منابع مشابه
The 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 ...
متن کاملI. the Stellar Initial Mass Function
o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o oo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o We summarize recent bservati nal and the retical pr gress aimed at understanding the rigin f the stellar initial mass functi n (IMF), with specific f cus n galactic star-f rming regi ns. We synthesize data fr m vari us eff rts t determine the IMF in very y...
متن کاملThe Stellar Initial Mass Function and Beyond
A brief review is given of the basic observed features of the stellar IMF, and also of some of the theoretical ideas and simulations that may help to explain these features. The characteristic stellar mass of order one solar mass may derive from the typical masses of the observed starforming clumps in molecular clouds, and the typical clump mass may in turn be determined mainly by the Jeans mas...
متن کاملUnderstanding the Stellar Initial Mass Function
The essential features of the stellar Initial Mass Function are, rather generally, (1) a peak at mass of a few tenths of a solar mass, and (2) a power-law tail toward higher masses that is similar to the original Salpeter function. Recent work suggests that the IMF peak reflects a preferred scale of fragmentation associated with the transition from a cooling phase of collapse at low densities t...
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 ...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2006
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921307007594