منابع مشابه
Critical Accretion Rate for Triggered Star Formation
We have reexamined the similarity solution for a self-gravitating isothermal gas sphere and examined implication to star formation in a turbulent cloud. When parameters are adequately chosen, the similarity solution expresses an accreting isothermal gas sphere bounded by a spherical shock wave. The mass and radius of the sphere increases in proportion to the time, while the central density decr...
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We present our diagnosis of the role that massive stars play in the formation of lowand intermediate-mass stars in OB associations (the λ Ori region, the OriOB1, and LacOB1 associations). We find that the classical T Tauri stars and Herbig Ae/Be stars tend to line up between luminous O stars and brightrimmed or comet-shaped clouds; the closer to a cloud the progressively younger they are. Our p...
متن کاملRadio Triggered Star Formation in Cooling Flows
The giant galaxies located at the centers of cluster cooling flows are frequently sites of vigorous star formation. In some instances, star formation appears to have been triggered by the galaxy’s radio source. The colors and spectral indices of the young populations are generally consistent with short duration bursts or continuous star formation for durations ≪ 1 Gyr, which is less than the pr...
متن کاملTriggered star formation in the Magellanic Clouds
We discuss how tidal interaction between the Large Magellanic Cloud (LMC), the Small Magellanic Cloud (SMC), and the Galaxy triggers galaxy-wide star formation in the Clouds for the last ∼ 0.2 Gyr based on our chemodynamical simulations on the Clouds. Our simulations demonstrate that the tidal interaction induces the formation of asymmetric spiral arms with high gas densities and consequently t...
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The evolution of a gas shell, swept by the supernova remnant of a massive first generation star, is studied with H2 and HD chemistry taken into account and with use of a semi-analytical approximation to the dynamics. When a first-generation star, formed in a parent pregalactic cloud, explodes as a supernova with explosion energy in the range of 10erg− 10 erg at redshifts of z = 10− 50, H2 and H...
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ژورنال
عنوان ژورنال: EAS Publications Series
سال: 2011
ISSN: 1633-4760,1638-1963
DOI: 10.1051/eas/1151004