Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....116.1221e&link_type=abstract
The Astronomical Journal, Volume 116, Issue 3, pp. 1221-1226.
Astronomy and Astrophysics
Astronomy
22
Galaxies: Active, Galaxies: Nuclei, Galaxies: Starburst
Scientific paper
We use high-resolution near-infrared (J- and K-band) images of the nuclear starburst galaxy NGC 6946 to compare stellar morphology with the previously published distribution of CO in the central regions. We find a small stellar bar with a length of 210 pc, which lies perpendicular to an 1860 pc long stellar oval distortion. The small bar has a position angle of 140 deg, which coincides with a barlike feature in CO, as well as with the kinematic minor axis. It has a flat light distribution and a strong bar-interbar contrast of 1 mag; it may play a role in fueling the central starburst despite its small size. A biconical structure about 80 pc long, perpendicular to the bar, is evident in the (J - K) color map. The (J - K) contours match published high-resolution CO contours very well.
Chromey Frederick R.
Elmegreen Debra Meloy
Santos Michael
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