Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions
نویسندگان
چکیده
منابع مشابه
The Stellar Initial Mass Function in the Galactic Center
Massive stars define the upper limits of the star formation process, dominate the energetics of their local environs, and significantly affect the chemical evolution of galaxies. Their role in starburst galaxies and the early Universe is likely to be important, but we still do not know the maximum mass that a star can possess, i.e.“the upper mass cutoff.” I will discuss results from a program t...
متن کاملConstraints on the Stellar Mass Function from Stellar Dynamics at the Galactic Center
We consider the dynamical evolution of a disk of stars orbiting a central black hole. In particular, we focus on the effect of the stellar mass function on the evolution of the disk, using both analytic arguments and numerical simulations. We apply our model to the ring of massive stars at ≃ 0.1pc from the Galactic Center, assuming that the stars formed in a cold, circular disk, and find that o...
متن کاملGalactic Stellar and Substellar Initial Mass Function
We review recent determinations of the present day mass function (PDMF) and initial mass functions (IMF) in various components of the Galaxy, disk, spheroid, young and globular clusters and in conditions characteristic of early star formation. As a general feature, the IMF is found to depend weakly on the environment and to be well described by a power-law form for m & 1M⊙ and a lognormal form ...
متن کاملThe Stellar Mass Function
Since the major review by Scalo (1986), significant progress has been achieved in constraining the mass function (MF) of low-mass stars. The break-throughs which today allow a much better understanding of the stellar luminosity function (LF) and the underlying MF are documented here and the resulting MF for Galactic field stars is confronted with microlensing data, the chemical enrichment histo...
متن کاملThe Stellar Initial Mass Function
The current status of both the observational evidence and the theory of the stellar initial mass function (IMF) is reviewed, with particular attention to the two basic, apparently universal features shown by all observations of nearby stellar systems: (1) a characteristic stellar mass of the order of one solar mass, and (2) a power-law decline of the IMF at large masses similar to the original ...
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ژورنال
عنوان ژورنال: Advances in Astronomy
سال: 2011
ISSN: 1687-7969,1687-7977
DOI: 10.1155/2011/174105