Hidden Bars and Boxy Bulges

Details Hidden Bars and Boxy Bulges Hidden Bars and Boxy Bulges

1999-04-13

arxiv.org/abs/astro-ph/9904158v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, to appear in A&ALett. Colour version of figure a vailable from http://www.astro.rug.nl/~kuijken/nutkinfig2.

Scientific paper

It has been suggested that the boxy and peanut-shaped bulges found in some edge-on galaxies are galactic bars viewed from the side. We investigate this hypothesis by presenting emission-line spectra for a sample of 10 edge-on galaxies that display a variety of bulge morphologies. To avoid potential biases in the classification of this morphology, we use an objective measure of bulge shape. Generally, bulges classified as more boxy show the more complicated kinematics characteristic of edge-on bars, confirming the intimate relation between the two phenomena.

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