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Young Galaxy Candidates in the Hubble Frontier Fields - III. MACSJ0717.5+3745

Laporte, N. and Infante, L. and Troncoso Iribarren, P. and Zheng, W. and Molino, A. and Bauer, F. E. and Bina, D. and Broadhurst, Tom and Chilingarian, I. and Garcia, S. and Kim, S. and Marques-Chaves, R. and Moustakas, J. and Pellò, R. and Pérez-Fournon, I. and Shu, X. and Streblyanska, A. and Zitrin, A. (2016) Young Galaxy Candidates in the Hubble Frontier Fields - III. MACSJ0717.5+3745. Astrophysical Journal, 820 (2). Art. No. 98. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20160510-090337363

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Abstract

In this paper we present the results of our search for and study of z ≳ 6 galaxy candidates behind the third Frontier Fields (FFs) cluster, MACS J0717.5+3745, and its parallel field, combining data from Hubble and Spitzer. We select 39 candidates using the Lyman break technique, for which the clear non-detection in optical make the extreme mid-z interlopers hypothesis unlikely. We also take benefit from z ≳ 6 samples selected using the previous FF data sets of Abell 2744 and MACS 0416 to improve the constraints on the properties of very high redshift objects. We compute the redshift and the physical properties such emission lines properties, star formation rate, reddening, and stellar mass for all FF objects from their spectral energy distribution using templates including nebular emission lines. We study the relationship between several physical properties and confirm the trend already observed in previous surveys for evolution of star formation rate with galaxy mass and between the size and the UV luminosity of our candidates. The analysis of the evolution of the UV luminosity function with redshift seems more compatible with an evolution of density. Moreover, no robust z ⩾ 8.5 object is selected behind the cluster field and few z ~ 9 candidates have been selected in the two previous data sets from this legacy survey, suggesting a strong evolution in the number density of galaxies between z ~ 8 and 9. Thanks to the use of the lensing cluster, we study the evolution of the star formation rate density produced by galaxies with L > 0.03 L^*, and confirm the strong decrease observed between z ~ 8 and 9.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.3847/0004-637X/820/2/98DOIArticle
http://iopscience.iop.org/article/10.3847/0004-637X/820/2/98/meta#PublisherArticle
https://arxiv.org/abs/1602.02775arXivDiscussion Paper
ORCID:
AuthorORCID
Troncoso Iribarren, P.0000-0001-6162-3023
Bauer, F. E.0000-0002-8686-8737
Zitrin, A.0000-0002-0350-4488
Additional Information:© 2016 The American Astronomical Society. Received 2015 November 16; accepted 2016 February 7; published 2016 March 24. The authors thank the anonymous referee for the useful comments that strongly improved the quality of the paper. We acknowledge support from CONICYT-Chile grants Basal-CATA PFB-06/2007 (NL, LI, FEB, and SK), Gemini-CONICYT #32120003 (NL), "EMBIGGEN" Anillo ACT1101 (FEB), FONDECYT 1141218 (FEB), FONDECYT Postdoctorado 3160122 (NL), 3140542 (PT) and Project IC120009 "Millennium Institute of Astrophysics (MAS)" of the Iniciativa Científica Milenio del Ministerio de Economía, Fomento y Turismo (FEB), and the French Agence Nationale de la Recherche bearing the reference ANR-09-BLAN-0234 (RP, DB). A.M. acknowledges the financial support of the Brazilian funding agency FAPESP (Postdoc fellowship—process number 2014/11806-9). This work was supported by award AR-13279 from the Space Telescope Science Institute (STScI), which is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. I.C. acknowledges the support from Smithsonian Astrophysical Observatory Telescope Data Center and from the grants MD-7355.2015.2 by the research council of the president of the Russian Federation, 15-32-21062 and 15-52-15050 by the Russian Foundation for Basic Research. This work is based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute (STScI), which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. The HST image mosaics were produced by the Frontier Fields Science Data Products Team at STScI. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. This work utilizes gravitational lensing models produced by PIs Bradac, Ebeling, Merten & Zitrin, Sharon, and Williams funded as part of the HST Frontier Fields program conducted by STScI. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The lens models were obtained from the Mikulski Archive for Space Telescopes (MAST).
Funders:
Funding AgencyGrant Number
Basal-CATAPFB-06/2007
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)32120003
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)ACT1101
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1141218
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)3160122
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)3140542
Iniciativa Científica Milenio del Ministerio de Economía, Fomento y TurismoIC120009
Agence Nationale pour la Recherche (ANR)ANR-09-BLAN-0234
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)2014/11806-9
Space Telescope Science InstituteAR-13279
NASANAS 5-26555
Smithsonian Astrophysical ObservatoryUNSPECIFIED
Russian Federation presidentMD-7355.2015.2
Russian Foundation for Basic Research15-52-15050
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:cosmology: observations; galaxies: clusters: individual (MACS J0717.5+3745) ; galaxies: high-redshift; gravitational lensing: strong
Issue or Number:2
Record Number:CaltechAUTHORS:20160510-090337363
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160510-090337363
Official Citation:N. Laporte et al 2016 ApJ 820 98
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66842
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 May 2016 17:01
Last Modified:09 Mar 2020 13:19

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