Spiral galaxies with a central plateau in the gas velocity curve along the major axis

Details Spiral galaxies with a central plateau in the gas velocity curve along the major axis Spiral galaxies with a central plateau in the gas velocity curve along the major axis

2005-05-19

arxiv.org/abs/astro-ph/0505407v1

Astronomy and Astrophysics

Astrophysics

6 pages, 1 figure, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20042228

We present the minor-axis kinematics of ionized gas and stars for a sample of 5 spiral galaxies, which are characterized by either a zero or a shallow gas velocity gradient along their major axis. The asymmetric velocity profiles observed along the minor axis of NGC 4064 and NGC 4189 can be explained as due to the presence of a bar. This is also the case of NGC 4178 where the innermost portion of the gaseous disk is nearly face on. In NGC 4424 and NGC 4941, we measured non-zero gas velocities only in the central regions along the minor axis and gas velocities drop to zero at larger radii. This kinematic feature is suggestive of the presence of an orthogonally-rotating gaseous component which is confined in the innermost regions (i.e. an inner polar disk) to be confirmed with integral-field spectroscopy.

Affiliated with

Also associated with

No associations

Rating

Spiral galaxies with a central plateau in the gas velocity curve along the major axis 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 Spiral galaxies with a central plateau in the gas velocity curve along the major axis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spiral galaxies with a central plateau in the gas velocity curve along the major axis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-582528