Can Stellar Yields Accurately Constrain the Upper Limit to the Initial Mass Function?
نویسندگان
چکیده
منابع مشابه
Can Stellar Yields Accurately Constrain the Upper Limit to the Initial Mass Function?
Recent determinations of the upper mass limit to the local initial mass function (IMF) claim a value of mU = 50±10 M⊙, based upon direct comparisons of the observed oxygen and iron abundances in metal-poor stars with the predicted stellar yields from Type II supernovae (SNe). An unappreciated uncertainty in these analyses is the input physics intrinsic to each SNe grid, and its effect upon stel...
متن کاملThe Stellar Upper Mass Limit Preserved
This article is based on data gathered with three facilities: the NASA/ESA Hubble Space Telescope (HST), the 6.5 m Magellan Telescopes at Las Campanas Observatory (LCO), and the 2.15-m J. Sahade telescope at Complejo Astronómico El Leoncito (CASLEO). The HST observations are associated with GO program 10602. HST is controlled from the Space Telescope Science Institute, which is operated by the ...
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 ...
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...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1998
ISSN: 0004-637X,1538-4357
DOI: 10.1086/305832