We present the public release of the first complete catalogues of Frontier Fields Abell-2744 and MACSJ-0416 cluster and parallel pointings.
The Abell 2744 field as observed by VLT in the K band and Spitzer in CH1. On the left, the original images; on the right, residuals after T-PHOT processing.
The catalogues include multi-band photometry (8 HST bands, deep Ks from the HAWK-I FF program, and Spitzer-IRAC 3.6 and 4.5 um), magnification, photometric redshifts and rest-frame properties, plus a variety of diagnostic information. The cluster pointings have been analysed following a multi-step procedure to remove foreground emission from intra-cluster light and very bright galaxies. Photometry from low-resolution IR bands has been derived with T-PHOT.
Two papers describing in details the catalogues and the procedures followed to obtain them have been published on Astronomy and Astrophysics:
- Paper I: “The ASTRODEEP Frontier Fields Catalogues: I – Multiwavelength photometry of Abell-2744 and MACS-J0416″, Merlin et al. 2016, 590, 31
- PaperII: “The ASTRODEEP Frontier Fields Catalogues: II – Photometric redshifts and rest-frame properties in Abell-2744 and MACS-J0416”, Castellano et al. 2016
Please quote both of them whenever you use these catalogs.
The full catalogues can be downloaded from this link.
Catalogues, images and diagnostics can also be inspected from a dedicated CDS interface.
A summary of the adopted methods and of the results can be found at this link.
Information on the Frontier Fields Survey can be found on the STScI website.