The soft X-ray properties of quasars in the Sloan Digital Sky Survey
文献类型：期刊论文
| 作者 | Shen, SY; White, SDM; Mo, HJ; Voges, W; Kauffmann, G; Tremonti, C; Anderson, SF |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2006-07-11 |
| 卷号 | 369期号:4页码:1639-1653 |
| 关键词 | galaxies : active galaxies : evolution galaxies : nuclei quasars : general X-rays : galaxies X-rays : general |
| 英文摘要 | We use the ROSAT All-Sky Survey (RASS) to study the soft X-ray properties of a homogeneous sample of 46 420 quasars selected from the third data release of the Sloan Digital Sky Survey (SDSS). Optical luminosities, both at rest frame 2500 angstrom (L-2500) and in [O III] (L-[O III]) span more than three orders of magnitude, while redshifts range over 0.1 < z < 5.4. We detect 3366 quasars directly in the observed 0.1-2.4 keV band. Subsamples of radio-loud quasars (RLQs) and radio-quiet quasars (RQQs) are obtained by cross-matching with the Faint Images of the Radio Sky at Twenty-cm (FIRST) catalogue. We study the distribution of X-ray luminosity as a function of optical luminosity, redshift and radio power using both individual detections and stacks of complete sets of similar quasars. At every optical luminosity and redshift log L-2keV is, to a good approximation, normally distributed with dispersion similar to 0.40, at least brightwards of the median X-ray luminosity. This median X-ray luminosity of quasars is a power law of optical luminosity with index similar to 0.53 for L-2500 and similar to 0.30 for L-[O III]. RLQs are systematically brighter than RQQs by about a factor of 2 at given optical luminosity. The zero-points of these relations increase systematically with redshift, possibly in different ways for RLQs and RQQs. Evolution is particularly strong at low redshift and if the optical luminosity is characterized by L-[O III]. At low redshift and at given L-[O III] the soft X-ray emission from type II active galactic nucleus (AGN) is more than 100 times weaker than that from type I AGN. |
| 学科主题 | 星系和宇宙学研究中心 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BAND ENERGY-DISTRIBUTION ; ACTIVE GALACTIC NUCLEI ; ROSAT DETECTED QUASARS ; HIGH-REDSHIFT QUASARS ; DATA RELEASE ; RADIO-QUIET ; ALL-SKY ; 1ST SURVEY ; CATALOG ; SAMPLE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000238624600009 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12010]  |
| 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, Shanghai 200030, Peoples R China 2.Max Planck Inst Astrophys, D-85741 Garching, Germany 3.Max Planck Inst Extraterr Phys, D-85741 Garching, Germany 4.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 5.Steward Observ, Tucson, AZ 85721 USA 6.Univ Washington, Dept Astron, Seattle, WA 98195 USA |
| 推荐引用方式 GB/T 7714 | Shen, SY,White, SDM,Mo, HJ,et al. The soft X-ray properties of quasars in the Sloan Digital Sky Survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,369(4):1639-1653. |
| APA | Shen, SY.,White, SDM.,Mo, HJ.,Voges, W.,Kauffmann, G.,...&Anderson, SF.(2006).The soft X-ray properties of quasars in the Sloan Digital Sky Survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,369(4),1639-1653. |
| MLA | Shen, SY,et al."The soft X-ray properties of quasars in the Sloan Digital Sky Survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 369.4(2006):1639-1653. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
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。