The past star-formation rate and the initial mass-function in the solar neighbourhood

Details The past star-formation rate and the initial mass-function in the solar neighbourhood The past star-formation rate and the initial mass-function in the solar neighbourhood

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.128..253m&link_type=abstract

(Universitaets-Sternwarte Jena, Jena Workshop on the Role of Dust in Dense Regions of Interstellar Matter, Georgenthal, East Ger

Astronomy and Astrophysics

Astrophysics

Solar System, Star Formation, Star Formation Rate, Stellar Mass, Metallicity, Milky Way Galaxy, Star Distribution, Stellar Motions

Scientific paper

Using the present-day mass function (PDMF) of the main-sequence field stars and their velocity distribution as the constraints, the history of the star-formation rate (SFR) is discussed, assuming first a time-independent initial mas function (IMF). Then, the history of the SFR assuming a time-dependent IMF, as suggested by Terlevich and Melnick (1983), is constructed. It is concluded that, theoretically, two possibilities exist for the IMF: a time-independent log-normal distribution, or a Terlevich-Melnick-like power law with an exponent proportional to log of the heavy element abundance Z.

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