2MASS observation of BL Lac objects II
文献类型：期刊论文
| 作者 | Mao LS(毛李胜)1,2,3
|
| 刊名 | NEW ASTRONOMY
 |
| 出版日期 | 2011-12 |
| 卷号 | 16期号:8页码:503-529 |
| 关键词 | BL Lacertae objects Infrared |
| ISSN号 | 1384-1076 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Mao, LS (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | In this paper, we have searched for the Two Micron All Sky Survey (2MASS) counterparts of 1434 BL Lacs. Eight hundred and thirty-three of 1434 BL Lacs (similar to 58%) have spatially coincident 2MASS counterparts. Fermi-detected BL Lacs (FBLs) have a much higher 2MASS detection rate than non-Fermi-detected BL Lacs (non-FBLs) (similar to 95% vs 49%). We compare the near-infrared (NIR) apparent magnitudes, monochromatic luminosities and spectral indices of different subclasses of BL Lacs: (i) FBLs are significantly brighter and more luminous than non-FBLs; (ii) low-energy peaked BL Lacs (LBLs) are significantly more luminous than high-energy peaked BL Lacs (HBLs); (iii) the NIR spectral index, alpha(IR), shows a sequence of decrease from LBLs to intermediate-energy peaked BL Lacs (IBLs) then to HBLs. The K-S band luminosity and NIR spectral index are both strongly anti-correlated with the synchrotron peak frequency (v(peak)). About 66% of BL Lacs in our sample are located close to the power law line in the J-H-H-K-S diagram, which implies predominantly non-thermal radiation in the NIR range. We label 218 BL Lacs whose NIR spectra show convex curvatures probably due to the significant contaminations of host-galaxy starlight. Finally we investigate the correlation between NIR and gamma-ray emission using the 2MASS observational data. (C) 2011 Elsevier B.V. All rights reserved. |
| 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] | RAY-LOUD BLAZARS ; SPECTRAL ENERGY-DISTRIBUTIONS ; ACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; NEAR-INFRARED OBSERVATIONS ; SELF-COMPTON MODEL ; ALL-SKY SURVEY ; LACERTAE OBJECTS ; GAMMA-RAY ; X-RAY |
| 收录类别 | SCI |
| 原文出处 | http://www.sciencedirect.com/science/article/pii/S1384107611000467 |
| 语种 | 英语 |
| WOS记录号 | WOS:000293117000005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/7049]  |
| 专题 | 云南天文台_星系研究组 |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China 2.Graduate School of Chinese Academy of Sciences, Beijing 100039, China 3.Department of Physics, Yunnan Normal University, Kunming 650092, China |
| 推荐引用方式 GB/T 7714 | Mao LS. 2MASS observation of BL Lac objects II[J]. NEW ASTRONOMY,2011,16(8):503-529. |
| APA | Mao LS.(2011).2MASS observation of BL Lac objects II.NEW ASTRONOMY,16(8),503-529. |
| MLA | Mao LS."2MASS observation of BL Lac objects II".NEW ASTRONOMY 16.8(2011):503-529. |
入库方式： OAI收割
来源：云南天文台
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