Sky Survey) Large Project Parkes): whole Southern Sky - Deep Survey of BOOMERang 43 GHz extragalactic point sources as FGs of CMB polarization (ATCA) 2.3 GHz linear polarized SGP (Carretti+,08)

11 II CMB Foreground Emission IRA - All Northern Sky 20 GHz with Medicina [Carretti + IASF,Bo, OAC, ATNF, UCB] Parkes [2500h] Effelsberg [100h] (S lim ~ 50 mjy) Carretti, Mack, Prandoni, Zanichelli Scientific Drivers: Medicina [1000h] + 2 PhD Students: S. Righini, R. Verma ATCA [100h] CMB polarization Cosmic extragalactic inflation point with sources next as generation FGs of CMB study of flat/inverted spectrum RS CMB space missions (B-POL, Inflation Probe, Planck) (Blazars/HFP) - PGMS (2.3 GHz Parkes Galactic Meridian Survey) 1st Antenna in the North with a 7-horn 20 GHz 5x90 deg 2 polarized Galactic synchr. emission as CMB-FG Multibeam (FOV= 2 2 x7 beams ) Galactic Magnetism It will complement the AT20G [all Southern sky survey to S - S-PASS (S-Band Polarization All Sky Survey) lim ~50 mjy] Large Project Parkes): whole Southern Sky - Followed by deeper 20 GHz survey with SRT-64m - Deep (FOV~50 Survey x 7 of beams) BOOMERang 43 GHz extragalactic point sources as FGs of CMB polarization (ATCA) 2.3 GHz linear polarized SGP (Carretti+,08)

12 III - SURVEYS as DATABASES EXTRACTION OF COMPLETE SAMPLES FOR FOLLOW-UP STATISTICAL STUDIES B3-VLA RGs QZ4 BAL-Quasars Kuhr 18.5 Blazars NEP/VLA Cluster RS [L. Gregorini, K-H Mack, M. Vigotti] [K-H Mack, F. Montenegro-Montes, M. Vigotti] [I. Prandoni] [M. Branchesi, I. Gioia, R. Fanti, C. Fanti] VVDS-WIDE/FIRST mjy radio sources [L. Gregorini, A. Zanichelli] PI-ship

13 III - RLF of Distant X-ray selected Cluster Radio Galaxies Evolution of RLF of cluster galaxies with redshift [both in amplitude and slope] Branchesi et al. 2006, A&A 446, 97 Local clusters by Fanti et al. (1984) and Ledlow & Owen (1996) X NEP clusters (0.3<z<0.8) Local clusters (z<0.1) Instruments used: 1) VLA - 24 hours (1.4 GHz) 2) CFHT - 10 hours

14 Resources [ ] Personnel: IRA-Staff Associates Postdoc PhD M. Bondi, E. Carretti, I. Gioia, C. Lari, K.-H. Mack, P. Parma, I. Prandoni, T. Venturi, G. Vettolani, M. Vigotti, A. Zanichelli L. Gregorini, C. Fanti, R. Fanti (UniBO), H. de Ruiter (OABo) M. Branchesi, A. Mignano F. Montenegro-Montes (Spain), S. Righini, R. Verma (India) - Collaborations: INAF Institutes, Univ. (OABo, OAB, IASF, UniBO,...) + Foreign Inst. & Univ. (ATNF, ESO, MPIA, NRAO,...) - External Funds: Bilateral Agreements (CNR-CSIRO; INAF-IAC) EU Networks (e.g. ESTRELA, Radionet) PRIN (MIUR/INAF, Spain), ASI (SPOrt[<2006]; COFIS-2,...) - Publications (refereed journals): 85 since 2004 (in press not included)

15 Summary IRA involved in many large international survey projects: from X-ray to FIR + several radio surveys (PI-ship): Deep Fields [Radio/FIR/opt/X-ray] CMB-Foreground surveys Aims cosmological statistical studies Formation & Ev. of galaxies, AGNs and Universe as a whole Points of strength: Widely Recognized expertise in (radio) surveys Close collaborations with Italian & foreign Inst. & Univ. High publication rate Critical issues: Insufficient funding for a regular fellowship program