NAOC Open IR  > 光学天文研究部
AN UPDATED CATALOG OF M31 GLOBULAR-LIKE CLUSTERS: UBVRI PHOTOMETRY, AGES, AND MASSES
Fan, Zhou1; de Grijs, Richard2; Zhou, Xu1
2010-12-01
Source PublicationASTROPHYSICAL JOURNAL
Volume725Issue:1Pages:200-213
AbstractWe present an updated UBVRI photometric catalog containing 970 objects in the field of M31, selected from the Revised Bologna Catalog (RBC v. 4.0), including 965, 967, 965, 953, and 827 sources in the individual UBVRI bands, respectively, of which 205, 123, 14, 126, and 109 objects do not have previously published photometry. Photometry is performed using archival images from the Local Group Galaxies Survey, which covers 2.2 deg(2) along the major axis of M31. Detailed comparisons show that our photometry is fully consistent with previous measurements in all filters. We focus on 445 confirmed "globular-like" clusters and candidates, comprising typical globular and young massive clusters. The ages and masses of these objects are derived by comparing their observed spectral-energy distributions with simple stellar population synthesis. Approximately half of the clusters are younger than 2 Gyr, suggesting that there has been significant recent active star formation in M31, which is consistent with previous results. We note that clusters in the halo (r(projected) > 30 kpc) are composed of two different components: older clusters with ages >10 Gyr and younger clusters with ages around 1 Gyr. The spatial distributions show that the young clusters (<2 Gyr) are spatially coincident with the galaxy's disk, including the "10 kpc ring," the " outer ring," and the halo of M31, while the old clusters (>2 Gyr) are spatially correlated with the bulge and halo. We also estimate the masses of the 445 confirmed clusters and candidates in M31 and find that our estimates agree well with previously published values. We find that none of the young disk clusters can survive the inevitable encounters with giant molecular clouds in the galaxy's disk and that they will eventually be disrupted on timescales of a few Gyr. Specifically, young disk clusters with a mass of 10(4) M-circle dot are expected to dissolve within 3.0 Gyr and will, thus, not evolve to become globular clusters.
KeywordCatalogs Galaxies: Individual (M31) Galaxies: Star Clusters: General Globular Clusters: General
DOI10.1088/0004-637X/725/1/200
Indexed BySCI
Language英语
WOS IDWOS:000284576700038
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7744
Collection光学天文研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
2.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Fan, Zhou,de Grijs, Richard,Zhou, Xu. AN UPDATED CATALOG OF M31 GLOBULAR-LIKE CLUSTERS: UBVRI PHOTOMETRY, AGES, AND MASSES[J]. ASTROPHYSICAL JOURNAL,2010,725(1):200-213.
APA Fan, Zhou,de Grijs, Richard,&Zhou, Xu.(2010).AN UPDATED CATALOG OF M31 GLOBULAR-LIKE CLUSTERS: UBVRI PHOTOMETRY, AGES, AND MASSES.ASTROPHYSICAL JOURNAL,725(1),200-213.
MLA Fan, Zhou,et al."AN UPDATED CATALOG OF M31 GLOBULAR-LIKE CLUSTERS: UBVRI PHOTOMETRY, AGES, AND MASSES".ASTROPHYSICAL JOURNAL 725.1(2010):200-213.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Fan, Zhou]'s Articles
[de Grijs, Richard]'s Articles
[Zhou, Xu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Fan, Zhou]'s Articles
[de Grijs, Richard]'s Articles
[Zhou, Xu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Fan, Zhou]'s Articles
[de Grijs, Richard]'s Articles
[Zhou, Xu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.