Estimating black hole masses in young radio sources using CFHT spectroscopy
文献类型：期刊论文
| 作者 | Gu, M. F.1; Pak, S.2; Ho, L. C.3 |
| 刊名 | ASTRONOMISCHE NACHRICHTEN
 |
| 出版日期 | 2009-03-01 |
| 卷号 | 330期号:2-3页码:253-256 |
| 关键词 | black hole physics galaxies: active galaxies: compact galaxies: evolution quasars: absorption lines |
| 英文摘要 | The correlation between black hole masses and stellar velocity dispersions provides an efficient method to determine the masses of black holes in active galaxies. We obtained optical spectra of a Compact-Steep-Spectrum (CSS) galaxy 4C+29.70, using the Canada-France-Hawaii Telescope (CFHT) equipped with OSIS, in 2003 August 6. Several stellar absorption features, such as Mg I (5175 angstrom), Ca E band (5269 angstrom) and Na D (5890 angstrom), were detected in the spectra. The stellar velocity dispersion, sigma, of the host galaxy, measured from absorption features is approximate to 250 km s(-1). If 4C +29.70 follows the M(BH)-sigma relation established for nearby galaxies, then its central black hole has a mass of approximate to 3.3 x 10(8) M(circle dot). In combination with the black hole masses of seven GPS galaxies in Snellen et al. (2003), we find that the average black hole mass of these eight young radio sources is smaller than that of the Bettoni et al. (2003) sample of extended radio galaxies. This may indicate that young radio sources are likely at the early evolutionary stage of radio galaxies, at which the central black holes may still undergo rapid growth. However, this needs further investigations. (C) 2009 WILEY-VCH Verlag GmbH & Co, KGaA, Weinheim |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 星系与宇宙学研究中心 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; COMPACT STEEP-SPECTRUM ; VELOCITY DISPERSION ; STAR-FORMATION ; GALAXIES ; CONNECTION ; ACCRETION ; CLUSTERS ; QUASARS ; LINERS |
| 收录类别 | SCI ; ISTP |
| 语种 | 英语 |
| WOS记录号 | WOS:000264306600034 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12625]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Kyung Hee Univ, Dept Astron & Space Sci, Yongin 446701, Gyeonggi Do, South Korea 3.Observ Carnegie Inst Washington, Pasadena, CA 91101 USA |
| 推荐引用方式 GB/T 7714 | Gu, M. F.,Pak, S.,Ho, L. C.. Estimating black hole masses in young radio sources using CFHT spectroscopy[J]. ASTRONOMISCHE NACHRICHTEN,2009,330(2-3):253-256. |
| APA | Gu, M. F.,Pak, S.,&Ho, L. C..(2009).Estimating black hole masses in young radio sources using CFHT spectroscopy.ASTRONOMISCHE NACHRICHTEN,330(2-3),253-256. |
| MLA | Gu, M. F.,et al."Estimating black hole masses in young radio sources using CFHT spectroscopy".ASTRONOMISCHE NACHRICHTEN 330.2-3(2009):253-256. |
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来源：上海天文台
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