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Young Galaxy Candidates in the Hubble Frontier Fields. IV. MACS J1149.5+2223

Zheng, Wei and Zitrin, Adi and Infante, Leopoldo and Laporte, Nicolas and Huang, Xingxing and Moustakas, John and Ford, Holland C. and Shu, Xinwen and Wang, Junxian and Diego, Jose M. and Bauer, Franz E. and Troncoso Iribarren, Paulina and Broadhurst, Tom and Molino, Alberto (2017) Young Galaxy Candidates in the Hubble Frontier Fields. IV. MACS J1149.5+2223. Astrophysical Journal, 836 (2). Art. No. 210. ISSN 0004-637X.

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We search for high-redshift dropout galaxies behind the Hubble Frontier Fields (HFF) galaxy cluster MACS J1149.5+2223, a powerful cosmic lens that has revealed a number of unique objects in its field. Using the deep images from the Hubble and Spitzer space telescopes, we find 11 galaxies at z > 7 in the MACS J1149.5+2223 cluster field, and 11 in its parallel field. The high-redshift nature of the bright z ≃ 9.6 galaxy MACS1149-JD, previously reported by Zheng et al., is further supported by non-detection in the extremely deep optical images from the HFF campaign. With the new photometry, the best photometric redshift solution for MACS1149-JD reduces slightly to z = 9.44 ± 0.12. The young galaxy has an estimated stellar mass of (7 ± 2) x 10^8 M_☉, and was formed at z = 13.2_(-1.6)^(+1.9) when the universe was ≈300 Myr old. Data available for the first four HFF clusters have already enabled us to find faint galaxies to an intrinsic magnitude of M_(UV) ≃ -15.5, approximately a factor of 10 deeper than the parallel fields.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Zitrin, Adi0000-0002-0350-4488
Diego, Jose M.0000-0001-9065-3926
Bauer, Franz E.0000-0002-8686-8737
Troncoso Iribarren, Paulina0000-0001-6162-3023
Additional Information:© 2017 American Astronomical Society. Received 2016 September 6. Accepted 2017 January 29. Published 2017 February 23. The work presented in this paper is based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the Data Archive at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. It is also based on data obtained 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 the teams led by Bradač, Ishigaki, Kneib & Natarajan, Sharon, Williams, Merten & Zitrin, respectively. Support for A.Z. is provided by NASA through Hubble Fellowship grant HST-HF-51334.01-A awarded by STScI. N.L. acknowledges support from a European Research Council Advanced Grant FP7/669253. L.I., N.L., F.E.B. and P.T.I. are in part supported by CONICYT-Chile grants Basal-CATA PFB-06/2007, 3140542 and Conicyt-PIA-ACT 1417. F.E.B. also thanks CONICYT-Chile grant FONDECYT Regular 1141218 and the Ministry of Economy, Development, and Tourism's Millennium Science Initiative through grant IC120009, awarded to The Millennium Institute of Astrophysics, MAS. J.M.D. acknowledges support of the consolider projects CSD2010-00064, AYA2012-39475-C02-01 and AYA2015-64508-P (MINECO/FEDER, UE). A.M. acknowledges the financial support of the Brazilian funding agency FAPESP (Post-doc fellowship 2014/11806-9). X.X.H. and J.X.W. acknowledge support from the National Science Foundation of China (grants 11233002,11421303) and the CAS Frontier Science Key Research Program (QYZDJ-SSWSLH006).
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASANAS 5-26555
NASA Hubble FellowshipHST-HF-51334.01-A
European Research Council (ERC)FP7/669253
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)3140542
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)PIA-ACT 1417
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1141218
Iniciativa Científica Milenio del Ministerio de Economía, Fomento y TurismoIC120009
Ministerio de Economía, Industria y Competitividad (MINECO)CSD2010-00064
Ministerio de Economía, Industria y Competitividad (MINECO)AYA2012-39475-C02-01
Ministerio de Economía, Industria y Competitividad (MINECO)AYA2015-64508-P
Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)UNSPECIFIED
MINECO/FEDER, UE2014/11806-9
National Science Foundation China11233002
National Science Foundation China11421303
Chinese Academy of Sciences Frontier Science Key Research ProgramQYZDJ-SSWSLH006
Subject Keywords:cosmology: observations; galaxies: clusters: individual (MACS J1149.5+2223) ; galaxies: high-redshift; gravitational lensing: strong
Issue or Number:2
Record Number:CaltechAUTHORS:20170407-142008968
Persistent URL:
Official Citation:Wei Zheng et al 2017 ApJ 836 210
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75860
Deposited By: Ruth Sustaita
Deposited On:07 Apr 2017 22:25
Last Modified:09 Mar 2020 13:18

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