搜索结果: 1-9 共查到“天体物理学 mass function”相关记录9条 . 查询时间(0.125 秒)
Using Dark Matter Haloes to Learn about Cosmic Acceleration: A New Proposal for a Universal Mass Function
Dark Matter Haloes Cosmic Acceleration
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2011/1/11
Structure formation provides a strong test of any cosmic acceleration model because a successful dark energy model must not inhibit {\black or overpredict} the development of observed large-scale stru...
Stellar and substellar mass function of the young open cluster candidates Alessi 5 and beta Monocerotis
Stellar substellar mass young open cluster candidates beta Monocerotis
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2010/11/10
Although the stellar and substellar populations have been studied in various young and old open clusters, additional studies in clusters in the age range from 5 to 100Myr is crucial (e.g. to give more...
Theories of the initial mass function
STARS: formation ISM clouds gravitation turbulence
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2010/11/15
We review the various theories which have been proposed along the years to explain the origin of the stellar initial mass function. We pay particular attention to four models, namely
the competitive ...
Star formation: statistical measure of the correlation between the prestellar core mass function and the stellar initial mass function
stars formation — stars luminosity function mass function — ISM clouds
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2010/11/11
We present a simple statistical analysis of recent numerical simulations exploring the correlation between the core mass function obtained from the fragmentation of a molecular cloud and the stellar m...
Spectral Energy Distribution of z>1 Type Ia Supernova Hosts in GOODS: Constraints on Evolutionary Delay and the Initial Mass Function
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2011/1/6
We identify a sample of 22 host galaxies of Type Ia Supernovae (SNe Ia) at redshifts 0.95scovered in the Hubble Space Telescope (HST) observations of the Great Observatories Origins Deep Surv...
Colour-magnitude diagrams, probabilistic synthesis models and the upper mass limit of the initial mass function
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2011/1/5
We present the underlying relations between colour-magnitude diagrams (CMDs) and synthesis models through the use of stellar luminosity distribution func- tions. CMDs studies make a direct use of the ...
An Initial Mass Function for Individual Stars in Galactic Disks: I. Constraining the Shape of the IMF
Galaxy Astrophysics (astro-ph.GA)
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2010/12/29
We derive a semi-empirical galactic initial mass function (IMF) from observational constraints. We assume that the star formation rate in a galaxy can be expressed as the product of the IMF, $\psi (m)...
Stellar and substellar initial mass function: a model that implements gravoturbulent fragmentation and accretion
Solar and Stellar Astrophysics (astro-ph.SR) Galaxy Astrophysics (astro-ph.GA)
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2010/12/28
In this work, we derive the stellar initial mass function (IMF) from the superposition of mass distributions of dense cores, generated through gravoturbulent fragmentation of unstable clumps in molecu...
The Initial Mass Function and Young Brown Dwarf Candidates in NGC 2264. IV. The Initial Mass Function and Star Formation History
Solar and Stellar Astrophysics (astro-ph.SR)
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2010/12/24
We have studied the star formation history and the initial mass function (IMF) using the age and mass derived from spectral energy distribution (SED) fitting and from color-magnitude diagrams. We also...