TY - JOUR
T1 - Galaxy And Mass Assembly (GAMA)
T2 - the dependence of star formation on surface brightness in low-redshift galaxies
AU - Phillipps, S.
AU - Bellstedt, S.
AU - Bremer, M. N.
AU - De Propris, R.
AU - James, P. A.
AU - Casura, S.
AU - Liske, J.
AU - Holwerda, B. W.
PY - 2023/2/1
Y1 - 2023/2/1
N2 - The star-formation rate in galaxies is well known to correlate with stellar mass (the 'star-forming main sequence'). Here, we extend this further to explore any additional dependence on galaxy surface brightness, a proxy for stellar mass surface density. We use a large sample of low-redshift (z <= 0.08) galaxies from the Galaxy And Mass Assembly survey which have both spectral energy distribution (SED) derived star-formation rates and photometric bulge-disc decompositions, the latter providing measures of disc surface brightness and disc masses. Using two samples, one of galaxies fitted by a single component with Sersic index below 2 and one of the discs from two-component fits, we find that once the overall mass dependence of star-formation rate is accounted for, there is no evidence in either sample for a further dependence on stellar surface density.
AB - The star-formation rate in galaxies is well known to correlate with stellar mass (the 'star-forming main sequence'). Here, we extend this further to explore any additional dependence on galaxy surface brightness, a proxy for stellar mass surface density. We use a large sample of low-redshift (z <= 0.08) galaxies from the Galaxy And Mass Assembly survey which have both spectral energy distribution (SED) derived star-formation rates and photometric bulge-disc decompositions, the latter providing measures of disc surface brightness and disc masses. Using two samples, one of galaxies fitted by a single component with Sersic index below 2 and one of the discs from two-component fits, we find that once the overall mass dependence of star-formation rate is accounted for, there is no evidence in either sample for a further dependence on stellar surface density.
KW - Galaxies: photometry
KW - Galaxies: star formation
KW - Galaxies: structure
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=uwapure5-25&SrcAuth=WosAPI&KeyUT=WOS:000928531300014&DestLinkType=FullRecord&DestApp=WOS
U2 - 10.1093/mnras/stac3440
DO - 10.1093/mnras/stac3440
M3 - Article
SN - 0035-8711
VL - 518
SP - 5475
EP - 5482
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -