| Autor: |
Baronchelli, I., Scarlata, C., Rodighiero, G., Franceschini, A., Capak, P. L., Mei, S., Vaccari, M., Marchetti, L., Hibon, P., Sedgwick, C., Pearson, C., Serjeant, S., Menèndez-Delmestre, K., Salvato, M., Malkan, M., Teplitz, H. I., Hayes, M., Colbert, J., Papovich, C., Devlin, M., Kovacs, A., Scott, K. S., Surace, J., Kirkpatrick, J. D., Atek, H., Urrutia, T., Scoville, N. Z., Takeuchi, T. T. |
| Rok vydání: |
2016 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.3847/0067-0049/223/1/1 |
| Popis: |
We present the Spitzer-IRAC/MIPS Extragalactic survey (SIMES) in the South Ecliptic Pole (SEP) 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 ($\approx$4:1), allowing for a 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 a depth of 1.93 and 1.75 $\mu$Jy (1$\sigma$) at 3.6 and 4.5 $\mu$m, respectively. We discuss the multiwavelength IRAC--based catalog, completed with optical, mid-- and far--IR observations. We detect 341,000 sources with F$_{3.6\mu m} \geq 3\sigma$. Of these, 10% have an associated 24 $\mu$m counterpart, while 2.7% have an associated SPIRE source. We release the catalog through the NASA/IPAC Infrared Science Archive (IRSA). Two scientific applications of these IRAC data are presented in this paper: first we compute integral number counts at 3.6 $\mu$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. |
| Databáze: |
arXiv |
| Externí odkaz: |
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