Other
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001msngr.103...31a&link_type=abstract
The Messenger, No. 103, p. 31 - 36 (March 2001)
Other
3
Luminous Galaxies, Compact Galaxies, Galaxy Mergers
Scientific paper
Observations of six luminous blue compact galaxies and two star-forming companion galaxies were carried out with the CIGALE scanning Fabry-Perot interferometer attached to the ESO 3.6-m telescope, targeting the Hα emission line. The gaseous velocity field presents large-scale pecularities, strong deviations to pure circular motions and sometimes, secondary dynamical components. In about half the cases, the observed rotational velocities are too small to allow for pure rotational support. If the gas and stars are dynamically coupled, a possible explanation is either that velocity dispersion dominates the gravitational support or the galaxies are not in dynamical equilibrium, because they are involved in mergers, explaining the peculiar kinematics. In two cases, we find evidence for the presence of dark matter within the extend of the Hα rotation curves and in two other cases we find marginal evidence. For most of the galaxies of the present sample, the observed peculiarities have probably as origin merging processes; in five cases, the merger hypothesis is the best way to explain the ignition of the starbursts. This is the most extensive study as yet of optical velocity fields of luminous blue compact galaxies.
Amram Ph.
Ostlin Goeran
No associations
LandOfFree
Building luminous blue compact galaxies by merging 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 Building luminous blue compact galaxies by merging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Building luminous blue compact galaxies by merging will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1093156