The shape of central regions in elliptical galaxies

Details The shape of central regions in elliptical galaxies The shape of central regions in elliptical galaxies

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...244l..25n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 244, no. 1, April 1991, p. L25-L28.

Astronomy and Astrophysics

Astrophysics

43

Charge Coupled Devices, Early Stars, Elliptical Galaxies, Galactic Structure, Isophotes, Astronomical Photometry, Kinematics, Stellar Motions

Scientific paper

Isophote analysis of high-resolution CCD images of a large sample of 75 early-type, mostly elliptical, galaxies indicates that 25 of these objects harbor central bodies that appear separate from the rest of the galaxy, and whose sizes are in the 2-10-arcsec range. Fifteen of these 25 central substructures exhibit clearly 'pointed' isophotes, and all objects known to have decoupled core kinematics exhibit a photometric substructure coinciding in radius with the kinematic substructure. Several arguments suggest that these central substructures are disks.

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