2016/02/02 by I. Baronchelli, C. Scarlata, G. Rodighiero +26 · 10 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #COSMIC cancer database #Cirrus #Ecliptic #Field (mathematics) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Sky #Spire (mollusc) #astro-ph.GA
paper · pdf · doi:10.3847/0067-0049/223/1/1
published in The Astrophysical Journal Supplement Series 223(1), 1 (Institute of Physics)
arxiv created 2016/02/02 · openalex publication_date 2016/03/01 · arxiv updated 2016/03/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
ABSTRACT We present the Spitzer -IRAC/MIPS Extragalactic survey (SIMES) in the South Ecliptic Pole field. The large area covered (7.7 deg 2 ), together with one of the lowest Galactic cirrus emissions in the entire sky and a very extensive coverage by Spitzer, Herschel, Akari, and GALEX , make the SIMES field ideal for extragalactic studies. The elongated geometry of the SIMES area (≈4:1), allowing for significant cosmic variance reduction, further improves the quality of statistical studies in this field. Here we present the reduction and photometric measurements of the Spitzer /IRAC data. The survey reaches depths of 1.93 and 1.75 μ Jy (1 σ ) at 3.6 and 4.5 μ m, respectively. We discuss the multiwavelength IRAC-based catalog, completed with optical, mid-, and far-IR observations. We detect 341,000 sources with . Of these, 10% have an associated 24 μ m counterpart, while 2.7% have an associated SPIRE source. We release the catalog through the NASA/IPAC Infrared Science Archive. Two scientific applications of these IRAC data are presented in this paper. First, we compute integral number counts at 3.6 μ m. Second, we use the [3.6]–[4.5] color index to identify galaxy clusters at z > 1.3. We select 27 clusters in the full area, a result consistent with previous studies at similar depth.