Discovery of Metastable He I* λ10830 Mini-broad Absorption Lines and Very Narrow Paschen α Emission Lines in the ULIRG Quasar IRAS F11119+3257
文献类型:期刊论文
作者 | Pan, Xiang1; Zhou, Hongyan1,2; Liu WJ(刘文娟)3; Liu, Bo1,2; Ji, Tuo1; Shi ,Xiheng1; Zhang, Shaohua1; Jiang, Peng1; Wang, Huiyuan2; Hao, Lei4 |
刊名 | The Astrophysical Journal |
出版日期 | 2019-10-01 |
卷号 | 883期号:2 |
ISSN号 | 0004-637X |
关键词 | galaxies: evolution galaxies: individual (IRAS F11119+3257) quasars: absorption lines quasars: emission lines |
DOI | 10.3847/1538-4357/ab40b5 |
产权排序 | 第3完成单位 |
英文摘要 | IRAS F11119+3257 is a quasar-dominated ultraluminous infrared galaxy, with a partially obscured narrow-line Seyfert 1 nucleus. In this paper, we present the near-IR (NIR) spectroscopy of F11119+3257, in which we find unusual Paschen emission lines and metastable He i* λ10830 absorption associated with the previously reported atomic sodium and molecular OH mini-BAL (broad absorption line) outflow. Photoionization diagnosis confirms previous findings that the outflows are at kiloparsec scales. Such large-scale outflows should produce emission lines. We indeed find that high-ionization emission lines ([O III], [Ne III], and [Ne V]) are dominated by blueshifted components at similar speeds to the mini-BALs. The blueshifted components are also detected in some low-ionization emission lines, such as [O II] λ3727 and some Balmer lines (Hα, Hβ, and Hγ), even though their cores are dominated by narrow (FWHMNEL = 570 ± 40 km s−1) or broad components at the systemic redshift of z = 0.18966 ± 0.00006. The mass flow rate (230–730 M ⊙ yr−1) and the kinetic luminosity ( erg s−1) are then inferred jointly from the blueshifted emission and absorption lines. In the NIR spectrum of F11119+3257, we also find that the Paschen emission lines are unique, in which a very narrow (FWHM = 260 ± 20 km s−1) component is shown in only Paα. This narrow component most probably comes from heavily obscured star formation. Based on the Paα and Paβ emissions, we obtain an extinction at the H band, A H > 2.1 (or a reddenning of > 3.7), and a star formation rate of SFR > 130 M ⊙ yr−1 that resembles the estimates inferred from the far-IR emissions (SFRFIR = 190 ± 90 M ⊙ yr−1). |
学科主题 | 天文学 ; 星系与宇宙学 ; 星系形成与演化 |
URL标识 | 查看原文 |
语种 | 英语 |
出版者 | The American Astronomical Society |
WOS记录号 | IOP:0004-637X-883-2-AB40B5 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21426] |
专题 | 云南天文台_自由探索组 |
通讯作者 | Zhou, Hongyan |
作者单位 | 1.SOA Key Laboratory for Polar Science, Polar Research Institute of China, 451 Jinqiao Road, Shanghai, 200136, People's Republic of China 2.Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Sciences and Technology of China, Chinese Academy of Sciences, Hefei, Anhui, 230026, People's Republic of China 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, People's Republic of China 4.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, People's Republic of China |
推荐引用方式 GB/T 7714 | Pan, Xiang,Zhou, Hongyan,Liu WJ,et al. Discovery of Metastable He I* λ10830 Mini-broad Absorption Lines and Very Narrow Paschen α Emission Lines in the ULIRG Quasar IRAS F11119+3257[J]. The Astrophysical Journal,2019,883(2). |
APA | Pan, Xiang.,Zhou, Hongyan.,Liu WJ.,Liu, Bo.,Ji, Tuo.,...&Hao, Lei.(2019).Discovery of Metastable He I* λ10830 Mini-broad Absorption Lines and Very Narrow Paschen α Emission Lines in the ULIRG Quasar IRAS F11119+3257.The Astrophysical Journal,883(2). |
MLA | Pan, Xiang,et al."Discovery of Metastable He I* λ10830 Mini-broad Absorption Lines and Very Narrow Paschen α Emission Lines in the ULIRG Quasar IRAS F11119+3257".The Astrophysical Journal 883.2(2019). |
入库方式: OAI收割
来源:云南天文台
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