Edge-on H i-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog
文献类型：期刊论文
| 作者 | He,Min2,3 ; Wu,Hong2,3; Du,Wei3; Wicker,James1; Zhao,Pingsong2,3; Lei,Fengjie2,3; Liu,Jifeng2,3
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| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-07-22 |
| 卷号 | 880期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: evolution galaxies: formation radio lines: galaxies |
| DOI | 10.3847/1538-4357/ab2710 |
| 英文摘要 | Abstract Ultra-diffuse galaxies are objects that have very extended morphology and faint central surface brightness. Most UDGs are discovered in galaxy clusters and groups, but some are also found in low-density environments. The diffuse morphology and faint surface brightness make them difficult to distinguish from the sky background. Several previous works have suggested that at least some UDGs are consistent with exponential surface brightness profiles). The surface brightness of exponential disks is enhanced in edge-on systems, so searching for edge-on systems may be an efficient way to select UDGs. In this paper, we focus on searching for edge-on H i-bearing ultra-diffuse sources (HUDS) from the 40% Arecibo Legacy Fast ALFA (ALFALFA) catalog, based on Sloan Digital Sky Survey g- and r-band images. After correcting the observed central surface brightness to a face-on perspective, we discover 11 edge-on HUDS candidates. All these newly discovered HUDS candidates are blue and H i-bearing, similar to other HUDS in 70% ALFALFA catalog, and different from UDGs in clusters. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-880-1-AB2710 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28780]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing, 100049, People’s Republic of China 3.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China; hemin13@live.com, hwu@bao.ac.cn, wdu@bao.ac.cn |
| 推荐引用方式 GB/T 7714 | He,Min,Wu,Hong,Du,Wei,et al. Edge-on H i-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog[J]. The Astrophysical Journal,2019,880(1). |
| APA | He,Min.,Wu,Hong.,Du,Wei.,Wicker,James.,Zhao,Pingsong.,...&Liu,Jifeng.(2019).Edge-on H i-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog.The Astrophysical Journal,880(1). |
| MLA | He,Min,et al."Edge-on H i-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog".The Astrophysical Journal 880.1(2019). |
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