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| Título: | Young galaxy candidates in the Hubble frontiers fields. II. MACS J0416-2403 |
Autor: | Infante, Leopoldo; Zheng, Wei; Molino, Alberto CSIC ORCID; Diego, José María CSIC ORCID ; Zitrin, Adi; Broadhurst, Tom; Ford, Holland C.; Kim, Sam | Fecha de publicación: | 2015 | Editor: | Institute of Physics Publishing | Citación: | Astrophysical Journal 815(1): 18 (2015) | Resumen: | We searched for z ≲ 7 Lyman-break galaxies in the optical-to-mid-infrared Hubble Frontier Field and associated parallel field observations of the strong-lensing cluster MACS J0416-2403. We discovered 22 candidates, of which 6 lie at z ≲ 9 and 1 lies at z ≲ 10. Based on the Hubble and Spitzer photometry, all have secure photometric redshifts and a negligible probability of being at lower redshifts according to their peak-probability ratios, . This substantial increase in the number of known high-redshift galaxies allows a solid determination of the luminosity function (LF) at z ≲ 8. The number of high-z candidates in the parallel field is considerably higher than that in the Abell 2744 parallel field. Our candidates have median stellar masses of M, star formation rates (SFRs) of M yr, and SFR-weighted ages of . Finally, we are able to put strong constraints on the z = 7, 8, 9, and 10 LFs. One of the objects in the cluster field is a z ≃ 10 candidate, with a magnification of μ ∼ 20 ± 13. This object is likely the faintest z ∼ 10 object known to date, allowing a first look into the extreme faint end (L ∼ 0.04 L∗) of the z ∼ 10 LF (It is named >Tayna> in the Aymara language). | Descripción: | arXiv:1510.07084v1.-- Infante, Leopoldo et al. | Versión del editor: | https://doi.org/10.1088/0004-637X/815/1/18 | URI: | http://hdl.handle.net/10261/140381 | DOI: | 10.1088/0004-637X/815/1/18 | Identificadores: | doi: 10.1088/0004-637X/815/1/18 issn: 1538-4357 e-issn: 0004-637X |
| Aparece en las colecciones: | (IFCA) Artículos (IAA) Artículos |
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| YoungMACS.pdf | 7,78 MB | Adobe PDF |  Visualizar/Abrir |
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