A Sample of Active Galactic Nuclei with Intermediate-mass Black Holes Extended to z ≈ 0.6
文献类型：期刊论文
| 作者 | Liu WJ(刘文娟)1; Ho, Luis C.2,3; Dong XB(董小波)1; Yao, Su4; Lira, Paulina5; Guo, Yicheng6 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2026-06-01 |
| 卷号 | 284期号:2 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ae64eb |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | We present a sample of 930 intermediate-mass black hole (IMBH) active galactic nuclei (AGNs) with BH masses of M-BH <= 2 & times; 10(6)M(circle dot), uniformly selected from the Seventeenth Data Release of the Sloan Digital Sky Survey, based on the detection of broad H alpha or H beta emission lines. Taking advantage of the wide wavelength coverage of BOSS/eBOSS spectroscopy, our sample extends the redshift coverage of low-z IMBH AGNs to z <= 0.57, significantly improving upon previous studies that were generally limited to z <= 0.35. This sample encompasses BH masses from 10(4.0) to 10(6.3)M(circle dot), with Eddington ratios ranging from 0.01 to 1.9. Among the z > 0.3 subset, 24 sources exhibit detectable broad Mg ii lambda lambda 2796, 2803 emission lines, including eight confirmed by independent DESI spectra. A preliminary analysis reveals a marked decline in both the maximum accretion rate (L-bol/L-Edd) and broad H alpha luminosity with decreasing redshift, possibly reflecting a cosmic evolution of accretion activity at the low-mass end, akin to the downsizing evolutionary trend seen in high-mass AGNs. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | DWARF SEYFERT NUCLEI ; OSCILLATION SPECTROSCOPIC SURVEY ; UNIFORMLY SELECTED SAMPLE ; DIGITAL SKY SURVEY ; HOST GALAXIES ; EMISSION ; EVOLUTION ; AGN ; CLASSIFICATION ; SEARCH |
| 资助项目 | (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Applied Basic Research Foundation of Yunnan Province (Yunnan Province Applied and Basic Research Foundation)[202501AT070029]; MOST divided by National Natural Science Foundation of China (NSFC)[12373013]; MOST divided by National Natural Science Foundation of China (NSFC)[12233001] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001769341200001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Applied Basic Research Foundation of Yunnan Province (Yunnan Province Applied and Basic Research Foundation)[202501AT070029] ; MOST divided by National Natural Science Foundation of China (NSFC)[12373013, 12233001] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29237]  |
| 专题 | 云南天文台_恒星物理研究组 |
| 通讯作者 | Liu WJ(刘文娟) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, People’s Republic of China; wjliu@ynao.ac.cn; 2.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People’s Republic of China; 3.Department of Astronomy, School of Physics, Peking University, Beijing 100871, People’s Republic of China; 4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; 5.Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile; 6.Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA |
| 推荐引用方式 GB/T 7714 | Liu WJ,Ho, Luis C.,Dong XB,et al. A Sample of Active Galactic Nuclei with Intermediate-mass Black Holes Extended to z ≈ 0.6[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2026,284(2). |
| APA | 刘文娟,Ho, Luis C.,董小波,Yao, Su,Lira, Paulina,&Guo, Yicheng.(2026).A Sample of Active Galactic Nuclei with Intermediate-mass Black Holes Extended to z ≈ 0.6.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,284(2). |
| MLA | 刘文娟,et al."A Sample of Active Galactic Nuclei with Intermediate-mass Black Holes Extended to z ≈ 0.6".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 284.2(2026). |
入库方式： OAI收割
来源：云南天文台
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