Young stellar population of bright-rimmed clouds BRC 5, BRC 7 and BRC 39

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题名:	Young stellar population of bright-rimmed clouds BRC 5, BRC 7 and BRC 39
作者:	陳文屏;Panwar, Neelam;Chen, W. P.;Pandey, A. K.;Samal, M. R.;Ogura, K.;Ojha, D. K.;Jose, J.;Bhatt, B. C.
贡献者:	理學院天文研究所
关键词:	Astrophysics;Census;Clouds;Implosions;Infrared;Massive stars;Sciences of the Universe;Star & galaxy formation;Star formation;Stars;Stellar populations;Ultraviolet astronomy;Ultraviolet radiation
日期:	2014-01-01
上传时间:	2026-04-21 14:25:26 (UTC+8)
出版者:	Oxford University Press;London: Oxford University Press
摘要:	摘要： Bright-rimmed clouds (BRCs), illuminated and shaped by nearby OB stars, are potential sites of recent/ongoing star formation. Here we present an optical and infrared photometric study of three BRCs: BRC 5, BRC 7 and BRC 39 to obtain a census of the young stellar population, thereby inferring the star formation scenario, in these regions. In each BRC, the Class I sources are found to be located mostly near the bright rim or inside the cloud, whereas the Class II sources are preferentially outside, with younger sources closer to the rim. This provides strong support to sequential star formation triggered by radiation-driven implosion due to the ultraviolet radiation. Moreover, each BRC contains a small group of young stars being revealed at its head, as the next-generation stars. In particular, the young stars at the heads of BRC 5 and BRC 7 are found to be intermediate-/high-mass stars, which, under proper conditions, may themselves trigger further star birth, thereby propagating star formation out to long distances. 其他題名： Mon. Not. R. Astron. Soc 出版者： London: Oxford University Press 出版日期： 2014-09-11 出處： Monthly notices of the Royal Astronomical Society, 2014-09, Vol.443 (2), p.1614-1628 資源來源： Alma/SFX Local Collection 版權： 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society 2014 版權： Copyright Oxford University Press, UK Sep 11, 2014 版權： licence_http://creativecommons.org/publicdomain/zero 識別號： ISSN: 0035-8711 識別號： ISSN: 1365-8711 識別號： ISSN: 1365-2966 識別號： EISSN: 1365-2966 識別號： DOI: 10.1093/mnras/stu1244
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