NEW 2MASS NEAR-INFRARED PHOTOMETRY FOR GLOBULAR CLUSTERS IN M31
文献类型：期刊论文
| 作者 | Wang, Song1,2 ; Ma, Jun1; Wu, Zhenyu1; Zhou, Xu1
|
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2014-07-01 |
| 卷号 | 148期号:1 |
| 关键词 | catalogs galaxies: individual (M31) galaxies: spiral galaxies: star clusters: general |
| 英文摘要 | We present Two Micron All Sky Survey JHK(s) photometry for 913 star clusters and candidates in the field of M31, which are selected from the latest Revised Bologna Catalog of M31 globular clusters (GCs) and candidates. The photometric measurements in this paper supplement this catalog, and provide the most comprehensive and homogeneous photometric catalog for M31 GCs in the JHK(s) bandpasses. In general, our photometry is consistent with previous measurements. The globular cluster luminosity function (GCLF) peaks for the confirmed GCs derived by fitting a t(5) distribution using the maximum likelihood method are J(0) = 15.3481(-0.208)(+0.206), H-0 = 14.703(-0.180)(+0.176), and K-s0 = 14.534(-0.146)(+0.142), all of which agree well with previous studies. The GCLFs are different between metal-rich (MR) and metal-poor (MP), and between inner and outer subpopulations, as MP clusters are fainter than their MR counterparts and the inner clusters are brighter than the outer ones, which confirm previous results. The NIR colors of the GC candidates are on average redder than those of the confirmed GCs, which leads to an obscure bimodal distribution of color indices. The relation of (V - K-s)(0) and metallicity shows a notable departure from linearity, with a shallower slope toward the redder end. The color magnitude diagram (CMD) and color-color diagram show that many GC candidates are located out of the evolutionary tracks, suggesting that some of them may be false M31 GC candidates. The CMD also shows that the initial mass function of M31 GCs covers a large range, and the majority of the clusters have initial masses between 10(3) and 10(6) M-circle dot. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000338405900004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6605]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Song,Ma, Jun,Wu, Zhenyu,et al. NEW 2MASS NEAR-INFRARED PHOTOMETRY FOR GLOBULAR CLUSTERS IN M31[J]. ASTRONOMICAL JOURNAL,2014,148(1). |
| APA | Wang, Song,Ma, Jun,Wu, Zhenyu,&Zhou, Xu.(2014).NEW 2MASS NEAR-INFRARED PHOTOMETRY FOR GLOBULAR CLUSTERS IN M31.ASTRONOMICAL JOURNAL,148(1). |
| MLA | Wang, Song,et al."NEW 2MASS NEAR-INFRARED PHOTOMETRY FOR GLOBULAR CLUSTERS IN M31".ASTRONOMICAL JOURNAL 148.1(2014). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
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。