Stellar and ionized gas kinematics in NGC 4672 (Sarzi+, 2000)

Details Stellar and ionized gas kinematics in NGC 4672 (Sarzi+, 2000) Stellar and ionized gas kinematics in NGC 4672 (Sarzi+, 2000)

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..33600439s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/360/439. Originally published in: 2000A&A...360..439S

Mathematics

Logic

Galaxies: Rotation, Radial Velocities, Velocity Dispersion

Scientific paper

We report the case of the early-type disk galaxy NGC 4672 as a new example of a galaxy characterized by the orthogonal geometrical decoupling between bulge and disk. The morphological features of this galaxy are discussed as well as the velocity curves and velocity dispersion profiles of stars and ionized gas along both its major and minor axis. We conclude that NGC 4672 has structural (i.e. a bulge elongated perpendicularly to the disk) and kinematical (i.e. a stellar core rotating perpendicularly to the disk) properties similar to those of the Sa NGC 4698. The presence of the isolated core suggests that the disk component is the end result of the acquisition of external material in polar orbits around a pre-existing oblate spheroid as in the case of the ring component of AM 2020-504, the prototype of polar ring ellipticals. (1 data file).

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