UV and NIR size of the low-mass field galaxies: the UV compact galaxies
文献类型：期刊论文
| 作者 | Cheng, Cheng5,6; Xu, Cong Kevin5,6; Xie, Lizhi4; Pan, Zhizheng3; Du, Wei6; Orellana-Gonzalez, Gustavo1,2; Shao, Xu5,6; Wu, Shumei5,6; Leiton, Roger2; Huang, Jia-Sheng5,6 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2020-01-17 |
| 卷号 | 633页码:9 |
| ISSN号 | 0004-6361 |
| 关键词 | galaxies: formation galaxies: dwarf Galaxy: center galaxies: structure ultraviolet: galaxies |
| DOI | 10.1051/0004-6361/201936186 |
| 通讯作者 | Cheng, Cheng(chengcheng@nao.cas.cn) |
| 英文摘要 | Context. Most of the massive star-forming galaxies are found to have "inside-out" stellar mass growth modes, which means the inner parts of the galaxies mainly consist of the older stellar population, while the star forming in the outskirt of the galaxy is still ongoing. Aims. The high-resolution HST images from Hubble Deep UV Legacy Survey and Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey projects with the unprecedented depth in both F275W and F160W bands are the perfect data sets to study the forming and formed stellar distribution directly. Methods. We selected the low redshift (0.05< z(spec)< 0.3) galaxy sample from the GOODS-North field where the HST F275W and F160W images are available. Then we measured the half light radius in F275W and F160W bands, which are the indicators of the star formation and stellar mass. Results. By comparing the F275W and F160W half light radius, we find the massive galaxies are mainly follow the "inside-out" growth mode, which is consistent with the previous results. Moreover, the HST F275W and F160W images reveal that some of the low-mass galaxies (< 10(8) M-circle dot) have the "outside-in" growth mode: their images show a compact UV morphology, implying an ongoing star formation in the galaxy centre, while the stars in the outskirts of the galaxies are already formed. The two modes transit smoothly at stellar mass range about 10(8-9) M-circle dot with a large scatter. We also try to identify the possible neighbour massive galaxies from the SDSS data, which represent the massive galaxy sample. We find that all of the spec-z selected galaxies have no massive galaxy nearby. Thus the "outside-in" mode we find in the low-mass galaxies are not likely originated from the environment. |
| WOS关键词 | ULTRAVIOLET-LUMINOUS GALAXIES ; STAR-FORMATION ; NEARBY GALAXIES ; GAMA ; SCALELENGTHS ; FEEDBACK ; Z-SIMILAR-TO-1 ; MORPHOLOGIES ; PHOTOMETRY ; CATALOGS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000508200600001 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/35483]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Cheng, Cheng |
| 作者单位 | 1.Univ Valparaiso, Inst Fis & Astron, Avda Gran Bretana 1111, Valparaiso, Chile 2.Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile 3.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China 4.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China 5.China Chile Joint Ctr Astron, Camino El Observ 1515, Santiago, Chile 6.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Cheng,Xu, Cong Kevin,Xie, Lizhi,et al. UV and NIR size of the low-mass field galaxies: the UV compact galaxies[J]. ASTRONOMY & ASTROPHYSICS,2020,633:9. |
| APA | Cheng, Cheng.,Xu, Cong Kevin.,Xie, Lizhi.,Pan, Zhizheng.,Du, Wei.,...&Araneda, Nicole.(2020).UV and NIR size of the low-mass field galaxies: the UV compact galaxies.ASTRONOMY & ASTROPHYSICS,633,9. |
| MLA | Cheng, Cheng,et al."UV and NIR size of the low-mass field galaxies: the UV compact galaxies".ASTRONOMY & ASTROPHYSICS 633(2020):9. |
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来源：紫金山天文台
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