Galaxies morphology and IR photometry. VIII (Pierini+, 2002)

Details Galaxies morphology and IR photometry. VIII (Pierini+, 2002) Galaxies morphology and IR photometry. VIII (Pierini+, 2002)

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..73320422p&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/332/422. Originally published in: 2002MNRAS.332..422P

Computer Science

Galaxies: Nearby, Photometry: Surface, Photometry: Infrared, Morphology

Scientific paper

We present the distribution of a statistical sample of nearby galaxies in the {kappa}-space ({kappa1}{prop.to}logM, {kappa}2{prop.to}log(Ie)3*M/L, {kappa}3{prop.to}M/L). Our study is based on near-IR (H-band: {lamdba}=1.65{mu}m) observations, for the first time comprising early- and late-type systems. Our data confirm that the mean effective dynamical mass-to-light ratio M/L of the E+S0+S0a galaxies increases with increasing effective dynamical mass M, as expected from the existence of the Fundamental Plane relation. Conversely, spiral and Im/BCD galaxies show broad distribution in M/L with no detected trend of M/L with M, the former galaxies having M/L values about twice larger than the latter, on average. For all the late-type galaxies, the M/L increases with decreasing effective surface intensity Ie, consistent with the existence of the Tully-Fisher relation.
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