Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543203m&link_type=abstract
American Astronomical Society, AAS Meeting #215, #432.03; Bulletin of the American Astronomical Society, Vol. 42, p.367
Astronomy and Astrophysics
Astronomy
Scientific paper
The star formation law (SFL) is an essential tool for understanding galaxy evolution. However, the star formation process is not well understood and the broadly used Schmidt-Kennicutt SFL is based on a biased sample of bright nearby spirals. Here we derive a star formation recipe based on the THINGS SFL of Leroy et. al (2008) and Bigiel et al.(2009), which can predict the star formation rate using the rotation curve and stellar mass profile as an input. We use optical and radio rotation curves combined with optical broad band images of HI selected galaxies to make predicted star formation profiles using this prescription which are then compared to our UV and H-alpha images from the SINGG and SUNGG surveys. We look at how the predictions compare to the observations in the two different tracers especially in the outer disks which were not accounted for when the THINGS SFL was derived.
Knezek Patricia
Meurer Gerhardt R.
Zheng Zhao
Zwaan Martin
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