Chemistry and Physics Faculty Articles

Title

Flat Galaxies in the SDSS DR6

Document Type

Article

Publication Date

12-1-2009

Publication Title

Astronomische Nachrichten

Keywords

Galaxies: fundamental parameters, Galaxies: irregular, Galaxies: spiral, Galaxies: statistics, Galaxies: structure

ISSN

0004-6337

Volume

330

Issue/No.

9-10

First Page

1053

Last Page

1055

Abstract

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.

Comments

©2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Additional Comments

English version of journal title: Astronomical Notes

(© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

DOI

10.1002/asna.200911293

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Peer Reviewed

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