Colour-magnitude relations of late-type galaxies
文献类型：期刊论文
| 作者 | Chang, Ruixiang ; Shen, Shiyin; Hou, Jinliang; Shu, Chenggang; Shao, Zhengyi
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2006-10-11 |
| 卷号 | 372期号:1页码:199-208 |
| 关键词 | galaxies : evolution galaxies : photometry galaxies : stellar content |
| 英文摘要 | We use a large sample of galaxies drawn from the Sloan Digital Sky Survey (SDSS) and Two-Micron All-Sky Survey (2MASS) to present colour-magnitude relations (CMRs) for late-type galaxies in both optical and optical-infrared (optical-IR) bands. A sample from SDSS Data Release 4 (DR4) is selected to investigate the optical properties. Optical-IR colours are estimated from a position matched sample of DR4 and the 2MASS, in which the photometric aperture mismatch between these two surveys is carefully corrected. It is shown that, after correcting the dust attenuation, the optical colours for faint galaxies (i.e.M-r > -21) have a very weak correlation with the luminosity, whereas the optical colours for bright galaxies (i.e. M-r < -21) are redder than those for more-luminous galaxies. All (optical, optical-IR and IR) colours show similar but stronger correlations with stellar mass than with absolute magnitude. The optical colours correlate more strongly with stellar mass surface density than with stellar mass, whereas optical-IR and IR colours show stronger correlations with stellar mass. By comparing the observed colours of our sample galaxies with the colours predicted by stellar population synthesis model, we find that massive late-type galaxies have older and higher-metallicity stellar population than that of less-massive galaxies. This suggests that CMRs for late-type galaxies are trends defined by the combination of stellar mean age and metallicity. Moreover, our results suggest that the stellar mean metallicity of late-type galaxy is mainly determined by its stellar mass, whereas the star formation history is mainly regulated by the stellar mass surface density. |
| 学科主题 | 星系和宇宙学研究中心 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; MASS-METALLICITY RELATION ; BAND OPTICAL-PROPERTIES ; STAR-FORMING GALAXIES ; SPIRAL GALAXIES ; ELLIPTIC GALAXIES ; DISTANT CLUSTERS ; FORMATION HISTORY ; STELLAR MASS ; DATA RELEASE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000240823800017 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12008]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Shanghai Astron Observ, Joint Inst Galaxy & Cosmol, Shanghai 200030, Peoples R China 2.Univ Sci & Technol China, Shanghai 200030, Peoples R China 3.Shanghai Normal Univ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Ruixiang,Shen, Shiyin,Hou, Jinliang,et al. Colour-magnitude relations of late-type galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2006,372(1):199-208. |
| APA | Chang, Ruixiang,Shen, Shiyin,Hou, Jinliang,Shu, Chenggang,&Shao, Zhengyi.(2006).Colour-magnitude relations of late-type galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,372(1),199-208. |
| MLA | Chang, Ruixiang,et al."Colour-magnitude relations of late-type galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 372.1(2006):199-208. |
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来源：上海天文台
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