Aperture synthesis observations of H I and CO in the early type starburst galaxy NGC 3928

Details Aperture synthesis observations of H I and CO in the early type starburst galaxy NGC 3928 Aperture synthesis observations of H I and CO in the early type starburst galaxy NGC 3928

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107...90l&link_type=abstract

The Astronomical Journal, vol. 107, no. 1, p.90-98

Astronomy and Astrophysics

Astronomy

7

Carbon Monoxide, Compact Galaxies, Disk Galaxies, Emission Spectra, Galactic Halos, H I Regions, Starburst Galaxies, Synthetic Apertures, Galactic Evolution, Galactic Rotation, Galactic Structure, Spatial Resolution, Spectrum Analysis, Star Formation, Velocity Distribution

Scientific paper

Aperture synthesis observations of the 21 cm H I and the (12)CO J = 1 approaches zero lines with spatial resolutions of 24 sec x 22 sec and 11 sec x 6, respectively, are presented to study the gas distribution and kinematics in the blue compact early type starburst galaxy NGC 3928. The CO emission is partially resolved and is confined to a rotating disk with full width at half maximum (FWHM) approximately 11 sec in the nucleus of the galaxy. There is evidence to suggest that CO (and possibly H I) is deficient in the central few hundred pc. The average H2 surface density of the molecular disk of approximately 400 solar mass/sq pc is much higher than found in the Galactic molecular ring. The H I emission is centrally concentrated and most of the emission is within its de Vaucouleurs' radius, features not shared by most of the gas-rich S0/Sa galaxies studied so far. The H I displays a regular velocity field and is consistent with a disk in nearly solid body rotation out to r approximately equal 3.7 kpc if no warp occurs within the optical radius, suggesting a dark halo surrounding the galaxy. There is good argreement between the kinematics of the CO and that of the H I where the two overlap in the inner part. The relatively unperturbed gas morphology argues against a recent interaction/merger being the cause of the nuclear starburst.

Affiliated with

Also associated with

No associations

Rating

Aperture synthesis observations of H I and CO in the early type starburst galaxy NGC 3928 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 Aperture synthesis observations of H I and CO in the early type starburst galaxy NGC 3928, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture synthesis observations of H I and CO in the early type starburst galaxy NGC 3928 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-865067