Other
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....95.1354v&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 95, May 1988, p. 1354-1359.
Other
115
Flow Velocity, Gas Dynamics, Hydrogen, Molecular Clouds, Spiral Galaxies, Supernovae, Astronomical Maps, Velocity Distribution
Scientific paper
The authors report the discovery of neutral hydrogen moving at high speed perpendicular to the disk of the nearby spiral galaxy M101. This material is found in two locations where the spiral structure itself seems particularly disturbed. The mass involved is 107 - 108 M_sun;. The velocities appear redshifted by up to about 150 km/s with respect to the "local" H I disk of M101, and yet they seem to connect smoothly to other features seen in that disk. The origin of these high-velocity H I structures is not clear. They may have resulted from fairly recent collisions of large, extragalactic gas clouds with the disk of M101. In that respect, this newly found gas in or near M101 may be similar to the HVCs of our galaxy. The observations also confirm that the H I layer of M101 extends far beyond the optical image in radius. This extended disk seems to become more symmetric in its faint outer parts. The velocity field suggests that the rotation curve of M101 has started to decline slowly in those outer regions.
Sancisi Renzo
van der Hulst Thijs
No associations
LandOfFree
High-velocity gas in M101 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 High-velocity gas in M101, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-velocity gas in M101 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-853733