The Strong Gravitationally Lensed Herschel Galaxy HLock01: Optical Spectroscopy Reveals a Close Galaxy Merger with Evidence of Inflowing Gas
文献类型:期刊论文
作者 | Marques-Chaves, Rui1,2; Perez-Fournon, Ismael1,2; Gavazzi, Raphael3,4; Martinez-Navajas, Paloma I.1,2; Riechers, Dominik5; Rigopoulou, Dimitra2,6; Cabrera-Lavers, Antonio1,7; Clements, David L.8; Cooray, Asantha9; Farrah, Duncan10 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2018-02-20 |
卷号 | 854期号:2页码:20 |
ISSN号 | 0004-637X |
关键词 | cosmology: observations galaxies: evolution galaxies: individual (HLock01) galaxies: starburst gravitational lensing: strong |
DOI | 10.3847/1538-4357/aaabb7 |
英文摘要 | The submillimeter galaxy (SMG) HERMES J105751.1+ 573027 (hereafter HLock01) at z = 2.9574 +/- 0.0001 is one of the brightest gravitationally lensed sources discovered in the Herschel Multi-tiered Extragalactic Survey. Apart from the high flux densities in the far-infrared, it is also extremely bright in the rest-frame ultraviolet (UV), with a total apparent magnitude m(UV) similar or equal to 19.7 mag. We report here deep spectroscopic observations with the Gran Telescopio Canarias of the optically bright lensed images of HLock01. Our results suggest that HLock01 is a merger system composed of the Herschel-selected SMG and an optically bright Lyman break-like galaxy (LBG), separated by only 3.3 kpc in projection. While the SMG appears very massive. (M-* similar or equal to 5 x 10(11) M-circle dot), with a highly extinguished stellar component (A(V) similar or equal to 4.3), the LBG is a young, lower-mass (M-* similar or equal to 1 x 10(10) M-circle dot), but still luminous (10 x L-UV*) satellite galaxy. Detailed analysis of the high signal-to-noise ratio (S/N) rest-frame UV spectrum of the LBG shows complex kinematics of the gas, exhibiting both blueshifted and redshifted absorption components. While the blueshifted component is associated with strong galactic outflows from the massive stars in the LBG, as is common in most star-forming galaxies, the redshifted component may be associated with gas inflow seen along a favorable sightline to the LBG. We also find evidence of an extended gas reservoir around HLock01 at an impact parameter of 110 kpc, through the detection of C II lambda lambda 1334 absorption in the red wing of a bright Ly alpha emitter at z similar or equal to 3.327. The data presented here highlight the power of gravitational lensing in high S/N studies to probe deeply into the physics of high-z star-forming galaxies. |
WOS关键词 | STAR-FORMING GALAXIES ; LYMAN-BREAK GALAXIES ; DIGITAL SKY SURVEY ; INTEGRAL FIELD SPECTROSCOPY ; HUBBLE-SPACE-TELESCOPE ; HIGH-REDSHIFT GALAXIES ; 3RD DATA RELEASE ; SIMILAR-TO 2 ; SUBMILLIMETER GALAXIES ; ULTRAVIOLET-SPECTRUM |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000425770500016 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22304] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Marques-Chaves, Rui |
作者单位 | 1.Inst Astrofis Canarias, C Via Lactea S-N, E-38205 Tenerife, Spain 2.Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain 3.UPMC, Inst Astrophys Paris, UMR7095, CNRS, F-75014 Paris, France 4.UPMC, Sorbonne Univ, F-75014 Paris, France 5.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 6.Univ Oxford, Dept Phys, Astrophys, Keble Rd, Oxford OX1 3RH, England 7.GRANTECAN, Cuesta de San Jose S-N, E-38712 Brena Baja, La Palma, Spain 8.Imperial Coll London, Astrophys Grp, Blackett Lab, Prince Consort Rd, London SW7 2AZ, England 9.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA 10.Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA |
推荐引用方式 GB/T 7714 | Marques-Chaves, Rui,Perez-Fournon, Ismael,Gavazzi, Raphael,et al. The Strong Gravitationally Lensed Herschel Galaxy HLock01: Optical Spectroscopy Reveals a Close Galaxy Merger with Evidence of Inflowing Gas[J]. ASTROPHYSICAL JOURNAL,2018,854(2):20. |
APA | Marques-Chaves, Rui.,Perez-Fournon, Ismael.,Gavazzi, Raphael.,Martinez-Navajas, Paloma I..,Riechers, Dominik.,...&Wardlow, Julie.(2018).The Strong Gravitationally Lensed Herschel Galaxy HLock01: Optical Spectroscopy Reveals a Close Galaxy Merger with Evidence of Inflowing Gas.ASTROPHYSICAL JOURNAL,854(2),20. |
MLA | Marques-Chaves, Rui,et al."The Strong Gravitationally Lensed Herschel Galaxy HLock01: Optical Spectroscopy Reveals a Close Galaxy Merger with Evidence of Inflowing Gas".ASTROPHYSICAL JOURNAL 854.2(2018):20. |
入库方式: OAI收割
来源:紫金山天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。