Central Holes in Galaxy Disks -- How Common Are They?

Details Central Holes in Galaxy Disks -- How Common Are They? Central Holes in Galaxy Disks -- How Common Are They?

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...181.6510b&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #65.10; Bulletin of the American Astronomical Society, Vol. 24, p.1223

Astronomy and Astrophysics

Astronomy

Scientific paper

Baggett, Baggett, and Anderson (1992, BAAS, 24, 808.; 1993, in preparation) reported that about 25% of the spiral galaxies in an admittedly inhomogeneous sample exhibited inner-truncated disks. In addition, inner truncations appeared to be slightly more common in barred spirals than in non-barred. We are continuing the study using a homogeneous sample of galaxy brightness profiles from the ``Photometric Atlas of Northern Bright Galaxies" (Kodaira, Okamura, and Ichikawa, eds., 1990, (University of Tokyo Press, Tokyo)); bulge-disk decomposition is being used to classify objectively the truncation status of the galaxies. Preliminary results from an analysis of approximately 300 galaxies from this homogeneous sample are presented. The new data confirms the general frequency of occurrence initially reported in Baggett, Baggett, and Anderson (1992), and lends additional support for the trend that barred spirals are more likely to be inner-truncated than non-barred.

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