A Comprehensive and Uniform Sample of Broad-line Active Galactic Nuclei from the SDSS DR7 | |
Liu,He-Yang4,5; Liu,Wen-Juan1; Dong,Xiao-Bo1; Zhou,Hongyan2,3; Wang,Tinggui3; Lu,Honglin3; Yuan,Weimin4,5 | |
刊名 | The Astrophysical Journal Supplement Series |
2019-07-25 | |
卷号 | 243期号:2 |
关键词 | galaxies: active galaxies: nuclei galaxies: Seyfert quasars: emission lines surveys |
ISSN号 | 0067-0049 |
DOI | 10.3847/1538-4365/ab298b |
英文摘要 | Abstract A new, complete sample of 14,584 broad-line active galactic nuclei (AGNs) at z?0.35 is presented, which are uncovered homogeneously from the complete database of galaxies and quasars observed spectroscopically in the Sloan Digital Sky Survey Seventh Data Release. The stellar continuum is properly removed for each spectrum with significant host absorption line features, and careful analyses of the emission line spectra, particularly in the Hα and Hβ wavebands, are carried out. The broad Balmer emission line, particularly Hα, is used to indicate the presence of an AGN. The broad Hα lines have luminosities in a range of 1038.5– 1044.3 , and line widths (FWHMs) of 500–34,000 . The virial black hole masses, estimated from the broad-line measurements, span a range of 105.1– 1010.3 , and the Eddington ratios vary from ?3.3 to 1.3 in logarithmic scale. Other quantities such as multiwavelength photometric properties and flags denoting peculiar line profiles are also included in this catalog. We describe the construction of this catalog and briefly discuss its properties. The catalog is publicly available online. This homogeneously selected AGN catalog, along with the accurately measured spectral parameters, provides the most updated, largest AGN sample data, which will enable further comprehensive investigations of the properties of the AGN population in the low-redshift universe. |
语种 | 英语 |
出版者 | The American Astronomical Society |
WOS记录号 | IOP:0067-0049-243-2-AB298B |
内容类型 | 期刊论文 |
源URL | [http://ir.bao.ac.cn/handle/114a11/27169] |
专题 | 中国科学院国家天文台 |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan, 650011, People's Republic of China; wjliu@ynao.ac.cn 2.Polar Research Institute of China, 451 Jinqiao Road, Shanghai, 200136, People's Republic of China 3.CAS Key Laboratory for Researches in Galaxies and Cosmology, University of Sciences and Technology of China, Hefei, Anhui, 230026, People's Republic of China 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, People's Republic of China 5.Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100101, People's Republic of China; liuheyang@nao.cas.cn, wmy@nao.cas.cn |
推荐引用方式 GB/T 7714 | Liu,He-Yang,Liu,Wen-Juan,Dong,Xiao-Bo,et al. A Comprehensive and Uniform Sample of Broad-line Active Galactic Nuclei from the SDSS DR7[J]. The Astrophysical Journal Supplement Series,2019,243(2). |
APA | Liu,He-Yang.,Liu,Wen-Juan.,Dong,Xiao-Bo.,Zhou,Hongyan.,Wang,Tinggui.,...&Yuan,Weimin.(2019).A Comprehensive and Uniform Sample of Broad-line Active Galactic Nuclei from the SDSS DR7.The Astrophysical Journal Supplement Series,243(2). |
MLA | Liu,He-Yang,et al."A Comprehensive and Uniform Sample of Broad-line Active Galactic Nuclei from the SDSS DR7".The Astrophysical Journal Supplement Series 243.2(2019). |
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