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Cosmic Evolution Survey (COSMOS)

Cosmic Evolution Survey (COSMOS). HST image 2 deg. 2 ! 590 orbits in Cy 12-13. + VLT-VIMOS, XMM, Subaru, VLA, Spitzer, Galex, …. Data : http://irsa.ipac.caltech.edu/COSMOS/ STScI -- MAST. rational for survey major multi-wavelength components identification of structures

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Cosmic Evolution Survey (COSMOS)

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  1. Cosmic Evolution Survey (COSMOS) HST image 2 deg.2 ! 590 orbits in Cy 12-13 + VLT-VIMOS, XMM, Subaru, VLA, Spitzer, Galex, … Data : http://irsa.ipac.caltech.edu/COSMOS/ STScI -- MAST • rational for survey • major multi-wavelength components • identification of structures • galaxy evolution vs z and environment www.astro.caltech.edu/~cosmos/

  2. Coupled evolution of LSS, galaxies, star formation, AGN w/ Z redshift slice from  CDM sim. 90 Mpc

  3. Cosmos 1.4 deg. 2 million gal. like SDSS at z = 0.5 -- 5

  4. COSMOS -- 38 ==> 80 team members -- US, Japan, Europe and Canada Telescopes : Hubble -- very fine & sensitive optical images XMM -- xray imaging Galex -- ultraviolet imaging Spitzer -- Mid IR w/ IRAC Subaru -- multiple color imaging VeryLargeArray -- radio imaging ESO-VLT & Magellan-- opt. spec. ~ 45,000 gal. NIR -- NOAO, UH88, UKIRT …

  5. Ludovic Van Waerbeke Paolo Vettolani Simon White Lin Yan Min Yun COSMOS -- Richard Griffiths Gigi Guzzo Gunther Hasinger Olivier Ilbert Chris Impey Knud Jahnke Jean-Paul Kneib Karel Nel Jeyhan Kartaltepe Jin Koda Anton Koekemoer Lisa Kewley Alexie Leauthaud Olivier LeFevre Ingo Lehmann Simon Lilly Charles Liu Richard Massey Henry McCracken Yannick Mellier Satoshi Miyazaki Bahram Mobasher Takashi Murayama Colin Norman Alexandre Refregier Alvio Renzini Jason Rhodes Mike Rich Dimitra Rigopoulou Mara Salvato Dave Sanders Shunji Sasaki Dave Schminovich Eva Schinnerer Nick Scoville Marco Scodeggio Kartik Sheth Patrick Shopbell Vernesa Smolcic Jason Surace Yoshi Taniguchi James Taylor Dave Thompson Neil Tyson Meg Urry Ludovic Van Waerbeke Roberto Abraham Masaru Ajiki Justin Alpert Herve Aussel Josh Barnes Andrew Blain Daniela Calzetti Peter Capak John Carlstrom Chris Carilli Andrea Cimatti Andrea Comastri Marcella Corollo Emannuel Daddi Richard Ellis Martin Elvis Amr El Zant Shawn Ewald Mike Fall Alexis Finoguenov Alberto Franceschini Mauro Giavalisco LSS w/ Capak, Finoguenov, Giavalisco, Guzzo, Mobasher, Sanders

  6. Cosmic Evolution Survey • Major features : • large area -- 1.4 x 1.4 deg => cover largest large scale structures • high sensitivity ( I > 28.6 mag AB , 5) => morphology of L* galaxies at z < 2 • sensitivity + area => 2x106 galaxies , unusual objects at higher z • equatorial => multi- observations from all tel.

  7. 17 orbits 10/31/03 1.4 deg

  8. 130 orbits 3/31/04 1.4 deg

  9. Cycle 12 ACS 270 orbits 5/14/04 ACS I-band 1.4 deg 270 orbits as of 6/15

  10. ACS I-band ACS 477 orbits 1/14/05 1.4 deg NICMOS-3 1.6 m -- 24mag ~7% of area

  11. Cycle 12 & 13 ACS 590 orbits 1.4 deg NICMOS-3 1.6 m -- 24mag ~7% of area NICMOS-3 1.6 m -- 24mag ~7% of area

  12. ACS source counts Enormous area and sensitivity ==> large samples of all objects : !!

  13. COSMOS Photo-z catalog (Subaru, CFHT, NOAO) Redshift distribution Redshift uncertainties LSS from galaxy overdensities in redshift slices ==>

  14. overdensity galaxies Test of adaptive smoothing: ~ 50% of gal. w/i structures ~ 50% in field recovered distribution • recovers all significant structures • retains power on all scales • no spurious recoveries • conserves number counts

  15. All SED types (not just early types) redshift slices w/ z = 0.1

  16. ~ 40 major large-scalestructures at z < 1.2 gal w/i each LSS

  17. Prob. of halo mass structures LSS mass :  galaxies w/i each LSS cosmos Photometric/luminous mass (DM halo ~ 10+ times larger)

  18. luminous early-type ==> dense core of LSS

  19. XMM-Newton COSMOS Hasinger etal

  20. X-ray: COSMOS-XMM survey (Hasinger et al.)

  21. Late (spirals and SB) Galaxy type Early (S0 & E) Z higher z ==> later type SED cores of LSS/halos ==> earlier type SED see LSS out to highest z !

  22. Ly Alpha emission @ z=5.7 in the COSMOS narrow band subaru imaging at 8150 Ang. Taniguchi & Ajiki etal 58 emission candidates Survey Volume = 1.5×106 Mpc3 n(LAE) = 3.8×10-5 Mpc-3 Lly alpha > 1042.6 ergs/s

  23. Examples of LAEs @ z=5.7 8”

  24. diffuse diffuse chain? compact

  25. LSS @ z=5.7 probed by LAEs ～200 Mpc COSMOS has gotten to z=5.7 !!!

  26. COSMOS field : 1.4x1.4 deg near equator RA = 10:00:28.6 DEC = +02:12:21 (near but shifted from VVDS 10 hr field) EB-V = 0.02 mag ! and very uniform !! most important : all instruments can see field e.g. VLA, ALMA future TMT/OWL ==> rel. sens. only ~20 - 25% worse than very best fields

  27. COSMOS multi-

  28. Selection of LAEsiz-NB816 vs. NB816 ==> 58 candiates NB816 < 25.1 (5σ) iz – NB816 > 0.7 & 3σ Not detected in B, V, & r’ [B > 27.6 V > 27.1, & r’ > 27.1] 58 objects Survey Volume = 1.5×106 Mpc3 n(LAE) = 3.8×10-5 Mpc-3 Lly alpha > 1042.6 ergs/s

  29. Lookback 8-10 Gyr covers vol ~ SDSS at z ~1

  30. Abell class 2 -4

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