The initial mass function and history of the star-formation rate in star-forming complexes in galaxies

2004 ◽  
Vol 48 (11) ◽  
pp. 909-920
Author(s):  
F. Kh. Sakhibov ◽  
M. A. Smirnov
Keyword(s):  
Star Formation ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Mass Function ◽  
Initial Mass Function ◽  
Initial Mass ◽  
Star Forming ◽  
History Of

scholarly journals Modes of star formation from Herschel

2012 ◽  
Vol 8 (S292) ◽  
pp. 87-90
Author(s):  
L. Testi ◽  
E. Bressert ◽  
S. Longmore
Keyword(s):  
Star Formation ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Mass Function ◽  
Initial Mass Function ◽  
Dense Gas ◽  
Nearby Star ◽  
Star Forming ◽  
Star Forming Regions ◽  
Massive Cluster

AbstractWe summarize some of the results obtained from Herschel surveys of nearby star forming regions and the Galactic plane. We show that in the nearby star forming regions the starless core spatial surface density distribution is very similar to that of the young stellar objects. This, taken together with the similarity between the core mass function and the initial mass function for stars and the relationship between the amount of dense gas and star formation rate, suggest that the cloud fragmentation process defines the global outcome of star formation. This “simple” view of star formation may not hold on all scales. In particular dynamical interactions are expected to become important at the conditions required to form young massive clusters. We describe the successes of a simple criterion to identify young massive cluster precursors in our Galaxy based on (sub-)millimeter wide area surveys. We further show that in the location of our Galaxy where the best candidate for a precursor of a young massive cluster is found, the “simple” scaling relationship between dense gas and star formation rate appear to break down. We suggest that in regions where the conditions approach those of the central molecular zone of our Galaxy it may be necessary to revise the scaling laws for star formation.

scholarly journals Studying Young Stars with Large Spectroscopic Surveys

2015 ◽  
Vol 10 (S314) ◽  
pp. 276-279
Author(s):  
Sarah L. Martell
Keyword(s):  
Star Formation ◽  
Formation Rate ◽  
Mass Function ◽  
Young Star ◽  
Initial Mass Function ◽  
Young Stars ◽  
Star Forming ◽  
Star Forming Regions ◽  
Star Studies ◽  
History Of

AbstractGalactic archaeology is the study of the history of star formation and chemical evolution in the Milky Way, based on present-day stellar populations. Studies of young stars are a key anchor point for Galactic archaeology, since quantities like the initial mass function and the star formation rate can be studied directly in young clusters and star forming regions. Conversely, massive spectroscopic Galactic archaeology surveys can be used as a data source for young star studies.

scholarly journals A New Theory of Star Formation: Analytical Mass Function and Star Formation Rate

1987 ◽  
Vol 115 ◽  
pp. 442-443
Author(s):  
A. Di Fazio
Keyword(s):  
Mass Spectrum ◽  
Star Formation ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Mass Function ◽  
Initial Mass Function ◽  
Time Dependent ◽  
Initial Mass ◽  
Fragmentation Rate

An analytical, theoretical, time-dependent initial mass function is derived for the objects created in the fragmentation of a gravitationally unstable gas protocloud. The mass spectrum depends on the chemical-dynamical-radiative evolution of the protocloud and it peaks at a mass slightly greater than the minimum Jeans mass attained throughout the evolution. A fragmentation rate mass spectrum is also analytically derived.

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