Physics – Optics
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278...96c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 1, 1984, p. 96-111.
Physics
Optics
43
Cosmic Gases, Galactic Rotation, Galactic Structure, Interstellar Gas, Stellar Motions, Accretion Disks, Cassegrain Optics, Cosmic Dust, Galactic Evolution, Ionized Gases, Stellar Luminosity, Velocity Distribution
Scientific paper
Direct photographic and spectroscopic data are used to study the inner ionized gas disks and stellar velocity fields of two early-type galaxies which have dust lanes along their projected minor axes. The gas disk in NGC 6266 is rotating as usual about the projected major axis of the light distribution; the stellar component is rotating as usual about the minor axis, with a maximum projected velocity of 137 km/s and a central velocity dispersion of 190 km/s. The dust lane has a 25-deg warp which is rotating in a prograde sense to the stellar rotation and is thus not in a plane stable against precession. In addition, the rotation axis of the small gas disk in NGC 3108 is shown to be nearly aligned with that of the minor axis of the light distribution. A time limit of at least one-billon years can be assigned to the age of the dust lane, based on the number of revolutions needed to distribute a gas cloud into a ring; star formation has occurred in the lane and currently accounts for about half of the present mass in the ring, which is estimated to be at least several times 100-million solar masses. The rotation curve of the gas is found to be substantially shallower than is implied by the light distribution.
No associations
LandOfFree
Two early-type galaxies with ionized gas disks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Two early-type galaxies with ionized gas disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two early-type galaxies with ionized gas disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1037166