Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001)

Details Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001) Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001)

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001ycat..33740394v&link_type=abstract

VizieR On-line Data Catalog: J/A+A/374/394. Originally published in: 2001A&A...374..394V

Mathematics

Logic

Galaxies: Rotation, Radial Velocities, Velocity Dispersion

Scientific paper

Ionized gas and stellar kinematical parameters have been measured along the major axis of 20 nearby disc galaxies. We discuss the properties of each sample galaxy, distinguishing between those characterized by regular or peculiar kinematics. In early-type disc galaxies, ionized gas tends to rotate faster than stars and to have a lower velocity dispersion (Vg>V* and σg<σ*), whereas in late-type spirals, gas and stars show almost the same rotation velocities and velocity dispersions (Vg=~V* and σg=~σ*). Incorporating the early-type disc galaxies studied by Bertola et al. (1995ApJ...448L..13B), Fisher (1997, Cat. ) and Corsini et al. (1999, Cat. ), we have compiled a sample of some 40 galaxies for which the major-axis radial profiles of both the stellar and gaseous components have been measured. The value of σ* measured at Re/4 turns out to be strongly correlated with the galaxy morphological type, while σg is not and sometimes takes values above the range expected from thermal motions or small-scale turbulence. (3 data files).

Affiliated with

Also associated with

No associations

Rating

Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001) 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 Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas and stars kinematics in disc galaxies (Vega Beltran+ 2001) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1394030