Flat galaxies in the SDSS DR6

Details Flat galaxies in the SDSS DR6 Flat galaxies in the SDSS DR6

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009an....330.1053k&link_type=abstract

Astronomische Nachrichten, Vol.330, Issue , p.1053

Statistics

3

Galaxies: Fundamental Parameters, Galaxies: Irregular, Galaxies: Spiral, Galaxies: Statistics, Galaxies: Structure

Scientific paper

This study presents the fractions of different spiral galaxy types from a complete and homogeneous sample of 15 127 edge-on disk galaxies extracted from the sixth data release from the Sloan Digital Sky Survey. The sample is divided in broad morphological classes and sub types consisting of galaxies with bulges, intermediate types and galaxies which appear bulgeless. A small fraction of disky irregulars is also detected. The morphological separation is based on automated classification criteria which resemble the bulge sizes and the flatness of the disks. Each of these broad classes contains about 1/3 of the total sample. Using strict criteria for selecting pure bulgeless galaxies leads to a fraction of 15 % of simple disk galaxies.

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