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Letter to the Editor
Hidden bars and boxy bulges
Received 11 March 1999 / Accepted 13 April 1999
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.
Key words: galaxies: kinematics and dynamics galaxies: spiral galaxies: structure
Send offprint requests to: Konrad Kuijken (firstname.lastname@example.org), Kapteyn Institute, P.O. Box 800, 9700 AV Groningen, The Netherlands.
Online publication: April 28, 1999