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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29675
Title: ALMA [C II] 158 μm Detection of a Redshift 7 Lensed Galaxy behind RXJ1347.1-1145
Authors: Bradač, Maruša
Garcia-Appadoo, Diego
Huang, Kuang-Han
Vallini, Livia
Quinn Finney, Emily
Hoag, Austin
Lemaux, Brian C.
Borello Schmidt, Kasper
Treu, Tommaso
Carilli, Chris
Dijkstra, Mark
Ferrara, Andrea
FONTANA, Adriano 
Jones, Tucker
Ryan, Russell
Wagg, Jeff
Gonzalez, Anthony H.
Issue Date: 2017
Journal: THE ASTROPHYSICAL JOURNAL LETTERS 
Number: 836
Issue: 1
First Page: L2
Abstract: We present the results of ALMA spectroscopic follow-up of a z = 6.766 Lyα emitting galaxy behind the cluster RX J1347.1-1145. We report the detection of [C II] 158 μm line fully consistent with the Lyα redshift and with the peak of the optical emission. Given the magnification of μ = 5.0 ± 0.3, the intrinsic (corrected for lensing) luminosity of the [C II] line is L <SUB>[C II]</SUB> = {1.4}<SUB>-0.3</SUB><SUP>+0.2</SUP>× {10}<SUP>7</SUP> {L}<SUB>☉ </SUB>, roughly ∼5 times fainter than other detections of z ∼ 7 galaxies. The result indicates that low L <SUB>[C II]</SUB> in z ∼ 7 galaxies compared to the local counterparts might be caused by their low metallicities and/or feedback. The small velocity offset ({{∆ }}v={20}<SUB>-40</SUB><SUP>+140</SUP> {km} {{{s}}}<SUP>-1</SUP>) between the Lyα and [C II] line is unusual, and may be indicative of ionizing photons escaping. <P />These observations are based on the following ALMA data: ADS/JAO.ALMA#2015.1.00091.S. They are also associated with programs Spitzer #90009, 60034, 00083, 50610, 03550, 40593, and HST # GO10492, GO11591, GO12104, and GO13459. Furthermore based on multi-year KECK programs.
URI: http://hdl.handle.net/20.500.12386/29675
URL: https://iopscience.iop.org/article/10.3847/2041-8213/836/1/L2
ISSN: 2041-8205
DOI: 10.3847/2041-8213/836/1/L2
Bibcode ADS: 2017ApJ...836L...2B
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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