PMO OpenIR  > 分子云与恒星形成研究团组
Near infrared observations of the star formation region GGD12-15
Fang, M; Yao, YQ
2004-07-01
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
ISSN0275-1062
Volume28Issue:3Pages:308-322
AbstractNear infrared imaging observations in JHK broad bands and H-2 nu=1-0 S(I) narrow band of the star formation region GGD12-15 are presented in this article. The images reveal young compact infrared clusters and infrared nebulae in association with infrared sources, as well as outflow activities characterized by H-2 emission knots. Most of the infrared point sources are invisible in the optical wave band. The JHK' photometric results of 76 infrared point sources contain 32 with infrared excess, and 5 with the characteristics of protostars, indicating very active star formation activities in the molecular clouds. Massive stars (defined as those with spectral types earlier than 138) account for similar to 10 - 26 per cent of all stars of the clusters. The K' magnitude distribution of GGD12-15 peaks at 15.0 mag, and spreads broadly from 13.0 mag to 16.0 mag. The peak of the [H-K'] color distribution occurs at similar to0.7 mag, above which the redder components of the cluster make up 70 per cent of the total. The newly-discovered H-2 emission knots are concentrated in the central area. of the clusters, and the spatial distribution has obvious relation to violent star formation activities. Five of the emission knots are located in the central part of the molecular outflow, indicating that they may have been excited by the same source as the molecular outflow.
KeywordInfrared : Stars Galaxy : Open Clusters And Associations : Ggd12-15-stars : Formation
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.chinastron.2004.07.006
WOS KeywordH-II REGIONS ; MOLECULAR OUTFLOWS ; INTRINSIC COLORS ; RADIO-SOURCES ; YOUNG STARS ; GGD 12-15 ; MASS ; PHOTOMETRY ; OBJECTS ; CLUSTER
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000223946500007
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7703
Collection分子云与恒星形成研究团组
AffiliationChinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Fang, M,Yao, YQ. Near infrared observations of the star formation region GGD12-15[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2004,28(3):308-322.
APA Fang, M,&Yao, YQ.(2004).Near infrared observations of the star formation region GGD12-15.CHINESE ASTRONOMY AND ASTROPHYSICS,28(3),308-322.
MLA Fang, M,et al."Near infrared observations of the star formation region GGD12-15".CHINESE ASTRONOMY AND ASTROPHYSICS 28.3(2004):308-322.
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