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Astronomical & Astrophysical Transactions, 2002
A model of dynamical and chemical evolution of spherical and disk galaxies are discussed. The star formation rate in the model is regulated through ionization of the interstellar hydrogen by massive O,B stars. The volume of a galaxy is determined by the condition of equilibrium between collisional dissipation of turbulent energy of interstellar gas and
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A model of dynamical and chemical evolution of spherical and disk galaxies are discussed. The star formation rate in the model is regulated through ionization of the interstellar hydrogen by massive O,B stars. The volume of a galaxy is determined by the condition of equilibrium between collisional dissipation of turbulent energy of interstellar gas and
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Inefficient star formation in extremely metal poor galaxies
Nature, 2014The first galaxies contain stars born out of gas with few or no ‘metals’ (that is, elements heavier than helium). The lack of metals is expected to inhibit efficient gas cooling and star formation, but this effect has yet to be observed in galaxies with ...
Yong Shi +7 more
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Star Formation in Star Burst Galaxies
1990The present contribution does not aim at reviewing the subject, but rather intends to present some specific observational and theoretical results. For a summary on the topic of star bursts I may refer the reader to the almost up-to-date review papers by Scalo (1987) and Telesco (1988).
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History of Star Formation in Normal Galaxies
1989Medium resolution spectroscopic observations have been obtained for the brighter galaxies in 6 clusters covering the redshift range 0.18 ≤ z ≤ 0.39. These observations have been analysed by an evolutionary synthesis technique tied to the VandenBerg isochrone scale, to determine the trends with redshift of the stellar age and metallicity distributions ...
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Molecular Gas and Star Formation in Galaxies
1997Using the 14m millimeter telescope of the Five College Radio Astronomy Observatory (HPBW=45″), we have observed the CO J=l-0 emission at 1412 positions in 300 galaxies. These observations, which comprise the FCRAO Extragalactic CO Survey, are the most extensive and uniform database on the content and large-scale distribution of molecular gas content in
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Galaxy‐galaxy interactions as triggers of star formation
Astronomische Nachrichten, 2009AbstractGalaxy‐galaxy interactions represent the main physical processes that trigger substantial star formation in galaxies. In order to study the galaxy interactions effects on color and morphology of the galaxies in the fields of two radio galaxies at z ∼ 1, we combined optical‐NIR photometry and HST/WFPC2 morphology data from the Stanford et al ...
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Star Formation in Ring Galaxies
2002We present an analysis of the star formation rate (SFR) in ring galaxies using Hα imaging. Global SFRs calculated from Hα and IRAS data are moderate, but the median Hα+[NII] equivalent width is higher compared to that of normal galaxies, suggesting enhancement in SFRs in ring galaxies.
Y. D. Mayya, R. Romano
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From star formation to galaxy formation
2008Current scenarios for the large-scale structure of the universe lead to rather precise predictions for the structure and evolution of primeval galaxies. These scenarios are reviewed, and models of protogalaxies are described. I discuss the origin of the first stars, and the chemical evolution of galaxies.
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