S-COSMOS: The Spitzer legacy survey of the Hubble Space Telescope ACS 2 deg 2 COSMOS field I: Survey strategy and first analysis

D. B. Sanders, M. Salvato, H. Aussel, O. Ilbert, N. Scoville, J. A. Surace, D. T. Frayer, K. Sheth, G. Helou, T. Brooke, B. Bhattacharya, L. Yan, J. S. Kartaltepe, J. E. Barnes, A. W. Blain, D. Calzetti, P. Capak, C. Carilli, C. M. Carollo, A. ComastriE. Daddi, R. S. Ellis, M. Elvis, S. M. Fall, A. Franceschini, M. Giavalisco, G. Hasinger, Christopher D Impey, A. Koekemoer, O. Le Fèvre, S. Lilly, M. C. Liu, H. J. McCracken, B. Mobasher, A. Renzini, M. Rich, E. Schinnerer, P. L. Shopbell, Y. Taniguchi, D. J. Thompson, C. M. Urry, J. P. Williams

Research output: Contribution to journalArticle

383 Citations (Scopus)

Abstract

The COSMOS Spitzer survey (S-COSMOS) is a Legacy program (Cycles 2+3) designed to carry out a uniform deep survey of the full 2 deg 2 COSMOS field in all seven Spitzer bands (3.6,4.5,5.6,8.0,24.0,70.0, and 160.0 μm). This paper describes the survey parameters, mapping strategy, data reduction procedures, achieved sensitivities to date, and the complete data set for future reference. We show that the observed infrared backgrounds in the S-COSMOS field are within 10% of the predicted background levels. The fluctuations in the background at 24 μm have been measured and do not show any significant contribution from cirrus, as expected. In addition, we report on the number of asteroid detections in the low Galactic latitude COSMOS field. We use the Cycle 2 S-COSMOS data to determine preliminary number counts, and compare our results with those from previous Spitzer Legacy surveys (e.g., SWIRE, GOODS). The results from this "first analysis" confirm that the S-COSMOS survey will have sufficient sensitivity with IRAC to detect ∼L* disks and spheroids out to z ≳ 3, and with MIPS to detect ultraluminous starbursts and AGNs out to z ∼ 3 at 24 μm and out to z ∼ 1.5-2 at 70 and 160 μm.

Original languageEnglish (US)
Pages (from-to)86-98
Number of pages13
JournalAstrophysical Journal, Supplement Series
Volume172
Issue number1
DOIs
StatePublished - 2007

Fingerprint

Hubble Space Telescope
asteroid detection
cycles
sensitivity
spheroids
data reduction
cirrus
background level
analysis
COSMOS
asteroid

Keywords

  • Cosmology: observations
  • Galaxies: evolution
  • Galaxies: formation
  • Infrared: galaxies
  • Large-scale structure of universe
  • Surveys

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

S-COSMOS : The Spitzer legacy survey of the Hubble Space Telescope ACS 2 deg 2 COSMOS field I: Survey strategy and first analysis. / Sanders, D. B.; Salvato, M.; Aussel, H.; Ilbert, O.; Scoville, N.; Surace, J. A.; Frayer, D. T.; Sheth, K.; Helou, G.; Brooke, T.; Bhattacharya, B.; Yan, L.; Kartaltepe, J. S.; Barnes, J. E.; Blain, A. W.; Calzetti, D.; Capak, P.; Carilli, C.; Carollo, C. M.; Comastri, A.; Daddi, E.; Ellis, R. S.; Elvis, M.; Fall, S. M.; Franceschini, A.; Giavalisco, M.; Hasinger, G.; Impey, Christopher D; Koekemoer, A.; Le Fèvre, O.; Lilly, S.; Liu, M. C.; McCracken, H. J.; Mobasher, B.; Renzini, A.; Rich, M.; Schinnerer, E.; Shopbell, P. L.; Taniguchi, Y.; Thompson, D. J.; Urry, C. M.; Williams, J. P.

In: Astrophysical Journal, Supplement Series, Vol. 172, No. 1, 2007, p. 86-98.

Research output: Contribution to journalArticle

Sanders, DB, Salvato, M, Aussel, H, Ilbert, O, Scoville, N, Surace, JA, Frayer, DT, Sheth, K, Helou, G, Brooke, T, Bhattacharya, B, Yan, L, Kartaltepe, JS, Barnes, JE, Blain, AW, Calzetti, D, Capak, P, Carilli, C, Carollo, CM, Comastri, A, Daddi, E, Ellis, RS, Elvis, M, Fall, SM, Franceschini, A, Giavalisco, M, Hasinger, G, Impey, CD, Koekemoer, A, Le Fèvre, O, Lilly, S, Liu, MC, McCracken, HJ, Mobasher, B, Renzini, A, Rich, M, Schinnerer, E, Shopbell, PL, Taniguchi, Y, Thompson, DJ, Urry, CM & Williams, JP 2007, 'S-COSMOS: The Spitzer legacy survey of the Hubble Space Telescope ACS 2 deg 2 COSMOS field I: Survey strategy and first analysis', Astrophysical Journal, Supplement Series, vol. 172, no. 1, pp. 86-98. https://doi.org/10.1086/517885
Sanders, D. B. ; Salvato, M. ; Aussel, H. ; Ilbert, O. ; Scoville, N. ; Surace, J. A. ; Frayer, D. T. ; Sheth, K. ; Helou, G. ; Brooke, T. ; Bhattacharya, B. ; Yan, L. ; Kartaltepe, J. S. ; Barnes, J. E. ; Blain, A. W. ; Calzetti, D. ; Capak, P. ; Carilli, C. ; Carollo, C. M. ; Comastri, A. ; Daddi, E. ; Ellis, R. S. ; Elvis, M. ; Fall, S. M. ; Franceschini, A. ; Giavalisco, M. ; Hasinger, G. ; Impey, Christopher D ; Koekemoer, A. ; Le Fèvre, O. ; Lilly, S. ; Liu, M. C. ; McCracken, H. J. ; Mobasher, B. ; Renzini, A. ; Rich, M. ; Schinnerer, E. ; Shopbell, P. L. ; Taniguchi, Y. ; Thompson, D. J. ; Urry, C. M. ; Williams, J. P. / S-COSMOS : The Spitzer legacy survey of the Hubble Space Telescope ACS 2 deg 2 COSMOS field I: Survey strategy and first analysis. In: Astrophysical Journal, Supplement Series. 2007 ; Vol. 172, No. 1. pp. 86-98.
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AU - Sanders, D. B.

AU - Salvato, M.

AU - Aussel, H.

AU - Ilbert, O.

AU - Scoville, N.

AU - Surace, J. A.

AU - Frayer, D. T.

AU - Sheth, K.

AU - Helou, G.

AU - Brooke, T.

AU - Bhattacharya, B.

AU - Yan, L.

AU - Kartaltepe, J. S.

AU - Barnes, J. E.

AU - Blain, A. W.

AU - Calzetti, D.

AU - Capak, P.

AU - Carilli, C.

AU - Carollo, C. M.

AU - Comastri, A.

AU - Daddi, E.

AU - Ellis, R. S.

AU - Elvis, M.

AU - Fall, S. M.

AU - Franceschini, A.

AU - Giavalisco, M.

AU - Hasinger, G.

AU - Impey, Christopher D

AU - Koekemoer, A.

AU - Le Fèvre, O.

AU - Lilly, S.

AU - Liu, M. C.

AU - McCracken, H. J.

AU - Mobasher, B.

AU - Renzini, A.

AU - Rich, M.

AU - Schinnerer, E.

AU - Shopbell, P. L.

AU - Taniguchi, Y.

AU - Thompson, D. J.

AU - Urry, C. M.

AU - Williams, J. P.

PY - 2007

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N2 - The COSMOS Spitzer survey (S-COSMOS) is a Legacy program (Cycles 2+3) designed to carry out a uniform deep survey of the full 2 deg 2 COSMOS field in all seven Spitzer bands (3.6,4.5,5.6,8.0,24.0,70.0, and 160.0 μm). This paper describes the survey parameters, mapping strategy, data reduction procedures, achieved sensitivities to date, and the complete data set for future reference. We show that the observed infrared backgrounds in the S-COSMOS field are within 10% of the predicted background levels. The fluctuations in the background at 24 μm have been measured and do not show any significant contribution from cirrus, as expected. In addition, we report on the number of asteroid detections in the low Galactic latitude COSMOS field. We use the Cycle 2 S-COSMOS data to determine preliminary number counts, and compare our results with those from previous Spitzer Legacy surveys (e.g., SWIRE, GOODS). The results from this "first analysis" confirm that the S-COSMOS survey will have sufficient sensitivity with IRAC to detect ∼L* disks and spheroids out to z ≳ 3, and with MIPS to detect ultraluminous starbursts and AGNs out to z ∼ 3 at 24 μm and out to z ∼ 1.5-2 at 70 and 160 μm.

AB - The COSMOS Spitzer survey (S-COSMOS) is a Legacy program (Cycles 2+3) designed to carry out a uniform deep survey of the full 2 deg 2 COSMOS field in all seven Spitzer bands (3.6,4.5,5.6,8.0,24.0,70.0, and 160.0 μm). This paper describes the survey parameters, mapping strategy, data reduction procedures, achieved sensitivities to date, and the complete data set for future reference. We show that the observed infrared backgrounds in the S-COSMOS field are within 10% of the predicted background levels. The fluctuations in the background at 24 μm have been measured and do not show any significant contribution from cirrus, as expected. In addition, we report on the number of asteroid detections in the low Galactic latitude COSMOS field. We use the Cycle 2 S-COSMOS data to determine preliminary number counts, and compare our results with those from previous Spitzer Legacy surveys (e.g., SWIRE, GOODS). The results from this "first analysis" confirm that the S-COSMOS survey will have sufficient sensitivity with IRAC to detect ∼L* disks and spheroids out to z ≳ 3, and with MIPS to detect ultraluminous starbursts and AGNs out to z ∼ 3 at 24 μm and out to z ∼ 1.5-2 at 70 and 160 μm.

KW - Cosmology: observations

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Infrared: galaxies

KW - Large-scale structure of universe

KW - Surveys

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