Optical identification of radio-loud active galactic nuclei in the ROSAT-Green-Bank sample with SDSS spectroscopy
文献类型：期刊论文
| 作者 | Wang DL(王德良)1,2 ; Wang JG(王建国)1,2; Dong, XB3
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2009-10 |
| 卷号 | 9期号:10页码:1078-1102 |
| 关键词 | galaxies: active galaxies: quasars BL Lacerate objects: general X-rays: general radio continuum: general |
| ISSN号 | 1674-4527 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Wang, DL (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | Results of extended and refined optical identification of 181 radio/X-ray sources in the RASS-Green Bank (RGB) catalog are presented (Brinkmann et al. 1997) which have been spectroscopically observed in the Sloan Digital Sky Survey (SDSS) DR5. The SDSS spectra of the optical counterparts are modeled in a careful and self-consistent way by incorporating the host galaxy's starlight. Optical emission line parameters are presented, which are derived accurately and reliably, along with the radio 1.4-5 GHz spectral indices estimated using (non-simultaneous) archival data. For 72 sources, the identifications are presented for the first time. It is confirmed that the majority of strong radio/X-ray emitters are radio-loud active galactic nuclei (AGNs), particularly blazars. Taking advantage of the high spectral quality and resolution and our refined spectral modeling, we are able to disentangle narrow line radio galaxies (NLRGs), as vaguely termed in most previous identification work, into Seyfert II galaxies and LINERs (low-ionization nuclear emission regions), based on the standard emission line diagnostics. The NLRGs in the RGB sample, mostly belonging to 'weak line radio galaxies', are found to have optical spectra consistent predominantly with LINERs, and only a small fraction with Seyfert II galaxies. A small number of LINERs have radio power as high as 10(23)-10(26) W Hz(-1) at 5 GHz, being among the strongest radio emitting LINERs known so far. Two sources are identified with radio-loud narrow line Seyfert I galaxies (NLS1s), a class of rare objects. The presence is also confirmed of flat-spectrum radio quasars whose radio-optical-X-ray effective spectral indices are similar to those of High-energy peaked BL Lacs (HBLs), as suggested by Padovani et al., although it is still a debate as to whether this is the case for their actual spectral energy distributions. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; LINE SEYFERT-1 GALAXIES ; BL-LACERTAE OBJECTS ; BLACK-HOLE MASSES ; SPECTRAL ENERGY-DISTRIBUTIONS ; BRIGHT QUASAR SURVEY ; EARLY DATA RELEASE ; EMISSION-LINE ; HOST GALAXIES ; SEDENTARY SURVEY |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1674-4527/9/10/002/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000271266300002 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4975]  |
| 专题 | 云南天文台_高能天体物理研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Graduate University of the Chinese Academy of Sciences, Beijing 100039, China 3.Center for Astrophysics, University of Science and Technology of China, Hefei 230026, China |
| 推荐引用方式 GB/T 7714 | Wang DL,Wang JG,Dong, XB. Optical identification of radio-loud active galactic nuclei in the ROSAT-Green-Bank sample with SDSS spectroscopy[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2009,9(10):1078-1102. |
| APA | Wang DL,Wang JG,&Dong, XB.(2009).Optical identification of radio-loud active galactic nuclei in the ROSAT-Green-Bank sample with SDSS spectroscopy.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,9(10),1078-1102. |
| MLA | Wang DL,et al."Optical identification of radio-loud active galactic nuclei in the ROSAT-Green-Bank sample with SDSS spectroscopy".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 9.10(2009):1078-1102. |
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来源：云南天文台
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