H I studies of the Sculptor group galaxies. V - NGC 253

Details H I studies of the Sculptor group galaxies. V - NGC 253 H I studies of the Sculptor group galaxies. V - NGC 253

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101..456p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, Feb. 1991, p. 456-464, 748-750. Research supported by NSERC and Ministere de l'

Astronomy and Astrophysics

Astronomy

68

Galactic Clusters, Spiral Galaxies, Astronomical Models, Galactic Mass, Galactic Rotation, Mass Distribution, Very Large Array (Vla)

Scientific paper

A study of the H I properties and mass distribution of the Sculptor group galaxy NGC 253, from VLA obserations, is presented. The detected H I disk is fairly small with a diameter of about 0.8 D HO. The rotation curve, derived from the velocity field using a full tilted ring model, is still rising at the last observed point. The maximum observed rotation velocity is 224 km/s at a radius of 8.5 kpc. From this analysis, a systematic velocity of 245 km/s, a mean inclination of 72 deg, and a mean position angle of 229 deg are derived. The study of the mass distribution shows that a two-component (luminous and dark) mass model is needed to explain the observed rotation curve over the whole radius range.

Affiliated with

Also associated with

No associations

Rating

H I studies of the Sculptor group galaxies. V - NGC 253 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 H I studies of the Sculptor group galaxies. V - NGC 253, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and H I studies of the Sculptor group galaxies. V - NGC 253 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1315506