搜索结果: 1-10 共查到“天文学 Molecules”相关记录10条 . 查询时间(0.105 秒)
Much of the carbon in space is believed to exist in the form of large molecules called polycyclic aromatic hydrocarbons, or PAHs. Since the 1980s, evidence has indicated that these molecules are abund...
Map of Mysterious Molecules In Our Galaxy Sheds New Light on Century-Old Puzzle（图）
Map of Mysterious Molecules Our Galaxy Light on Century-Old Puzzle
2015/1/20
The map, which can be viewed at http://is.gd/dibmap, was unveiled Jan. 8 at the 225th meeting of the American Astronomical Society in Seattle. The map will be discussed at a 2:15 p.m. PST press confer...
The first molecules detected at infrared wavelengths in the ejecta of a Type II supernova, namely SN1987A, consisted of CO and SiO. Since then, confirmation of the formation of these two species in se...
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...
Interstellar ices as witnesses of star formation: selective deuteration of water and organic molecules unveiled
dust, extinction - ISM: abundances - ISM: molecules - stars: formation
2011/9/30
The environments where stars are born contain gas and dust grains covered by icy mantles. As the star forms and heats up its surroundings, the ices evaporate which leads to a very complex chemistry wi...
Chemical history of molecules in circumstellar disks
astrochemistry – stars: formation – circumstellar matter – planetary systems: pro- toplanetary disks – molecular processes
2011/10/8
The chemical composition of a protoplanetary disk is determined not only by in situ chemical processes during the disk phase, but also by the history of the gas and dust before it accreted from the na...
Photochemistry in the inner layers of clumpy circumstellar envelopes: formation of water in C-rich objects and of C-bearing molecules in O-rich objects
Galaxy Astrophysics (astro-ph.GA)
2010/12/28
A mechanism based on the penetration of interstellar ultraviolet photons into the inner layers of clumpy circumstellar envelopes around AGB stars is proposed to explain the non-equilibrium chemistry o...
NASA Instruments Reveal Water Molecules on Lunar Surface
NASA Instruments Water Molecules Lunar Surface
2009/9/28
NASA scientists have discovered water molecules in the polar regions of the moon. Instruments aboard three separate spacecraft revealed water molecules in amounts that are greater than predicted, but ...
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。
ASTROPHYSICALLY USEFUL PARAMETERS FOR CERTAIN BAND SYSTEMS OF BEH, BED AND BET MOLECULES
Molecular data-Methods numerical-Sun abundances
2009/2/18
ASTROPHYSICALLY USEFUL PARAMETERS FOR CERTAIN BAND SYSTEMS OF BEH, BED AND BET MOLECULES。