| Full text | |
| Author(s): Show less - |
Zheng, Wei
;
Zitrin, Adi
;
Infante, Leopoldo
;
Laporte, Nicolas
;
Huang, Xingxing
;
Moustakas, John
;
Ford, Holland C.
;
Shu, Xinwen
;
Wang, Junxian
;
Diego, Jose M.
;
Bauer, Franz E.
;
Troncoso Iribarren, Paulina
;
Broadhurst, Tom
;
Molino, Alberto
Total Authors: 14
|
| Document type: | Journal article |
| Source: | ASTROPHYSICAL JOURNAL; v. 836, n. 2 FEB 20 2017. |
| Web of Science Citations: | 2 |
| Abstract | |
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 similar or equal to 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-circle dot, and was formed at z = 13.2(-1.6)(+1.9) when the universe was approximate to 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 similar or equal to -15.5, approximately a factor of 10 deeper than the parallel fields. (AU) | |
| FAPESP's process: | 14/11806-9 - Challenges for the new generation of wide-field photometric redshift surveys like J-PAS |
| Grantee: | Alberto Molino Benito |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |