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Multiwavelength study of nearly face-on low surface brightness disk galaxies
Gao, Dong1,2; Liang, Yan-Chun1; Liu, Shun-Fang1,2; Zhong, Guo-Hu1,2; Chen, Xiao-Yan1,2; Yang, Yan-Bin1,3; Hammer, Francois3; Yang, Guo-Chao1,4; Deng, Li-Cai1; Hu, Jing-Yao1
2010-12-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
Volume10Issue:12Pages:1223-1241
AbstractWe study the ages of a large sample (1802) of nearly face-on disk low surface brightness galaxies (LSBGs) using the evolutionary population synthesis (EPS) model PEGASE with an exponentially decreasing star formation rate to fit their multiwavelength spectral energy distributions (SEDs) from far-ultraviolet (FUV) to near-infrared (NIR) The derived ages of LSBGs are 1-5 Gyr for most of the sample no matter if constant or varying dust extinction is adopted, which are similar to most of the previous studies on smaller samples This means that these LSBGs formed the majority of their stars quite recently However, a small part of the sample (similar to 2%-3%) has larger ages of 5-8 Gyr, meaning their major star forming process may have occurred earlier At the same time, a large sample (5886) of high surface brightness galaxies (HSBGs) are selected and studied using the same method for comparisons The derived ages are 1-5 Gyr for most of the sample (97%) as well These results probably mean that these LSBGs have not much different star formation histories from their HSBGs counterparts However, we should notice that the HSBGs are generally about 0 2 Gyr younger, which could mean that the HSBGs may have undergone more recent star forming activities than the LSBGs
KeywordGalaxies Evolution Galaxies Formation Galaxies Photometry Galaxies Spiral Galaxies Statistics Ultraviolet Galaxies
Indexed BySCI
Language英语
WOS IDWOS:000285676800004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7817
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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Observ Paris, GEPI, F-92195 Meudon, France
4.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China
Recommended Citation
GB/T 7714
Gao, Dong,Liang, Yan-Chun,Liu, Shun-Fang,et al. Multiwavelength study of nearly face-on low surface brightness disk galaxies[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2010,10(12):1223-1241.
APA Gao, Dong.,Liang, Yan-Chun.,Liu, Shun-Fang.,Zhong, Guo-Hu.,Chen, Xiao-Yan.,...&Hu, Jing-Yao.(2010).Multiwavelength study of nearly face-on low surface brightness disk galaxies.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,10(12),1223-1241.
MLA Gao, Dong,et al."Multiwavelength study of nearly face-on low surface brightness disk galaxies".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 10.12(2010):1223-1241.
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