搜索结果: 1-15 共查到“天体物理学 Molecular”相关记录55条 . 查询时间(0.406 秒)
Comet 67P/Churyomov-Gerasimenko – arguably the most-studied comet in history – has yielded a cosmic surprise: It emits molecular oxygen drawn from its nucleus.
Galaxy Zoo: Dust and molecular gas in early-type galaxies with prominent dust lanes
galaxies: ISM - galaxies: elliptical and lenticular cD - galaxies: peculiar galaxies: interactions - galaxies: formation - galaxies: evolution
2011/10/17
We study dust and associated molecular gas in 352 nearby early-type galaxies (ETGs) with prominent dust lanes. 65% of these 'dusty ETGs' (D-ETGs) are morphologically disturbed, suggesting a merger ori...
A rotating molecular disk toward IRAS 18162-2048, the exciting source of HH 80-81
rotating molecular exciting source HH 80-81
2011/10/10
We present several molecular line emission arcsec and subarcsec observations obtained with the Submillimeter Array (SMA) in the direction of the massive protostar IRAS 18162-2048, the exciting source ...
The Atlas3D project - X. On the origin of the molecular and ionised gas in early-type galaxies
Atlas3D project - X origin of the molecular ionised gas early-type galaxies
2011/8/24
We make use of interferometric CO and HI observations, and optical integral-field spectroscopy to probe the origin of the molecular and ionised interstellar medium (ISM) in local early-type galaxies (...
Chemical Variation in Molecular Cloud Cores in the Orion A Cloud
Chemical Variation Molecular Cloud Cores the Orion A Cloud
2011/1/10
We have observed molecular cloud cores in the Orion A giant molecular cloud (GMC) in CCS, HC3N, DNC, and HN13C to study their chemical characteristics. We have detected CCS in the Orion A GMC for the ...
On the interaction of a thin, supersonic shell with a molecular cloud
supersonic shell with molecular cloud
2011/1/10
Molecular clouds (MCs) are stellar nurseries, however, formation of stars within MCs depends on the ambient physical conditions. MCs, over a free-fall time are exposed to numerous dynamical phenomena,...
We study the mass-density relationship n m^x in molecular cloud clumps, considering various relations between the gravitational, kinetic, internal and magnetic energy. Clumps are described statistical...
Theory of Feedback in Clusters and Molecular Cloud Turbulence
Feedback in Clusters Molecular Cloud Turbulence
2011/1/11
I review recent numerical and analytical work on the feedback from both low- and high-mass cluster stars into their gasoeus environment. The main conclusions are that i) outflow driving appears capabl...
Molecular environment and thermal X-ray spectroscopy of the semicircular young composite supernova remnant 3C 396
ISM individual (3C 396 G39.2− 0.3) – ISM molecules – supernova remnants
2010/11/15
We have investigated the molecular gas environment of the semicircular composite supernova rem-
nant (SNR) 3C 396 in multiwavelengths and performed a Chandra spatially resolved thermal X-ray
spectro...
Dense Molecular Gas Excitation at High Redshift: Detection of HCO+(J=4-3) Emission in the Cloverleaf Quasar
galaxies active — galaxies starburst — galaxies formation — galaxies
2010/11/10
We report the detection of HCO+(J=4→3) emission in the Cloverleaf Quasar at z=2.56, using
the IRAM Plateau de Bure Interferometer. HCO+ emission is a star formation indicator similar
to HCN, tracing...
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...
Studies of Diffuse Interstellar Bands. V. Pairwise Correlations of Eight Strong DIBs and Neutral Hydrogen, Molecular Hydrogen, and Color Excess
ISM lines and bands − ISM molecules
2010/11/15
We establish correlations between equivalent widths of eight diffuse interstel-lar bands (DIBs), and examine their correlations with atomic hydrogen, molec-ular hydrogen, and EB−V . The DIBs are...
The Relationship Between Molecular Gas and Star Formation in Low-Mass E/S0 Galaxies
Relationship Between Molecular Gas Star Formation
2010/11/11
We consider the relationship between molecular-gas and star-formation sur-face densities in 19 morphologically defined E/S0s with stellar mass . 4 × 1010M⊙, paying particular attention to those found ...
The mass-loss rates and molecular abundances of S-type AGB stars
mass-loss rates molecular abundances of S-type AGB stars
2010/11/12
The S-type stars are believed to have a C/O-ratio close to unity (within a few percent). They are considered to represent an intermediate evolutionary stage as AGB stars evolve from oxygen-rich M-type...
How to use molecular clouds to study the propagation of cosmic rays in the Galaxy
cosmic rays:origin and propagation gamma rays molecular clouds
2010/11/12
Observations of molecular clouds in the gamma ray domain provide us with a tool to study the distribution of cosmic rays in the Galaxy. This is because cosmic rays can penetrate molecular clouds, unde...