Faded Galaxies: Near-IR selected Low Surface Brightness Galaxies

Details Faded Galaxies: Near-IR selected Low Surface Brightness Galaxies Faded Galaxies: Near-IR selected Low Surface Brightness Galaxies

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.0211g&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #02.11; Bulletin of the American Astronomical Society, Vol. 30, p.1245

Astronomy and Astrophysics

Astronomy

Scientific paper

Low surface brightness galaxies (LSBG) are possibly abundant in number and are distinguished by their extreme mass to light ratios. Using a scaled version of the LSB criterion in the optical we can define a near-IR definition for a LSBG. Here we present a near-IR study of UGC galaxies selected by their low surface brightness in the near-IR. By measuring near-IR colors, scale lengths, color gradients and morphologies we constrain the ages, metalicities and star formation efficiencies of these galaxies. Whereas optically selected low surface brightness galaxies are heavily weighted towards irregular low metalicity objects our near-IR survey is more weighted towards `faded' galaxies consisting of old stellar populations with little ongoing star formation.

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