搜索结果: 1-15 共查到“天体物理学 Cloud”相关记录38条 . 查询时间(0.035 秒)
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,...
The XMM-Newton survey of the Small Magellanic Cloud: A new X-ray view of the symbiotic binary SMC3
The XMM-Newton survey the Small Magellanic Cloud
2011/1/11
The XMM-Newton survey of the Small Magellanic Cloud (SMC) was performed to study the population of X-ray sources in this neighbouring galaxy. During one of the observations, the symbiotic binary SMC3 ...
The XMM-Newton survey of the Small Magellanic Cloud: Discovery of the 11.866 s Be/X-ray binary pulsar XMMUJ004814.0-732204 (SXP11.87)
The XMM-Newton survey the Small Magellanic Cloud
2011/1/11
One of the goals of the XMM-Newton survey of the Small Magellanic Cloud is the study of the Be/X-ray binary population. During one of our first survey observations a bright new transient - XMMUJ004814...
SMC SMP 24: A newly radio-detected planetary nebula in the small magellanic cloud
SMC SMP 24 newly radio-detected planetary nebula
2011/1/10
In this paper we report new radio-continuum detection of an extragalactic PN: SMC SMP 24. We show the radio-continuum image of this PN and present the measured radio data. The newly reduced radio obse...
The Application of Cloud Computing to Astronomy: A Study of Cost and Performance
Cloud Computing to Astronomy Cost and Performance
2011/1/10
Cloud computing is a powerful new technology that is widely used in the business world. Recently, we have been investigating the benefits it offers to scientific computing. We have used three workflow...
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...
The Global Gas and Dust budge of the Large Magellanic Cloud --- Importance of Asymptotic Giant Branch stars
The Global Gas Large Magellanic Cloud
2010/11/11
It is still an unresolved problemhowmuch AGB stars can contribute to the overall gas and dust enrichment processes in the interstellar medium within galaxies.We start tackling this problem, by using o...
Dust at sub-solar metallicity: the case of post-AGB stars in the Large Magellanic Cloud
Dust at sub-solar metallicity Large Magellanic Cloud
2010/11/11
Low- and intermediate-mass stars are one of the important dust sources in the interstellar medium (ISM) of galaxies. The compositions of dust ejected from these stars are likely to affect those in the...
Venus wind map at cloud top level with the MTR/THEMIS visible spectrometer. I. Instrumental performance and first results
Venus Wind Clouds Visible Spectrometry
2010/11/15
Solar light gets scattered at cloud top level in Venus’ atmosphere, in the visible range, which corresponds to the altitude of 67 km. We present Doppler velocity measurements performed with the high r...
Tails of the Unexpected: The Interaction of an Isothermal Shell with a Cloud
hydrodynamics – ISM bubbles – planetary nebulae general – planetary nebulae individual NGC 7293
2010/11/15
A new mechanism for the formation of cometary tails behind dense clouds or globules is discussed. Numerical hydrodynamical models show that when a dense shell of swept-up matter overruns a cloud, mate...
The star formation history of the Large Magellanic Cloud as seen by star clusters and stars
galaxies evolution - galaxies: individual galaxies stellar content - galaxies star clusters
2010/11/10
The aim of this work is to test to what extent the star cluster population of a galaxy can be
utilised to constrain or estimate the star formation history, with the Large Magellanic Cloud as our test...
Survey of O VI absorption in the Large Magellanic Cloud
galaxies ISM – ISM structure – ISM atoms – galaxies individual Large Magellanic Cloud – ultraviolet ISM
2010/11/10
We present a survey of interstellar O VI absorption in the Large Magellanic Cloud (LMC) towards 70 lines of sight based on Far Ultraviolet Spectroscopic Explorer(FUSE) observations. The survey covers ...
Effects of Initial Condition and Cloud Density on the Composition of the Grain Mantle
Molecular clouds ISM abundances molecules chemical evo-lution Monte-Carlo simulations
2010/11/15
Evolution of grain mantles in various interstellar environment is studied. We concentrate mainly on water, methanol, carbon di-oxide, which constitute nearly 90% of the grain mantle. We investigate ho...