High-resolution CO observations of NGC 7252 - A counterrotating central molecular gas disk

Details High-resolution CO observations of NGC 7252 - A counterrotating central molecular gas disk High-resolution CO observations of NGC 7252 - A counterrotating central molecular gas disk

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396..510w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 396, no. 2, Sept. 10, 1992, p. 510-516.

Astronomy and Astrophysics

Astrophysics

43

Carbon Monoxide, Galactic Evolution, Galactic Nuclei, Galactic Structure, Interacting Galaxies, Molecular Clouds, Computerized Simulation, Counter Rotation, Galactic Rotation, H I Regions

Scientific paper

The paper reports 2.4-arcsec resolution interferometric observations of the CO emission in the merger galaxy NGC 7252. The molecular gas concentration around the nucleus of this galaxy is well resolved and shows solid body rotation in a direction opposite to the motion of the ionized gas in the outer parts of the galaxy. The CO surface brightness distribution is complex, yet the kinematics of the molecular gas bears striking resemblance to that of the inner ionized gas disk. The CO can be traced farther into the galactic center than the H-alpha emission, but a small central hole (about 300 pc radius) apparently free of gas remains. At larger radii, there is a gap between the molecular gas disk and the outlying atomic gas found in H I maps. The molecular gas observations are discussed in light of recent numerical simulations showing the formation of a kinematically decoupled gas concentration at the center of a merger remnant. It is suggested that NGC 7252 is well on its way to becoming an elliptical with a counterrotating stellar core.

Affiliated with

Also associated with

No associations

Rating

High-resolution CO observations of NGC 7252 - A counterrotating central molecular gas disk 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 High-resolution CO observations of NGC 7252 - A counterrotating central molecular gas disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-resolution CO observations of NGC 7252 - A counterrotating central molecular gas disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1765876