PMO OpenIR  > 星系中的恒星形成研究团组
Connecting dense gas tracers of star formation in our galaxy to high-z star formation
Wu, JW; Evans, NJ; Gao, Y; Solomon, PM; Shirley, YL; Bout, PAV
2005-12-20
发表期刊ASTROPHYSICAL JOURNAL
ISSN0004-637X
卷号635期号:2页码:L173-L176
摘要Observations have revealed prodigious amounts of star formation in starburst galaxies as traced by dust and molecular emission, even at large redshifts. Recent work shows that for both nearby spiral galaxies and distant starbursts, the global star formation rate, as indicated by the infrared luminosity, has a tight and almost linear correlation with the amount of dense gas as traced by the luminosity of HCN. Our surveys of Galactic dense cores in HCN 1-0 emission show that this correlation continues to a much smaller scale, with nearly the same ratio of infrared luminosity to HCN luminosity found over 7-8 orders of magnitude in, with a lower cutoff L(IR) around 10(4.5) L(circle dot) of infrared luminosity. The linear correlation suggests that we may understand distant star, formation in terms of the known properties of local star-forming regions. Both the correlation and the luminosity cutoff can be explained if the basic unit of star formation in galaxies is a dense core, similar to those studied in our Galaxy.
文章类型Article
关键词Ism : Molecules Stars : Formation
WOS标题词Science & Technology ; Physical Sciences
学科领域Astronomy & Astrophysics
关键词[WOS]ULTRALUMINOUS INFRARED GALAXIES ; HIGH-REDSHIFT ; MOLECULAR CLOUDS ; FORMATION RATES ; MASSIVE STARS ; WATER MASERS ; REGIONS ; SAMPLE ; CORES ; LUMINOSITY
收录类别SCI
语种英语
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000234182500016
引用统计
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/4164
专题星系中的恒星形成研究团组
作者单位1.Univ Texas, Dept Astron, Austin, TX 78712 USA
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
3.SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11974 USA
4.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
5.Natl Radio Astron Observ, Charlottesville, VA 22903 USA
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Wu, JW,Evans, NJ,Gao, Y,et al. Connecting dense gas tracers of star formation in our galaxy to high-z star formation[J]. ASTROPHYSICAL JOURNAL,2005,635(2):L173-L176.
APA Wu, JW,Evans, NJ,Gao, Y,Solomon, PM,Shirley, YL,&Bout, PAV.(2005).Connecting dense gas tracers of star formation in our galaxy to high-z star formation.ASTROPHYSICAL JOURNAL,635(2),L173-L176.
MLA Wu, JW,et al."Connecting dense gas tracers of star formation in our galaxy to high-z star formation".ASTROPHYSICAL JOURNAL 635.2(2005):L173-L176.
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