The ASTRODEEP Frontier Fields catalogues: II. Photometric redshifts and rest frame properties in Abell-2744 and MACS-J0416

M. Castellano, R. Amorín, E. Merlin, A. Fontana, R. J. Mclure, E. Mármol-Queraltó, A. Mortlock, S. Parsa, J. S. Dunlop, D. Elbaz, I. Balestra, A. Boucaud, N. Bourne, K. Boutsia, G. Brammer, V. A. Bruce, F. Buitrago, P. Capak, Nico Cappelluti, L. CieslaA. Comastri, F. Cullen, S. Derriere, S. M. Faber, E. Giallongo, A. Grazian, C. Grillo, A. Mercurio, M. J. Michałowski, M. Nonino, D. Paris, L. Pentericci, S. Pilo, P. Rosati, P. Santini, C. Schreiber, X. Shu, T. Wang

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Aims. We present the first public release of photometric redshifts, galaxy rest frame properties and associated magnification values in the cluster and parallel pointings of the first two Frontier Fields, Abell-2744 and MACS-J0416. The released catalogues aim to provide a reference for future investigations of extragalactic populations in these legacy fields: from lensed high-redshift galaxies to cluster members themselves. Methods. We exploit a multiwavelength catalogue, ranging from Hubble Space Telescope (HST) to ground-based K and Spitzer IRAC, which is specifically designed to enable detection and measurement of accurate fluxes in crowded cluster regions. The multiband information is used to derive photometric redshifts and physical properties of sources detected either in the H-band image alone, or from a stack of four WFC3 bands. To minimize systematics, median photometric redshifts are assembled from six different approaches to photo-z estimates. Their reliability is assessed through a comparison with available spectroscopic samples. State-of-the-art lensing models are used to derive magnification values on an object-by-object basis by taking into account sources positions and redshifts. Results. We show that photometric redshifts reach a remarkable ∼3-5% accuracy. After accounting for magnification, the H-band number counts are found to be in agreement at bright magnitudes with number counts from the CANDELS fields, while extending the presently available samples to galaxies that, intrinsically, are as faint as H ∼ 32-33, thanks to strong gravitational lensing. The Frontier Fields allow the galaxy stellar mass distribution to be probed, depending on magnification, at 0.5-1.5 dex lower masses with respect to extragalactic wide fields, including sources at Mstar ∼ 107-108 M at z > 5. Similarly, they allow the detection of objects with intrinsic star formation rates (SFRs) >1 dex lower than in the CANDELS fields reaching 0.1-1 M/yr at z ∼ 6-10.

Original languageEnglish (US)
Article numberA31
JournalAstronomy and Astrophysics
Volume590
DOIs
StatePublished - Jan 1 2016
Externally publishedYes

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magnification
catalogs
galaxies
physical property
star formation rate
stellar mass
mass distribution
Hubble Space Telescope
physical properties
detection
estimates
distribution
comparison
rate
method
state of the art
stack
public

Keywords

  • Catalogs
  • Galaxies: distances and redshifts
  • Galaxies: high-redshift
  • Methods: data analysis

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Castellano, M., Amorín, R., Merlin, E., Fontana, A., Mclure, R. J., Mármol-Queraltó, E., ... Wang, T. (2016). The ASTRODEEP Frontier Fields catalogues: II. Photometric redshifts and rest frame properties in Abell-2744 and MACS-J0416. Astronomy and Astrophysics, 590, [A31]. https://doi.org/10.1051/0004-6361/201527514

The ASTRODEEP Frontier Fields catalogues : II. Photometric redshifts and rest frame properties in Abell-2744 and MACS-J0416. / Castellano, M.; Amorín, R.; Merlin, E.; Fontana, A.; Mclure, R. J.; Mármol-Queraltó, E.; Mortlock, A.; Parsa, S.; Dunlop, J. S.; Elbaz, D.; Balestra, I.; Boucaud, A.; Bourne, N.; Boutsia, K.; Brammer, G.; Bruce, V. A.; Buitrago, F.; Capak, P.; Cappelluti, Nico; Ciesla, L.; Comastri, A.; Cullen, F.; Derriere, S.; Faber, S. M.; Giallongo, E.; Grazian, A.; Grillo, C.; Mercurio, A.; Michałowski, M. J.; Nonino, M.; Paris, D.; Pentericci, L.; Pilo, S.; Rosati, P.; Santini, P.; Schreiber, C.; Shu, X.; Wang, T.

In: Astronomy and Astrophysics, Vol. 590, A31, 01.01.2016.

Research output: Contribution to journalArticle

Castellano, M, Amorín, R, Merlin, E, Fontana, A, Mclure, RJ, Mármol-Queraltó, E, Mortlock, A, Parsa, S, Dunlop, JS, Elbaz, D, Balestra, I, Boucaud, A, Bourne, N, Boutsia, K, Brammer, G, Bruce, VA, Buitrago, F, Capak, P, Cappelluti, N, Ciesla, L, Comastri, A, Cullen, F, Derriere, S, Faber, SM, Giallongo, E, Grazian, A, Grillo, C, Mercurio, A, Michałowski, MJ, Nonino, M, Paris, D, Pentericci, L, Pilo, S, Rosati, P, Santini, P, Schreiber, C, Shu, X & Wang, T 2016, 'The ASTRODEEP Frontier Fields catalogues: II. Photometric redshifts and rest frame properties in Abell-2744 and MACS-J0416', Astronomy and Astrophysics, vol. 590, A31. https://doi.org/10.1051/0004-6361/201527514
Castellano, M. ; Amorín, R. ; Merlin, E. ; Fontana, A. ; Mclure, R. J. ; Mármol-Queraltó, E. ; Mortlock, A. ; Parsa, S. ; Dunlop, J. S. ; Elbaz, D. ; Balestra, I. ; Boucaud, A. ; Bourne, N. ; Boutsia, K. ; Brammer, G. ; Bruce, V. A. ; Buitrago, F. ; Capak, P. ; Cappelluti, Nico ; Ciesla, L. ; Comastri, A. ; Cullen, F. ; Derriere, S. ; Faber, S. M. ; Giallongo, E. ; Grazian, A. ; Grillo, C. ; Mercurio, A. ; Michałowski, M. J. ; Nonino, M. ; Paris, D. ; Pentericci, L. ; Pilo, S. ; Rosati, P. ; Santini, P. ; Schreiber, C. ; Shu, X. ; Wang, T. / The ASTRODEEP Frontier Fields catalogues : II. Photometric redshifts and rest frame properties in Abell-2744 and MACS-J0416. In: Astronomy and Astrophysics. 2016 ; Vol. 590.
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abstract = "Aims. We present the first public release of photometric redshifts, galaxy rest frame properties and associated magnification values in the cluster and parallel pointings of the first two Frontier Fields, Abell-2744 and MACS-J0416. The released catalogues aim to provide a reference for future investigations of extragalactic populations in these legacy fields: from lensed high-redshift galaxies to cluster members themselves. Methods. We exploit a multiwavelength catalogue, ranging from Hubble Space Telescope (HST) to ground-based K and Spitzer IRAC, which is specifically designed to enable detection and measurement of accurate fluxes in crowded cluster regions. The multiband information is used to derive photometric redshifts and physical properties of sources detected either in the H-band image alone, or from a stack of four WFC3 bands. To minimize systematics, median photometric redshifts are assembled from six different approaches to photo-z estimates. Their reliability is assessed through a comparison with available spectroscopic samples. State-of-the-art lensing models are used to derive magnification values on an object-by-object basis by taking into account sources positions and redshifts. Results. We show that photometric redshifts reach a remarkable ∼3-5{\%} accuracy. After accounting for magnification, the H-band number counts are found to be in agreement at bright magnitudes with number counts from the CANDELS fields, while extending the presently available samples to galaxies that, intrinsically, are as faint as H ∼ 32-33, thanks to strong gravitational lensing. The Frontier Fields allow the galaxy stellar mass distribution to be probed, depending on magnification, at 0.5-1.5 dex lower masses with respect to extragalactic wide fields, including sources at Mstar ∼ 107-108 M⊙ at z > 5. Similarly, they allow the detection of objects with intrinsic star formation rates (SFRs) >1 dex lower than in the CANDELS fields reaching 0.1-1 M⊙/yr at z ∼ 6-10.",
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T1 - The ASTRODEEP Frontier Fields catalogues

T2 - II. Photometric redshifts and rest frame properties in Abell-2744 and MACS-J0416

AU - Castellano, M.

AU - Amorín, R.

AU - Merlin, E.

AU - Fontana, A.

AU - Mclure, R. J.

AU - Mármol-Queraltó, E.

AU - Mortlock, A.

AU - Parsa, S.

AU - Dunlop, J. S.

AU - Elbaz, D.

AU - Balestra, I.

AU - Boucaud, A.

AU - Bourne, N.

AU - Boutsia, K.

AU - Brammer, G.

AU - Bruce, V. A.

AU - Buitrago, F.

AU - Capak, P.

AU - Cappelluti, Nico

AU - Ciesla, L.

AU - Comastri, A.

AU - Cullen, F.

AU - Derriere, S.

AU - Faber, S. M.

AU - Giallongo, E.

AU - Grazian, A.

AU - Grillo, C.

AU - Mercurio, A.

AU - Michałowski, M. J.

AU - Nonino, M.

AU - Paris, D.

AU - Pentericci, L.

AU - Pilo, S.

AU - Rosati, P.

AU - Santini, P.

AU - Schreiber, C.

AU - Shu, X.

AU - Wang, T.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Aims. We present the first public release of photometric redshifts, galaxy rest frame properties and associated magnification values in the cluster and parallel pointings of the first two Frontier Fields, Abell-2744 and MACS-J0416. The released catalogues aim to provide a reference for future investigations of extragalactic populations in these legacy fields: from lensed high-redshift galaxies to cluster members themselves. Methods. We exploit a multiwavelength catalogue, ranging from Hubble Space Telescope (HST) to ground-based K and Spitzer IRAC, which is specifically designed to enable detection and measurement of accurate fluxes in crowded cluster regions. The multiband information is used to derive photometric redshifts and physical properties of sources detected either in the H-band image alone, or from a stack of four WFC3 bands. To minimize systematics, median photometric redshifts are assembled from six different approaches to photo-z estimates. Their reliability is assessed through a comparison with available spectroscopic samples. State-of-the-art lensing models are used to derive magnification values on an object-by-object basis by taking into account sources positions and redshifts. Results. We show that photometric redshifts reach a remarkable ∼3-5% accuracy. After accounting for magnification, the H-band number counts are found to be in agreement at bright magnitudes with number counts from the CANDELS fields, while extending the presently available samples to galaxies that, intrinsically, are as faint as H ∼ 32-33, thanks to strong gravitational lensing. The Frontier Fields allow the galaxy stellar mass distribution to be probed, depending on magnification, at 0.5-1.5 dex lower masses with respect to extragalactic wide fields, including sources at Mstar ∼ 107-108 M⊙ at z > 5. Similarly, they allow the detection of objects with intrinsic star formation rates (SFRs) >1 dex lower than in the CANDELS fields reaching 0.1-1 M⊙/yr at z ∼ 6-10.

AB - Aims. We present the first public release of photometric redshifts, galaxy rest frame properties and associated magnification values in the cluster and parallel pointings of the first two Frontier Fields, Abell-2744 and MACS-J0416. The released catalogues aim to provide a reference for future investigations of extragalactic populations in these legacy fields: from lensed high-redshift galaxies to cluster members themselves. Methods. We exploit a multiwavelength catalogue, ranging from Hubble Space Telescope (HST) to ground-based K and Spitzer IRAC, which is specifically designed to enable detection and measurement of accurate fluxes in crowded cluster regions. The multiband information is used to derive photometric redshifts and physical properties of sources detected either in the H-band image alone, or from a stack of four WFC3 bands. To minimize systematics, median photometric redshifts are assembled from six different approaches to photo-z estimates. Their reliability is assessed through a comparison with available spectroscopic samples. State-of-the-art lensing models are used to derive magnification values on an object-by-object basis by taking into account sources positions and redshifts. Results. We show that photometric redshifts reach a remarkable ∼3-5% accuracy. After accounting for magnification, the H-band number counts are found to be in agreement at bright magnitudes with number counts from the CANDELS fields, while extending the presently available samples to galaxies that, intrinsically, are as faint as H ∼ 32-33, thanks to strong gravitational lensing. The Frontier Fields allow the galaxy stellar mass distribution to be probed, depending on magnification, at 0.5-1.5 dex lower masses with respect to extragalactic wide fields, including sources at Mstar ∼ 107-108 M⊙ at z > 5. Similarly, they allow the detection of objects with intrinsic star formation rates (SFRs) >1 dex lower than in the CANDELS fields reaching 0.1-1 M⊙/yr at z ∼ 6-10.

KW - Catalogs

KW - Galaxies: distances and redshifts

KW - Galaxies: high-redshift

KW - Methods: data analysis

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