A Study on Intrinsic Flatness of the Disk Galaxies

Details A Study on Intrinsic Flatness of the Disk Galaxies A Study on Intrinsic Flatness of the Disk Galaxies

Nov 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003acasn..44..342y&link_type=abstract

Acta Astronomica Sinica, vol. 44, no. 4, p. 342-349

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Galaxies: General, Galaxies: Structure, Galaxies: Photometry

Scientific paper

The intrinsic flatness of the disk galaxies is very important to calculate the spatial inclinations of galaxies. The statistical analysis on 14,988 disk galaxies taken from the LEDA database shows that the intrinsic flatness is closely related to galactic morphology. In general, the intrinsic axis ratios q0 for the lenticular and irregular galaxies are larger than those of the spirals, and the early-type spirals have a larger q0 than. The late-types. The Scd galaxies are found to have the minimum q0 . Based on the newly generated q0 -T relation, the inclinations for 16 bright galaxies with known inclinations are calculated, and the values are consistent with the inclinations derived by other methods.

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