Evidence for a triaxial bulge in the spiral galaxy NGC 4845

Details Evidence for a triaxial bulge in the spiral galaxy NGC 4845 Evidence for a triaxial bulge in the spiral galaxy NGC 4845

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...345l..29b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 345, Oct. 1, 1989, p. L29-L32.

Astronomy and Astrophysics

Astrophysics

26

Astronomical Spectroscopy, Galactic Bulge, Galactic Structure, Spiral Galaxies, Astronomical Photometry, Emission Spectra, Luminosity, Velocity Distribution

Scientific paper

Spectroscopic observations for the Sa galaxy NGC 4845 in five position angles reveal a regular but nonaxisymmetric velocity field for the gas at r of 1.5 kpc or less. Photometry indicates a possible slight twisting between the disk and bulge isophotes. These phenomena are interpreted as a manifestation of a triaxial bulge, and estimates of the ranges of b/a and c/a are obtained.

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