The ASTRODEEP Frontier Fields Catalogues III. Multiwavelength photometry and rest frame properties of MACS-J0717 and MACS-J1149
2017
We present the multiwavelength photometry of two Frontier Fields massive
galaxy clustersMACS-J0717 and MACS-J1149 and their parallel fields, ranging from HST to ground based K and Spitzer IRAC bands, and the public release of
photometric redshiftsand
rest frameproperties of galaxies found in cluster and parallel pointings. This work was done within ASTRODEEP project and aims to provide a reference for future investigations of the extragalactic populations. To fully exploit the depth of the images and detect
faintsources 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. The obtained multi-band photometry was used to derive
photometric redshifts,
magnificationand physical properties of sources. In line with the first two FF catalogues released by ASTRODEEP, the
photometric redshiftsreach $\sim$4$\%$ accuracy. Moreover we extend the presently available samples to galaxies intrinsically as
faintas H160$\sim$32-34 mag thanks the
magnificationfactors induced to
strong gravitational lensing. Our analysis allows us to probe galaxy masses larger then 10$^{7}$ M$\odot$ and/or SFR=0.1-1M$\odot$/yr out to
redshiftz$>6$.
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