A GLIMPSE of Star Formation in the Giant H ii Region RCW 49
نویسندگان
چکیده
منابع مشابه
Understanding our Origins : Star Formation in H ii Region Environments
Recent analysis of the decay products of short-lived radiounclides (SLRs) in meteorites, in particular the confirmation of the presence of live Fe in the early Solar System, provides unambiguous evidence that the Sun and Solar System formed near a massive star. We consider the question of the formation of low-mass stars in the environments of massive stars, presenting a scenario for the evoluti...
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RCW 38 is a uniquely young (<1 Myr), embedded (AV ∼ 10) stellar cluster surrounding a pair of early O stars (∼O5.5) and is one of the few regions within 2 kpc other than Orion to contain over 1000 members. X-ray and deep near-infrared observations reveal a dense cluster with over 200 X-ray sources and 400 infrared sources embedded in a diffuse hot plasma within a 1 pc diameter. The central O st...
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The concordance model of cosmology and structure formation predicts the formation of isolated very massive stars at high redshifts in dark matter dominated halos of 10 to 10M⊙. These stars photo-ionize their host primordial molecular clouds, expelling all the baryons from their halos. When the stars die, a relic H II region is formed within which large amounts of molecular hydrogen form which w...
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We present the results of 450 and 850 µm continuum mapping of the H II region KR 140 using the SCUBA instrument on the JCMT. KR 140 is a small (5.7 pc diameter) H II region at a distance of 2.3±0.3 kpc. Five of the six IRAS point sources near KR 140 were mapped in this study. Our analysis shows that two of these IRAS sources are embedded late B type stars lying well outside the H II region, two...
متن کاملHigh - resolution radio observations of RCW 49
High-resolution radio continuum observations of the southern H II complex RCW 49 are presented. The observations were carried out with the Molonglo Observatory Synthesis Telescope (MOST) at 0.843 GHz, and the Australia Telescope Compact Array (ATCA) at 1.38 and 2.38 GHz. Two wind-blown shells have been discovered in the core region of RCW 49, the more massive of which surrounds the Westerlund 2...
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ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2004
ISSN: 0067-0049,1538-4365
DOI: 10.1086/422557