Abstract
Aims: We present the multiwavelength photometry of two Frontier
Fields massive galaxy clusters, MACS-J0717 and MACS-J1149, and their
parallel fields, ranging from Hubble Space Telescope (HST) to
ground-based K and Spitzer IRAC bands, and the public release of
photometric redshifts and rest-frame properties of galaxies found in
cluster and parallel pointings. This work was carried out within the
ASTRODEEP project and aims to provide a reference for future
investigations of extragalactic populations. Methods: To fully
exploit the depth of the images and detect faint sources, we used an
accurate procedure, which carefully removes the foreground light of
bright cluster sources and the intra-cluster light thus enabling
detection and measurement of accurate fluxes in crowded cluster regions.
This same procedure has been successfully used to derive the photometric
catalogue of MACS-J0416 and Abell-2744. Results: The obtained
multiband photometry was used to derive photometric redshifts,
magnification, and physical properties of sources. In line with the
first two FF catalogues released by ASTRODEEP, the photometric redshifts
reach 4% accuracy. Moreover we extend the presently available samples
to galaxies intrinsically as faint as H160 32-34 mag thanks to the
magnification factors induced by strong gravitational lensing. Our
analysis allows us to probe galaxy masses larger than 107
M⊙ and/or SFR = 0.1-1 M⊙/yr out to
redshift z> 6.
Original language | English |
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Journal | Astronomy & Astrophysics |
Volume | 607 |
Early online date | 31 Oct 2017 |
DOIs | |
Publication status | E-pub ahead of print - 31 Oct 2017 |
Keywords
- galaxies: distances and redshifts
- galaxies: high-redshift
- catalogs