I. Baronchelli, C. Scarlata, G. Rodighiero, A. Franceschini, P. L. Capak, S. Mei, M. Vaccari, L. Marchetti, P. Hibon, C. Sedgwick, C. Pearson, S. Serjeant, K. Menéndez-Delmestre, M. Salvato, M. Malkan, H. I. Teplitz, M. Hayes, J. Colbert, C. Papovich, M. DevlinA. Kovacs, K. S. Scott, J. Surace, J. D. Kirkpatrick, H. Atek, T. Urrutia, N. Z. Scoville, T. T. Takeuchi

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We present the Spitzer-IRAC/MIPS Extragalactic survey (SIMES) in the South Ecliptic Pole field. The large area covered (7.7 deg2), 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 μJy (1σ) at 3.6 and 4.5 μm, 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 μm 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 μm. 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.

Original languageEnglish (US)
Article number1
JournalAstrophysical Journal, Supplement Series
Issue number1
StatePublished - Mar 2016

Bibliographical note

Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved..


  • catalogs
  • galaxies: evolution
  • infrared: galaxies
  • submillimeter: galaxies
  • surveys


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