The Episodic Star Formation History of Low Surface Brightness Galaxies

Details The Episodic Star Formation History of Low Surface Brightness Galaxies The Episodic Star Formation History of Low Surface Brightness Galaxies

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1240...99k&link_type=abstract

HUNTING FOR THE DARK: THE HIDDEN SIDE OF GALAXY FORMATION. Edited by Victor P. Debattista and Cristina C. Popescu AIP Conferen

Physics

Star Formation, Galaxies, Brightness, Stellar Mass, Stellar Size, Star Formation, Origin, Formation, Evolution, Age, And Star Formation, Magnitudes And Colors, Luminosities, Masses, Stellar Content And Populations, Radii, Morphology And Overall Structure

Scientific paper

We investigate correlations between the gas mass fraction of low surface brightness galaxies (LSBGs) and various evolutionary parameters of them. We have obtained near-infrared broadband photometry and Hα photometry of a large sample of LSBGs to measure the current and the time-averaged SFR in order to constrain their star formation histories (SFHs). The current SFRs of LSBGs generally are higher than their past SFRs while galaxies with large reservoirs of gas have relatively high current SFRs. We find a strong correlation between the ratio of current to past average SFR and the gas mass fraction. We look into various possible star forming scenarios for LSBGs.

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