Rolling motions in an inner spiral arm

Details Rolling motions in an inner spiral arm Rolling motions in an inner spiral arm

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...204...94s&link_type=abstract

Astrophysical Journal, vol. 204, Feb. 15, 1976, pt. 1, p. 94-100. Research supported by the Conselho Nacional de Pesquisas and

Astronomy and Astrophysics

Astronomy

12

Galactic Rotation, Galactic Structure, Radio Sources (Astronomy), Spiral Galaxies, Astronomical Models, H Lines, Line Shape, Milky Way Galaxy, Radial Velocity, Rolling, Velocity Distribution

Scientific paper

Hydrogen line-observations made at low galactic latitudes for galactic longitudes of 318, 326, 334, and 337 deg show the presence of velocity gradients in latitude in the nearest inner spiral arm, similar to those found by other observers in different regions. The maximum velocity change is about 10 km/s for 337 deg longitude. By generating synthetic line profiles constructed from a model spiral arm, several possible causes of these 'rolling motions' were studied, such as a vertical displacement or tilt of the arm (which failed to account for the observations) and rotation or shearing in the arm. It is shown that a typical arm can maintain such a motion (75 km/s/kpc) with its own gravitational potential. The results are used to study the origin and tilt of Gould's Belt.

Affiliated with

Also associated with

No associations

Rating

Rolling motions in an inner spiral arm 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 Rolling motions in an inner spiral arm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rolling motions in an inner spiral arm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1297532