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1 ADELA PRODUCTS: 2016 Bogotá, Colombia Movies
2 The VVV Survey Extension: RRLyrae, Cepheids and more Dante Minniti
3 The VVV Science Team Dante Minniti
4 VVV Latest Results 1. RR Lyrae in the Bulge-Halo Transition Region 2. Cepheids in the Inner Bulge 3. Galactic Disk RR Lyrae 4. RR Lyrae in the Galactic Center 5. Structure of the Milky Way Bulge 6. Dust Distribution and the Reddening Laws 7. Catalog of Proper Motions and Parallaxes 8. Hundreds of New Star Clusters 9. Template Light Curves 10.The Mass of the Milky Way Bulge The VVV Extended Survey
5 VISTA PUBLIC SURVEYS VISTA VARIABLES IN THE VIA LACTEA 560 sq.deg. ~10 9 stars ~100 epochs ~10 7 variables
6 VISTA Telescope 4m diameter IR optimized large field vvvsurvey.org
7 The photo album of the MW is not complete yet!!! vvvsurvey.org? 2MASS IMAGE OF THE MILKY WAY
8 VVV Goal What is the 3-D structure of the Milky Way
9 DEEPER AND HIGHER RESOLUTION Main differences with 2MASS 2MASS covers the whole sky, VVV only 1.3% VVV has higher resolution (0.34 /pix) VVV is deeper (Ks<18) VVV has 5 filters (ZYJHKs) All in all the VVV survey is 2x bigger than 2MASS VVV is a multiepoch survey (~100 epochs)
10 2MASS
11 VVV1
12 VVV30
13 VVVX vvvsurvey.org R.Hurt/JPL/NASA
14 Sgr MS Disk MS saturation Bulge RGC VVV STARS Bulge RGB CMD Sgr RGC K+M dw outer bulge fields b209-b211 Bulge MSTO photometric limit
15 vvvsurvey.org VVV CMDs Color-magnitude diagrams of bulge and disk fields compared with 2MASS. baade d001 Oscar Gonzalez
16 20 deg 15 deg BIG DATA 140 Gb single Megapix image of ~300 sqdeg, made of ~ images of 512x512pix each, scale 1pix = 0.4, JHKs filters, by Ignacio Toledo
17 BIG DATA Problems for: handling, bookkeeping, etc. ADELA Bogotá, Colombia, Bogotá, 30 September Colombia, September 2016 Dante Dante Minniti Minniti (UNAB/MAS/CATA)
18 limiting magnitudes vvvsurvey.org Ks R. Saito Completeness tests M. Hempel, E. Valenti
19 VISTA filter transmissions and Main Emission Lines HeII SII 9069 PaB Z Y J H Ks PaG Br10 HeII BrG HeI SII lambda (microns)
20 VVV Star Clusters
21 NEW SCIENCE ~100 papers Many discoveries
22 Hundreds of New Star clusters Borissova et al A&A (arxiv: ) Barba et al A&A (arxiv: ) Discovery of >700 star clusters. Make CMDs and measure their proper motions, sizes and reddenings. Estimate their ages, masses, and distances. Spectroscopic follow-up: measure their chemical compositions and VRs. Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
23
24 Open Clusters P. Zwarts, ARAA 2013 plot from Zwart 2010 ARAA Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
25 A Very Massive Star Candidate A. Chené et al. (2015)
26 A Very Massive Star Candidate A. Chené et al. (2015)
27 J. Borissova, S. Ramirez, A. Chene, R. Kurtev, R. Barba, T. Palma et al.
28 ORANGE: Optical (841) YELLOW: GLIMPSE (622) CIAN: 2MASS (427) RED: VVV (746)
29 VVV Variables
30 Timeline multicolor maps variability variability variability variability proper motions
31 Number of Epochs: MW Bulge Maren Hempel Tile ID N Obs.
32 Mira LPV
33 RV Tau
34 Cepheid type I
35 Cepheid type II
36 RR Lyrae type ab
37 RR Lyrae RRc
38 WUMa with RR Lyrae period/amplitude
39 EB
40 Microlensing event
41 VVV NOVA Hunters
42 VVV NOVA Hunters Catalog of 138 Known Galactic Novae Roberto Saito et al. A&A, 2013 Spatial distribution of known Galactic novae in the VVV area. They avoid the Galactic plane, where the extinction is highest. We are discovering novae in the most obscured regions of the Milky Way. N(VVVNovae) = 20 so far!
43 Template Light Curves Database Angeloni et al. 2014, A&A 567, 100 (arxiv: ) The VVV Templates Project Towards an Automated Classification of VVV Light-Curves: Building a database of stellar variability in the near-infrared. Our database contains near-ir light-curves for: RR Lyrae Cepheids Eclipsing Binaries Delta Scutis Cataclysmic Variables etc. vvvsurvey.org RR ab
44 VVV Cepheids
45 VVV : complementary with GAIA Rix & Bovy 2014
46 CEPHEIDS IN THE GALACTIC DISK I. Dekany et al. ApJL 2015
47 Cepheids in the Inner Bulge Dekany et al ApJL (arxiv: ) Main problem: To separate classical Cepheids from Type II Cepheids (WVir) The near-ir light curves are not enough, it is very tricky to discriminate among both possibilities using only the near-ir light curves Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
48 Cepheids in the Inner Bulge Dekany et al ApJL (arxiv: ) Found a population of Classical Cepheids in the Galactic mid-plane, well within the bulge (35 Cepheids). They trace a young and thin stellar disk all the way to the Galactic center. Their period (age) spread indicate a continuous supply of newly formed stars over the past ~100 Myrs. Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
49 BIG DATA Problems for: analysing, visualising etc. CEPHEIDS IN THE GALACTIC DISK I. Dekany et al. ApJL 2015 BIG DATA
50 CEPHEIDS IN THE GALACTIC DISK I. Dekany et al. ApJL 2015
51 CEPHEIDS IN THE GALACTIC DISK AN INVISIBLE MASSIVE OPEN CLUSTER HIDDEN BEHIND Av~32 I. Dekany et al. ApJL 2015
52 VVV RRLyrae
53 Variable stars in the VVV globular clusters. I. 2MASS-GC02 and Terzan 10 J. Alonso-Garcia et al. (AJ 2014) RR Lyrae in GCs
54 Extremely Reddened Globular Clusters 2MASS-GC02 Distance 4.9 kpc 7.1 kpc
55 Variable stars in the VVV globular clusters. 2MASS-GC02 J. Alonso-Garcia et al. (AJ 2014) cluster field
56 Bulge RR Lyrae F. Gran, et al. 2014, A&A
57 Bulge RR Lyrae F. Gran, et al. 2014, A&A Tile d201 We find ~1 RR Lyrae variable star for every 10,000 stars measured. Clump giants represent about 10% of the stars we measure in the bulge, while RR Lyrae represent 0.01% of the stars measured.
58 Bulge RR Lyrae F. Gran, et al. A&A, 2016 RR Lyrae are metalpoor, and represent an old and metal-poor stellar population. RR Lyrae stars are excellent distance indicators.
59 Bulge RR Lyrae F. Gran, et al. 2016, A&A
60
61 Bulge RR Lyrae Ks-band Variability The VVV distance distribution of known bulge RR Lyrae is different from the clump giants! Istvan Dekany, et al. 2013, ApJL Felipe Gran et al A&A although see Pietrukowicz et al Acta Astronomica
62 Galactic Center RRLyrae D. Minniti, R. Contreras, et al. (2016, ApJ Letters)
63 VVV Image of the Galactic center X
64 Galactic Center RR Lyrae CMD of 1 chip E We found 10 RRLyrae out of 10^7 stars in the GC region
65 Galactic Center RR Lyrae Ks ID: 37068, P = ID: 55278, P = ID: 55144, P = Phase Phase Phase Typical light curves - clear discrimination from contact binaries - somewhat noisier than typical VVV bulge RR Lyrae - period distribution indicates an Oosterhoff type I population
66 Credit: ESO E bulge RR Lyrae red clump 4th VVV Science Meeting Viña del Mar, Chile, March 23, 2013 I. Dékány, P. Universidad Católica de Chile
67 VVV RRLyrae in the Galactic center
68 Galactic Disk RRLyrae
69 Distant objects 10 kpc 20 kpc 30 kpc 40 kpc
70 Disk RR Lyrae
71 Bulge and Disk RR Lyrae E D D = 8 kpc
72 Disk RR Lyrae CMD DISTANCES: using P-L of Muraveva et al mean colors of Galactic RRLyr that are unreddened (Eb-v~0.015) the intrinsic V-K color for RRab is Mv-Mk=1.006 Mk=Ks-Ak=Ks-0.528Ej-k for Nishiyama Mk=Ks-Ak=Ks-0.72Ej-k for Cardelli To estimate visual mags we use Mv=Ks-0.528(J-Ks-0.15)+1.0 where (J-Ks)o = 0.15 is assumed to be the color of an unreddened RRLyr GAIA spectroscopy GAIA astrometry ROW 1 ROW 4 Many RRLyrae have V<20 and are accessible to Gaia
73 VVV Proper Motions Please see Rudy Kurtev s poster downstairs
74 Catalog of Proper Motions and Parallaxes Kurtev et al (MNRAS) Gromadzki et al (ActA) ~3000 new high PM objects with Ks < 13.5 and PM > 200 mas/yr Proxima Centauri
75 Catalog of Proper Motions and Parallaxes Kurtev et al (MNRAS) Gromadzki et al (ActA) ~200 objects with good parallaxes
76 VVV Proper Motions Search for Brown Dwarfs R. Kurtev, P. Lucas, M. Gromadzki, J. C. Beamin, V. Ivanov, et al.
77 Search for Brown Dwarfs a peculiar new solar neighbour showing parallactic motion VVV-BD-01 D=18 pc J. C. Beamin, et al. (2014, A&A Letters) Please see Juan Carlos Beamin s poster downstairs
78 Search for Companions b387 V. Ivanov et al. 2015
79 The Alpha Cen System alpha beta proxima Separation = 2.2 deg = AU = 0.06 pc N E
80 Deep and Wide VVV Search ~20 sqdeg, Kslim~ deg N E
81 Proxima Cen The nearest star distance = 4.24 ly discovery: 1915 Proxima Cen b: a rocky planet in the HZ discovery: 2016
82 Proxima Centauri Ks-band images Klim=17.5
83 L s are brighter in Ks T s are brighter in J Y s are faint Known BDs Dupuy & Liu 2012 ApJ
84 L s are brighter in Ks T s are brighter in J Y s are faint Known BDs Dupuy & Liu 2012 ApJ
85 Ks Difficult to visualize large amounts of data Movies by Joyce Pullen The VVV Giga Bulge CMD DoPhot PSF photometry of the bulge J. Alonso, et al. 2016, in preparation J K s In Z, 667 million sources In Y, 707 million sources In J, 922 million sources In H, 990 million sources In Ks, 779 million sources
86
87 Structure of the Milky Way Bulge Gonzalez et al. 2015, A&A (arxiv ) Valenti et al. 2013, A&A, 559, 98 (arxiv: ) Dekany et al. 2013, ApJL, 776, L19 (arxiv: ) Vazquez et al. 2013, A&A, 555A, 91V (arxiv: ) Saito et al. 2013, A&A, 545, 147, 201 (arxiv: ) Gonzalez et al A&A, 552, 110 (arxiv: ) Gonzalez et al A&A, 543, 13 (arxiv: ) The global photometric reddening and metallicity maps of the MW bulge
88 Structure of the Milky Way Bulge Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
89 Dust Distribution and the Reddening Laws Gonzalez et al. 2012, A&A, 543, 13 (arxiv: ) The first global photometric metallicity map of the Galactic bulge Gonzalez et al. 2013, A&A, 552A, 110G (arxiv: ) Chen et al. 2013, A&A, 550, 42 (arxiv: ) Schultheis et al. 2014, A&A 566, 120 (arxiv: ) Mapping the Milky Way Bulge at high resolution: the 3D dust extinction, CO and X factor maps Minniti et al. 2015, A&A, 571, A91 (arxiv: ) Nataf et al ApJ in press (arxiv: ) Interstellar Extinction Curve Variations Toward the Inner Milky Way Mean red clump color difference (Z Ks) = 0.55 mag, equivalent to AV = 2.0 mag E
90 MW edge on vvvsurvey.org RR LYRAE d [kpc] Sol Av~2 2MASS IMAGE OF THE MILKY WAY Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
91 The Mass of the Galactic Bulge
92 The Mass of the Milky Way Bulge Valenti et al. 2016, A&A (arxiv: ) The mass of stars and remnants within
93 Discoveries MW Bulge Structure Globular Clusters Open Clusters (incl. WR clusters) Variable stars in clusters Galactic Novae and other transients Nearby Brown Dwarfs Companions to Nearby Stars Galaxies in the Avoidance Zone IR Counterparts of High Energy Sources Candidate microlensing events Candidate extrasolar planetary transits
94 Workshops Public talks School teachers Student involvement Presence in the social media (facebook, twitter, etc) Press releases Videos Scientific movies Posters, handouts Books MANY OTHER DIFFERENT ACTIVITIES AND BEYOND ASTRONOMY and ART Paintings Music
95 vvvsurvey.org
96 archive.eso.org Data Releases VVV DR4 Specola ADELA Vaticana 14 September Bogotá, Colombia, September 2016 Dante Minniti (UNAB/MAS/CATA) Dante Minniti (UNAB/MAS/CATA)
97
98 vvvsurvey.org VVV X
99 VVV X ~2000 hs ~50% of the MW
100 VVV X The VVV Extended Survey CENTAURUS BIG DATA
101 VVV X Total Area = 1720 sqdeg Total Time ~ 2000 hs 4.5 deg 6 epochs 25 epochs 9 deg 40 epochs 4.5 deg 10 deg 4.5 deg 75 deg 65deg 180 sqdeg = 126 tiles - 6 Ks epochs + JJJJJHHHKs 1148 sqdeg = 722 tiles - 25 Ks epochs + JJJJJHHHKs 292 sqdeg = 180 tiles - 40 Ks epochs + JJJJJHHHKs
102 Science VVV X Galactic structure stellar populations star formation star clusters variable stars microlensing exoplanets-bds proper motions bulge-halo connection disk-bulge connection spiral arms warp, flare
103 VVV X A new near infrared survey of the inner regions of the Milky Way Credito: Joyce Pullen
104 The VVV X Survey: A New Exploration of the Milky Way discovering our own galaxy, fostering international collaborations, promoting Astrophysics at every level, & securing resources for the future generations. Sexten Center for Astrophysics, Italy 26 January 2016 Dante Minniti (UNAB/MAS/CATA)
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