THE MYSTERIOUS SICKLE OBJECT IN THE CARINA NEBULA: A STELLAR WIND INDUCED BOW SHOCK GRAZING A CLUMP?
THE MYSTERIOUS SICKLE OBJECT IN THE CARINA NEBULA: A STELLAR WIND INDUCED BOW SHOCK GRAZING A CLUMP?
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船底座星云中神秘的镰状天体:恒星风引起的弓形激波擦过一团?
DOI:
10.1088/0004-637x/769/2/139
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
A. Burkert
中科院分区:
文献类型:
--
作者:
J. Ngoumou;Th. Preibisch;Th. Ratzka;A. Burkert
Optical and near-infrared images of the Carina Nebula show a peculiar arc-shaped feature, which we call the" Sickle," next to the B-type star Trumpler 14 MJ 218. We use multi-wavelength observations to explore and constrain the nature and origin of the nebulosity. Using submillimeter data from APEX/LABOCA as well as Herschel far-infrared maps, we discovered a dense, compact clump with a mass of∼ 40 M☉ located close to the apex of the Sickle. We investigate how the B star MJ 218, the Sickle, and the clump are related. Our numerical simulations show that, in principle, a B-type star located near the edge of a clump can produce a crescent-shaped wind shock front, similar to the observed morphology. However, the observed proper motion of MJ 218 suggests that the star moves with high velocity (∼ 100 km s− 1) through the ambient interstellar gas. We argue that the star is just about to graze along the surface of the clump, and the Sickle is a bow shock induced by the stellar wind, as the object moves supersonically through the density gradient in the envelope of the clump.
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DOI:
10.1086/308576
发表时间:
2000
期刊:
The Astrophysical Journal
影响因子:
--
作者:
F. Wilkin
通讯作者:
F. Wilkin
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
E. Ntormousi;A. Burkert;K. Fierlinger;F. Heitsch
通讯作者:
F. Heitsch
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
T. Preibisch;T. Ratzka;B. Kuderna;H. Ohlendorf;R. R. King;S. Hodgkin;M. Irwin;J. Lewis;M. McCaughrean;H. Zinnecker
通讯作者:
H. Zinnecker
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
M. Tapia;M. Roth;J. Bohigas;P. Persi
通讯作者:
P. Persi
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
V. Gvaramadze;S. Röser;Ralf;E. Schilbach
通讯作者:
E. Schilbach