Studies of nearly face-on spiral galaxies. III - H I synthesis observations of NGC 1058 and the mass distribution in galactic disks

Details Studies of nearly face-on spiral galaxies. III - H I synthesis observations of NGC 1058 and the mass distribution in galactic disks Studies of nearly face-on spiral galaxies. III - H I synthesis observations of NGC 1058 and the mass distribution in galactic disks

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...134..258v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 134, no. 2, May 1984, p. 258-267.

Astronomy and Astrophysics

Astronomy

115

Galactic Rotation, Galactic Structure, Gas Dynamics, Hydrogen Clouds, Mass Distribution, Spiral Galaxies, Kinematics, Mass To Light Ratios, Radial Velocity, Radio Astronomy

Scientific paper

Observations of H I synthesis in the nearly face-on Sc II-III spiral galaxy NGC 1058 are reported, as part of a general study of nearly face-on spiral galaxies. It is found that: (1) H I is much more extended than the known optical extent, and shows distinct spiral structure which correlated with faint outer optical emission found in deep photographs; (2) the velocity field rotates circularly in a plane at inclination of 6 to 10 deg in the inner parts and smoothly changes its orientation to exactly face-on at the edge of the observed H I radial extent; (3) the velocity dispersion is about 7 to 8 km/s at all radii, and this finding is consistent with H I velocity dispersion in other galaxies. The observed thickness of the hydrogen layer in NGC 1051 is also used to predict the percentage of the mass of NGC 891 that resides in the disk, and it is estimated to be between 20 and 35 percent.

Affiliated with

Also associated with

No associations

Rating

Studies of nearly face-on spiral galaxies. III - H I synthesis observations of NGC 1058 and the mass distribution in galactic 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 Studies of nearly face-on spiral galaxies. III - H I synthesis observations of NGC 1058 and the mass distribution in galactic disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studies of nearly face-on spiral galaxies. III - H I synthesis observations of NGC 1058 and the mass distribution in galactic disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1367451