The ASTRODEEP frontier fields catalogues: I. Multiwavelength photometry of Abell-2744 and MACS-J0416

E. Merlin, R. Amorín, M. Castellano, A. Fontana, F. Buitrago, J. S. Dunlop, D. Elbaz, A. Boucaud, N. Bourne, K. Boutsia, G. Brammer, V. A. Bruce, P. Capak, Nico Cappelluti, L. Ciesla, A. Comastri, F. Cullen, S. Derriere, S. M. Faber, H. C. FergusonE. Giallongo, A. Grazian, J. Lotz, M. J. Michałowski, D. Paris, L. Pentericci, S. Pilo, P. Santini, C. Schreiber, X. Shu, T. Wang

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Context. The Frontier Fields survey is a pioneering observational program aimed at collecting photometric data, both from space (Hubble Space Telescope and Spitzer Space Telescope) and from ground-based facilities (VLT Hawk-I), for six deep fields pointing at clusters of galaxies and six nearby deep parallel fields, in a wide range of passbands. The analysis of these data is a natural outcome of the Astrodeep project, an EU collaboration aimed at developing methods and tools for extragalactic photometry and creating valuable public photometric catalogues. Aims. We produce multiwavelength photometric catalogues (from B to 4.5 μm) for the first two of the Frontier Fields, Abell-2744 and MACS-J0416 (plus their parallel fields). Methods. To detect faint sources even in the central regions of the clusters, we develop a robust and repeatable procedure that uses the public codes Galapagos and Galfit to model and remove most of the light contribution from both the brightest cluster members, and the intra-cluster light. We perform the detection on the processed HST H160 image to obtain a pure H-selected sample, which is the primary catalogue that we publish. We also add a sample of sources which are undetected in the H160 image but appear on a stacked infrared image. Photometry on the other HST bands is obtained using SExtractor, again on processed images after the procedure for foreground light removal. Photometry on the Hawk-I and IRAC bands is obtained using our PSF-matching deconfusion code t-phot. A similar procedure, but without the need for the foreground light removal, is adopted for the Parallel fields. Results. The procedure of foreground light subtraction allows for the detection and the photometric measurements of ∼2500 sources per field. We deliver and release complete photometric H-detected catalogues, with the addition of the complementary sample of infrared-detected sources. All objects have multiwavelength coverage including B to H HST bands, plus K-band from Hawk-I, and 3.6-4.5 μm from Spitzer. full and detailed treatment of photometric errors is included. We perform basic sanity checks on the reliability of our results. Conclusions. The multiwavelength photometric catalogues are available publicly and are ready to be used for scientific purposes. Our procedures allows for the detection of outshone objects near the bright galaxies, which, coupled with the magnification effect of the clusters, can reveal extremely faint high redshift sources. Full analysis on photometric redshifts is presented in Paper II.

Original languageEnglish (US)
Article numberA30
JournalAstronomy and Astrophysics
Volume590
DOIs
StatePublished - Jan 1 2016
Externally publishedYes

Fingerprint

catalogs
photometry
galaxies
Space Infrared Telescope Facility
extremely high frequencies
magnification
Hubble Space Telescope
subtraction
field survey
detection
analysis
code
method
removal
public

Keywords

  • Catalogs
  • Galaxies: high-redshift
  • Galaxies: photometry
  • Methods: data analysis

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Merlin, E., Amorín, R., Castellano, M., Fontana, A., Buitrago, F., Dunlop, J. S., ... Wang, T. (2016). The ASTRODEEP frontier fields catalogues: I. Multiwavelength photometry of Abell-2744 and MACS-J0416. Astronomy and Astrophysics, 590, [A30]. https://doi.org/10.1051/0004-6361/201527513

The ASTRODEEP frontier fields catalogues : I. Multiwavelength photometry of Abell-2744 and MACS-J0416. / Merlin, E.; Amorín, R.; Castellano, M.; Fontana, A.; Buitrago, F.; Dunlop, J. S.; Elbaz, D.; Boucaud, A.; Bourne, N.; Boutsia, K.; Brammer, G.; Bruce, V. A.; Capak, P.; Cappelluti, Nico; Ciesla, L.; Comastri, A.; Cullen, F.; Derriere, S.; Faber, S. M.; Ferguson, H. C.; Giallongo, E.; Grazian, A.; Lotz, J.; Michałowski, M. J.; Paris, D.; Pentericci, L.; Pilo, S.; Santini, P.; Schreiber, C.; Shu, X.; Wang, T.

In: Astronomy and Astrophysics, Vol. 590, A30, 01.01.2016.

Research output: Contribution to journalArticle

Merlin, E, Amorín, R, Castellano, M, Fontana, A, Buitrago, F, Dunlop, JS, Elbaz, D, Boucaud, A, Bourne, N, Boutsia, K, Brammer, G, Bruce, VA, Capak, P, Cappelluti, N, Ciesla, L, Comastri, A, Cullen, F, Derriere, S, Faber, SM, Ferguson, HC, Giallongo, E, Grazian, A, Lotz, J, Michałowski, MJ, Paris, D, Pentericci, L, Pilo, S, Santini, P, Schreiber, C, Shu, X & Wang, T 2016, 'The ASTRODEEP frontier fields catalogues: I. Multiwavelength photometry of Abell-2744 and MACS-J0416', Astronomy and Astrophysics, vol. 590, A30. https://doi.org/10.1051/0004-6361/201527513
Merlin, E. ; Amorín, R. ; Castellano, M. ; Fontana, A. ; Buitrago, F. ; Dunlop, J. S. ; Elbaz, D. ; Boucaud, A. ; Bourne, N. ; Boutsia, K. ; Brammer, G. ; Bruce, V. A. ; Capak, P. ; Cappelluti, Nico ; Ciesla, L. ; Comastri, A. ; Cullen, F. ; Derriere, S. ; Faber, S. M. ; Ferguson, H. C. ; Giallongo, E. ; Grazian, A. ; Lotz, J. ; Michałowski, M. J. ; Paris, D. ; Pentericci, L. ; Pilo, S. ; Santini, P. ; Schreiber, C. ; Shu, X. ; Wang, T. / The ASTRODEEP frontier fields catalogues : I. Multiwavelength photometry of Abell-2744 and MACS-J0416. In: Astronomy and Astrophysics. 2016 ; Vol. 590.
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abstract = "Context. The Frontier Fields survey is a pioneering observational program aimed at collecting photometric data, both from space (Hubble Space Telescope and Spitzer Space Telescope) and from ground-based facilities (VLT Hawk-I), for six deep fields pointing at clusters of galaxies and six nearby deep parallel fields, in a wide range of passbands. The analysis of these data is a natural outcome of the Astrodeep project, an EU collaboration aimed at developing methods and tools for extragalactic photometry and creating valuable public photometric catalogues. Aims. We produce multiwavelength photometric catalogues (from B to 4.5 μm) for the first two of the Frontier Fields, Abell-2744 and MACS-J0416 (plus their parallel fields). Methods. To detect faint sources even in the central regions of the clusters, we develop a robust and repeatable procedure that uses the public codes Galapagos and Galfit to model and remove most of the light contribution from both the brightest cluster members, and the intra-cluster light. We perform the detection on the processed HST H160 image to obtain a pure H-selected sample, which is the primary catalogue that we publish. We also add a sample of sources which are undetected in the H160 image but appear on a stacked infrared image. Photometry on the other HST bands is obtained using SExtractor, again on processed images after the procedure for foreground light removal. Photometry on the Hawk-I and IRAC bands is obtained using our PSF-matching deconfusion code t-phot. A similar procedure, but without the need for the foreground light removal, is adopted for the Parallel fields. Results. The procedure of foreground light subtraction allows for the detection and the photometric measurements of ∼2500 sources per field. We deliver and release complete photometric H-detected catalogues, with the addition of the complementary sample of infrared-detected sources. All objects have multiwavelength coverage including B to H HST bands, plus K-band from Hawk-I, and 3.6-4.5 μm from Spitzer. full and detailed treatment of photometric errors is included. We perform basic sanity checks on the reliability of our results. Conclusions. The multiwavelength photometric catalogues are available publicly and are ready to be used for scientific purposes. Our procedures allows for the detection of outshone objects near the bright galaxies, which, coupled with the magnification effect of the clusters, can reveal extremely faint high redshift sources. Full analysis on photometric redshifts is presented in Paper II.",
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author = "E. Merlin and R. Amor{\'i}n and M. Castellano and A. Fontana and F. Buitrago and Dunlop, {J. S.} and D. Elbaz and A. Boucaud and N. Bourne and K. Boutsia and G. Brammer and Bruce, {V. A.} and P. Capak and Nico Cappelluti and L. Ciesla and A. Comastri and F. Cullen and S. Derriere and Faber, {S. M.} and Ferguson, {H. C.} and E. Giallongo and A. Grazian and J. Lotz and Michałowski, {M. J.} and D. Paris and L. Pentericci and S. Pilo and P. Santini and C. Schreiber and X. Shu and T. Wang",
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TY - JOUR

T1 - The ASTRODEEP frontier fields catalogues

T2 - I. Multiwavelength photometry of Abell-2744 and MACS-J0416

AU - Merlin, E.

AU - Amorín, R.

AU - Castellano, M.

AU - Fontana, A.

AU - Buitrago, F.

AU - Dunlop, J. S.

AU - Elbaz, D.

AU - Boucaud, A.

AU - Bourne, N.

AU - Boutsia, K.

AU - Brammer, G.

AU - Bruce, V. A.

AU - Capak, P.

AU - Cappelluti, Nico

AU - Ciesla, L.

AU - Comastri, A.

AU - Cullen, F.

AU - Derriere, S.

AU - Faber, S. M.

AU - Ferguson, H. C.

AU - Giallongo, E.

AU - Grazian, A.

AU - Lotz, J.

AU - Michałowski, M. J.

AU - Paris, D.

AU - Pentericci, L.

AU - Pilo, S.

AU - Santini, P.

AU - Schreiber, C.

AU - Shu, X.

AU - Wang, T.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Context. The Frontier Fields survey is a pioneering observational program aimed at collecting photometric data, both from space (Hubble Space Telescope and Spitzer Space Telescope) and from ground-based facilities (VLT Hawk-I), for six deep fields pointing at clusters of galaxies and six nearby deep parallel fields, in a wide range of passbands. The analysis of these data is a natural outcome of the Astrodeep project, an EU collaboration aimed at developing methods and tools for extragalactic photometry and creating valuable public photometric catalogues. Aims. We produce multiwavelength photometric catalogues (from B to 4.5 μm) for the first two of the Frontier Fields, Abell-2744 and MACS-J0416 (plus their parallel fields). Methods. To detect faint sources even in the central regions of the clusters, we develop a robust and repeatable procedure that uses the public codes Galapagos and Galfit to model and remove most of the light contribution from both the brightest cluster members, and the intra-cluster light. We perform the detection on the processed HST H160 image to obtain a pure H-selected sample, which is the primary catalogue that we publish. We also add a sample of sources which are undetected in the H160 image but appear on a stacked infrared image. Photometry on the other HST bands is obtained using SExtractor, again on processed images after the procedure for foreground light removal. Photometry on the Hawk-I and IRAC bands is obtained using our PSF-matching deconfusion code t-phot. A similar procedure, but without the need for the foreground light removal, is adopted for the Parallel fields. Results. The procedure of foreground light subtraction allows for the detection and the photometric measurements of ∼2500 sources per field. We deliver and release complete photometric H-detected catalogues, with the addition of the complementary sample of infrared-detected sources. All objects have multiwavelength coverage including B to H HST bands, plus K-band from Hawk-I, and 3.6-4.5 μm from Spitzer. full and detailed treatment of photometric errors is included. We perform basic sanity checks on the reliability of our results. Conclusions. The multiwavelength photometric catalogues are available publicly and are ready to be used for scientific purposes. Our procedures allows for the detection of outshone objects near the bright galaxies, which, coupled with the magnification effect of the clusters, can reveal extremely faint high redshift sources. Full analysis on photometric redshifts is presented in Paper II.

AB - Context. The Frontier Fields survey is a pioneering observational program aimed at collecting photometric data, both from space (Hubble Space Telescope and Spitzer Space Telescope) and from ground-based facilities (VLT Hawk-I), for six deep fields pointing at clusters of galaxies and six nearby deep parallel fields, in a wide range of passbands. The analysis of these data is a natural outcome of the Astrodeep project, an EU collaboration aimed at developing methods and tools for extragalactic photometry and creating valuable public photometric catalogues. Aims. We produce multiwavelength photometric catalogues (from B to 4.5 μm) for the first two of the Frontier Fields, Abell-2744 and MACS-J0416 (plus their parallel fields). Methods. To detect faint sources even in the central regions of the clusters, we develop a robust and repeatable procedure that uses the public codes Galapagos and Galfit to model and remove most of the light contribution from both the brightest cluster members, and the intra-cluster light. We perform the detection on the processed HST H160 image to obtain a pure H-selected sample, which is the primary catalogue that we publish. We also add a sample of sources which are undetected in the H160 image but appear on a stacked infrared image. Photometry on the other HST bands is obtained using SExtractor, again on processed images after the procedure for foreground light removal. Photometry on the Hawk-I and IRAC bands is obtained using our PSF-matching deconfusion code t-phot. A similar procedure, but without the need for the foreground light removal, is adopted for the Parallel fields. Results. The procedure of foreground light subtraction allows for the detection and the photometric measurements of ∼2500 sources per field. We deliver and release complete photometric H-detected catalogues, with the addition of the complementary sample of infrared-detected sources. All objects have multiwavelength coverage including B to H HST bands, plus K-band from Hawk-I, and 3.6-4.5 μm from Spitzer. full and detailed treatment of photometric errors is included. We perform basic sanity checks on the reliability of our results. Conclusions. The multiwavelength photometric catalogues are available publicly and are ready to be used for scientific purposes. Our procedures allows for the detection of outshone objects near the bright galaxies, which, coupled with the magnification effect of the clusters, can reveal extremely faint high redshift sources. Full analysis on photometric redshifts is presented in Paper II.

KW - Catalogs

KW - Galaxies: high-redshift

KW - Galaxies: photometry

KW - Methods: data analysis

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