Extinction-Corrected Star Formation Rates Using Multiwavelength Tracers

Details Extinction-Corrected Star Formation Rates Using Multiwavelength Tracers Extinction-Corrected Star Formation Rates Using Multiwavelength Tracers

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21332902k&link_type=abstract

American Astronomical Society, AAS Meeting #213, #329.02; Bulletin of the American Astronomical Society, Vol. 41, p.385

Astronomy and Astrophysics

Astronomy

Scientific paper

Dust extinction is the largest source of systematic uncertainty in measurements of star formation rates (SFRs) of galaxies, whether these are based on optical emission-line, ultraviolet, or infrared measurements. In principle the effects of extinction can be removed by combining measurements of the dust-attenuated fluxes of galaxies in the ultraviolet or visible with measurements of the dust emission in the infrared (or via associated radio continuum emission). We explore this approach by combining integrated measurements of two samples of nearby galaxies in the H-alpha and [OII] emission lines along with continuum measurements in the ultraviolet, infrared, and radio, to derive extinction-corrected star formation rates (SFRs). We calibrate a simple energy balance based method that has been applied previously to HII regions in the Spitzer Infrared Nearby Galaxies Survey (SINGS), and extend it to various combinations of ultraviolet, visible, infrared, and radio luminosities. We find that our composite SFRs are in excellent agreement with extinction-corrected SFRs derived from integrated emission-line spectra, over a wide range of SFRs and extinctions. The combination of H-alpha and total infrared luminosities provides the most consistent extinction-corrected SFRs, but alternative combinations using either H-alpha or ultraviolet continuum measurements with monochromatic infrared or radio continuum luminosities perform nearly as well. We assess the precision and systematic reliability of all of these composite methods.

Affiliated with

Also associated with

No associations

Rating

Extinction-Corrected Star Formation Rates Using Multiwavelength Tracers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Extinction-Corrected Star Formation Rates Using Multiwavelength Tracers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extinction-Corrected Star Formation Rates Using Multiwavelength Tracers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1698304