| Photometric study of galaxies with OH megamasers in the infrared | |
Chen PS(陈培生) ; Dan HG(单红光); Gao YF(高亦菲); Chen, PS (reprint author), Chinese Acad Sci, Natl Observ, Yunnan Observ, Kunming, Peoples R China.
| |
| 发表期刊 | ASTRONOMICAL JOURNAL
 |
| 2007-02 | |
| 卷号 | 133期号:2页码:496-503 |
| DOI | 10.1086/510130 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Galaxies : Nuclei Galaxies : Starburst Infrared : Galaxies Masers Radio Lines : Galaxies |
| 摘要 | OH megamasers are the most luminous masers in the universe. The total of 109 OH megamaser (OHM) galaxies known so far have been collected, and cross-identifications of those OHM galaxies with Two Micron All Sky Survey (2MASS) sources are made in this paper. Using 2MASS and IRAS data, the infrared properties of OHM-detected and nondetected sources are compared. It is shown that the main difference between those two kinds of sources is the infrared color from 25 to 60 mu m. Statistically, the OHM-detected sources have redder colors and steeper spectral indices in the 25-60 mu m region than the nondetected sources. In addition, considering the spectral types, the properties of the OHM galaxies in the near-infrared and far-infrared are discussed. It is found that Seyfert 1 and Seyfert 2 sources with hidden broad-line regions (BLRs) have redder colors and steeper spectral indices than other sources, including LINER, composite spectrum nucleus, and H II sources in the near-infrared region, whereas the latter have redder colors and steeper spectral indices than the Seyfert 1 and Seyfert 2 sources with hidden BLRs in the far-infrared. It is also found that almost all sources either with or without an identified spectral type show a starburst-dominated feature in the far-infrared, while a considerable number of sources, in particular Seyfert 1 and Seyfert 2 sources with hidden BLRs, show an active galactic nucleus-dominated feature in the near-infrared. Furthermore, as far-infrared radiation at 35 and 53 mu m is likely responsible for the OH maser pumping in OHM galaxies, the pumping efficiencies in the infrared are also analyzed in this paper. It is found that, statistically, the pumping efficiencies increase with far-infrared color. It is also found that, statistically, the OH peak fluxes are not proportional to the related infrared fluxes at either 35 or 53 mu m. This result implies that the pump lines are optically thin and the pump sources are unsaturated. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6256 |
| URL | 查看原文 |
| 归档日期 | 2007-01-22 |
| WOS记录号 | WOS:000243730000014 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | JY SAMPLE ; OPTICAL CLASSIFICATION ; SEYFERT-GALAXIES ; MASERS ; EMISSION ; SPECTROSCOPY ; SEARCH ; Z-GREATER-THAN-0.1 ; STARBURST ; COMPACT |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4219 |
| 专题 | 其他 |
| 通讯作者 | Chen, PS (reprint author), Chinese Acad Sci, Natl Observ, Yunnan Observ, Kunming, Peoples R China. |
| 作者单位 | National Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, China |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Chen PS,Dan HG,Gao YF,et al. Photometric study of galaxies with OH megamasers in the infrared[J]. ASTRONOMICAL JOURNAL,2007,133(2):496-503. |
| APA | Chen PS,Dan HG,Gao YF,&Chen, PS .(2007).Photometric study of galaxies with OH megamasers in the infrared.ASTRONOMICAL JOURNAL,133(2),496-503. |
| MLA | Chen PS,et al."Photometric study of galaxies with OH megamasers in the infrared".ASTRONOMICAL JOURNAL 133.2(2007):496-503. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Photometric Study of（278KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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。
修改评论