CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field

TL;DR

This paper introduces a comprehensive multi-wavelength photometric catalog for the COSMOS field, combining data from multiple telescopes and bands, and providing physical properties of sources through spectral energy distribution fitting.

Contribution

It presents a new, extensive multi-wavelength catalog with source detection in F160W and detailed physical property estimation, integrating data from HST, CFHT, Subaru, VISTA, and Spitzer.

Findings

Catalog contains 38,671 sources with 42-band photometry.

Source detection was performed in the WFC3 F160W band.

Physical properties were derived from spectral energy distribution fitting.

Abstract

We present a multi-wavelength photometric catalog in the COSMOS field as part of the observations by the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS). The catalog is based on Hubble Space Telescope Wide Field Camera 3 (HST/WFC3) and Advanced Camera for Surveys (ACS) observations of the COSMOS field (centered at RA: $10^h00^m28^s$, Dec:$+02^{\circ}12^{\prime}21^{\prime\prime}$). The final catalog has 38671 sources with photometric data in forty two bands from UV to the infrared ($\rm \sim 0.3-8\,\mu m$). This includes broad-band photometry from the HST, CFHT, Subaru, VISTA and Spitzer Space Telescope in the visible, near infrared and infrared bands along with intermediate and narrow-band photometry from Subaru and medium band data from Mayall NEWFIRM. Source detection was conducted in the WFC3 F160W band (at $\rm 1.6\,\mu m$) and photometry is generated using the Template FITting algorithm. We further present a catalog of the physical properties of sources as identified in the HST F160W band and measured from the multi-band photometry by fitting the observed spectral energy distributions of sources against templates.