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The Evolution of the Star Formation Rate in Galaxies
Astrophysics and Space Science, 2001The aim of this work is to provide clues for the understanding of the star formation history of the universe. We study the process of star formation in galactic objects in hierarchical clustering scenarios using hydrodynamical cosmological simulations of standard Cold Dark Matter Universe. We estimate the specific star formation rate (sSFR) of galactic
Hernán Muriel +4 more
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Formation Rate of Triple Stars Relative to Double Stars
Astrophysics and Space Science, 1995A series of our and McAlister et al.’s speckle observations of spectroscopic binaries show that certain fractions of them are triple systems. A typical configuration of those systems is that of two stars separated by about 0.1 AU with a third component in an orbit at a distance about 10 AU from the central stars.
Syuzo Isobe, Mikinori Ni-Ino
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On the Calibration of Star Formation Rates
2002A central problem in the “Madau-Lilly” diagram, i.e. the evolution of the Star Formation Rates (SFR) with redshift, is that the SFR is estimated using several different estimators at different redshift ranges that potentially can have systematic differences among them.
Roberto Terlevich +2 more
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Canadian Journal of Physics, 2013
The primary goal of this study is to explore the dependence of the clustering properties of galaxies on star formation rate (SFR) and specific star formation rate (SSFR). From the main galaxy sample of the Sloan Digital Sky Survey Data Release 7, we construct two volume-limited samples with absolute magnitudes above and below [Formula: see text], and ...
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The primary goal of this study is to explore the dependence of the clustering properties of galaxies on star formation rate (SFR) and specific star formation rate (SSFR). From the main galaxy sample of the Sloan Digital Sky Survey Data Release 7, we construct two volume-limited samples with absolute magnitudes above and below [Formula: see text], and ...
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2005
I review the basic modes of quiescent star formation and starbursts. Star-formation efficiency is the key to reconciling hierarchical galaxy formation with observed galaxy colours and counts. A unified viewpoint is that all star formation is, at some level, bursty. This is motivated both by local observations and by theory.
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I review the basic modes of quiescent star formation and starbursts. Star-formation efficiency is the key to reconciling hierarchical galaxy formation with observed galaxy colours and counts. A unified viewpoint is that all star formation is, at some level, bursty. This is motivated both by local observations and by theory.
openaire +2 more sources