搜索结果: 1-9 共查到“天文学 protostars”相关记录9条 . 查询时间(0.051 秒)
The Spitzer ice legacy: Ice evolution from cores to protostars
Spitzer ice legacy Ice evolution cores protostars
2011/10/20
Ices regulate much of the chemistry during star formation and account for up to 80% of the available oxygen and carbon. In this paper, we use the Spitzer c2d ice survey, complimented with data sets on...
Complex molecules toward low-mass protostars: the Serpens core
Complex molecules low-mass protostars Serpens core
2011/10/20
Gas-phase complex organic molecules are commonly detected toward high-mass protostellar hot cores. Detections toward low-mass protostars and outflows are comparatively rare, and a larger sample is key...
High-Entropy Polar Regions Around the First Protostars
High-Entropy Polar Regions the First Protostars
2011/1/13
We report on simulations of the formation of the first stars in the Universe, where we identify regions of hot atomic gas (fH2 < 10-6) at densities above 10-14 g/cc, heated to temperatures ranging bet...
Forming Protostars in Molecular Clouds with Shocked Envelope Expansion and Core Collapse
ISM clouds — ISM individual (FeSt 1-457)— line: profiles — radiative transfer — stars
2010/11/12
Spectral observations of molecular line profiles reveal the so-called ‘blue profiles’ for
double-peaked molecular lines with stronger blue and weaker red peaks as notable features for star-forming cl...
We explore the origin of a population of distant companions (~1000 - 5000 AU) to Class I protostellar sources recently found by Connelley and co-workers, who noted that the companion fraction diminish...
Near-IR Molecular Hydrogen Emission of Protostars: Probing Circumstellar Environments
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/28
We present new observations of near-infrared molecular hydrogen (H2) line emission in a sample of 18 Class I and flat-spectrum low mass protostars, primarily in the Tau- Aur and {\rho} Oph dark clouds...
Multiple protostars, jets, and the origin of brown Dwarfs
Multiple protostars jets brown Dwarfs
2009/6/17
Multiple protostars, jets, and the origin of brown Dwarfs。
The Spin History of Protostars：Disk Locking, Revisited。
From dust to gas ... and the infrared to the millimetric: Doubly deuterated molecules in protostars
infrared protostars millimetric
2009/6/12
From dust to gas ... and the infrared to the millimetric: Doubly deuterated molecules in protostars。