منابع مشابه
Star Formation Efficiencies and Star Cluster Formation
Starbursts produce large numbers of Young Star Clusters (YSCs). Multi-color photometry in combination with a dedicated SED analysis tool allows to derive ages, metallicities, EB−V, and masses including 1σ uncertainties for individual clusters and, hence, mass functions for YSC systems. The mass function, known to be Gaussian for old Globular Cluster (GC) systems, is still controversial for YSC ...
متن کاملStar Formation on the Move?
Recent models of star formation suggest that the mass of a star is largely determined by its history of motion through its natal molecular cloud. Such motions may be observable in the early stages of star formation. We have looked for the relative shifts of line-center velocity in low [CO (1–0) and CO (1–0)] and high [N2H + (1–0)] density tracers toward a sample of 42 low-mass star-forming core...
متن کاملOn star formation rates in dwarf galaxies
We present evolutionary synthesis models of starbursts on top of old stellar populations to investigate in detailed time evolution the relation between Hα luminosity and star formation rate (SFR). The models show that several effects have an impact on the ratio between L(Hα) and SFR. Metallicity different from solar abundance, a time delay between star formation and maximum Hα-luminosity, and a...
متن کاملOn star formation in primordial protoglobular clouds
Using a new physical model for star formation (Padoan 1995) we have tested the possibility that globular clusters (GCs) are formed from primordial mass fluctuations, whose mass scale (10 10 M⊙) is selected out of a CDM spectrum by the mechanism of non-equilibrium formation of H2. We show that such clouds are able to convert about 0.003 of their total mass into a bound system (GC) and about 0.02...
متن کاملStar formation in galaxies and star clusters
This thesis is devoted to star formation from galaxy-scales (≈ 10 000 pc) to sub-star cluster-scales (≈ 0.1 pc). I develop and test a new method to derive star formation histories of Galaxies from their star cluster content, in particular the most massive star clusters. This is followed by an application of this method to the Large Magellanic Cloud, where the results of this new method are conf...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2009
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921310003212