A Broad Search for Counterrotating Gas and Stars: Evidence for Mergers and Accretion

Details A Broad Search for Counterrotating Gas and Stars: Evidence for Mergers and Accretion A Broad Search for Counterrotating Gas and Stars: Evidence for Mergers and Accretion

2000-09-15

arxiv.org/abs/astro-ph/0009234v1

Astron.J.121:140-147,2001

Astronomy and Astrophysics

Astrophysics

19 pages, 4 figures, AJ, accepted

Scientific paper

10.1086/318027

We measure the frequency of bulk gas-stellar counterrotation in a sample of 67 galaxies drawn from the Nearby Field Galaxy Survey, a broadly representative survey of the local galaxy population down to M_B-15. We detect 4 counterrotators among 17 E/S0's with extended gas emission (24% +8 -6). In contrast, we find no clear examples of bulk counterrotation among 38 Sa-Sbc spirals, although one Sa does show peculiar gas kinematics. This result implies that, at 95% confidence, no more than 8% of Sa-Sbc spirals are bulk counterrotators. Among types Sc and later, we identify only one possible counterrotator, a Magellanic irregular. We use these results together with the physical properties of the counterrotators to constrain possible origins for this phenomenon.

Affiliated with

Also associated with

No associations

Rating

A Broad Search for Counterrotating Gas and Stars: Evidence for Mergers and Accretion 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 A Broad Search for Counterrotating Gas and Stars: Evidence for Mergers and Accretion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Broad Search for Counterrotating Gas and Stars: Evidence for Mergers and Accretion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-371325