CANDELS Multi-wavelength Catalogs: Source Detection and Photometry in the GOODS-South Field

Y. Guo, H. C. Ferguson, M. Giavalisco, G. Barro, S. P. Willner, M. L. N. Ashby, T. Dahlen, J. L. Donley, S. M. Faber, A. Fontana, A. Galametz, A. Grazian, K.-H. Huang, D. D. Kocevski, A. M. Koekemoer, D. C. Koo, E. J. McGrath, M. Peth, M. Salvato, S. WuytsM. Castellano, A. R. Cooray, M. E. Dickinson, J. S. Dunlop, G. G. Fazio, J. P. Gardner, E. Gawiser, N. A. Grogin, N. P. Hathi, L.-T. Hsu, K.-S. Lee, R. A. Lucas, B. Mobasher, K. Nandra, J. A. Newman, A. van der Wel

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384 Citations (SciVal)


We present a UV to mid-infrared multi-wavelength catalog in the CANDELS/GOODS-S field, combining the newly obtained CANDELS HST/WFC3 F105W, F125W, and F160W data with existing public data. The catalog is based on source detection in the WFC3 F160W band. The F160W mosaic includes the data from CANDELS deep and wide observations as well as previous ERS and HUDF09 programs. The mosaic reaches a 5σ limiting depth (within an aperture of radius 0farcs17) of 27.4, 28.2, and 29.7 AB for CANDELS wide, deep, and HUDF regions, respectively. The catalog contains 34,930 sources with the representative 50% completeness reaching 25.9, 26.6, and 28.1 AB in the F160W band for the three regions. In addition to WFC3 bands, the catalog also includes data from UV (U band from both CTIO/MOSAIC and VLT/VIMOS), optical (HST/ACS F435W, F606W, F775W, F814W, and F850LP), and infrared (HST/WFC3 F098M, VLT/ISAAC Ks, VLT/HAWK-I Ks, and Spitzer/IRAC 3.6, 4.5, 5.8, 8.0 μm) observations. The catalog is validated via stellar colors, comparison with other published catalogs, zero-point offsets determined from the best-fit templates of the spectral energy distribution of spectroscopically observed objects, and the accuracy of photometric redshifts. The catalog is able to detect unreddened star-forming (passive) galaxies with stellar mass of 1010 M ☉ at a 50% completeness level to z ~ 3.4 (2.8), 4.6 (3.2), and 7.0 (4.2) in the three regions. As an example of application, the catalog is used to select both star-forming and passive galaxies at z ~ 2-4 via the Balmer break. It is also used to study the color-magnitude diagram of galaxies at 0 < z < 4.
Original languageEnglish
Pages (from-to)24
Number of pages1
JournalAstrophysical Journal Supplement
Issue number2
Early online date18 Jul 2013
Publication statusPublished - 1 Aug 2013


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