Star Formation and Gas Accretion in Nearby Galaxies
arXiv:1608.06735 · doi:10.1093/mnras/stw2118
Abstract
In order to quantify the relationship between gas accretion and star formation, we analyse a sample of 29 nearby galaxies from the WHISP survey which contains galaxies with and without evidence for recent gas accretion. We compare combined radial profiles of FUV (GALEX) and IR 24 μm (Spitzer) characterizing distributions of recent star formation with radial profiles of CO (IRAM, BIMA, or CARMA) and HI (WSRT) tracing molecular and atomic gas contents to examine star formation efficiencies in symmetric (quiescent), asymmetric (accreting), and interacting (tidally disturbed) galaxies. In addition, we investigate the relationship between star formation rate and HI in the outer discs for the three groups of galaxies. We confirm the general relationship between gas surface density and star formation surface density, but do not find a significant difference between the three groups of galaxies.
Accepted for publication in MNRAS, 18 pages, 9 figures, 1 table
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Cited by in corpus (5)
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- Volumetric Star Formation Prescriptions in Vertically Resolved Edge-on Galaxies
- Revealing the Double Nucleus of NGC 4490
- The Volumetric Star Formation Law in the Almost Edge-on Galaxy NGC 4302 Revealed by ALMA