The rotation curve of the galaxy

Details The rotation curve of the galaxy The rotation curve of the galaxy

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...158..181r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 158, no. 1-2, April 1986, p. 181-190.

Astronomy and Astrophysics

Astrophysics

58

Constants, Galactic Rotation, Milky Way Galaxy, Curves (Geometry), Distance, H Ii Regions, Radial Velocity, Radii

Scientific paper

The increase of the number of galactic H II regions with well determined photometric distances and radial velocities made a new determination of the galactic rotation curve possible. From suitably selected local H II regions new values for the local rotation constants were derived resulting in r0 = 7.9±0.7 kpc, A0 = 16.0±1.3 km s-1kpc-1. The resulting rotation curve for r < r0 relies mainly on radio data, and in the innermost 4 kpc non circular gas motion was taken into account. For r > r0 the curve is based on the H II region data. The resulting rotation curve is remarkably flat on a large scale although it is decreasing from 200 km s-1 to 170 km s-1 between r = 6 kpc and r = 10 kpc and again rises back to θ = 200 km s-1 at r = 16 kpc. It thus bears great similarity to the rotation curves observed for other large Sb and Sc galaxies.

Affiliated with

Also associated with

No associations

Rating

The rotation curve of the galaxy 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 The rotation curve of the galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The rotation curve of the galaxy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1101059