A search for box- or peanut-shaped bulges

Details A search for box- or peanut-shaped bulges A search for box- or peanut-shaped bulges

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91...65j&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, Jan. 1986, p. 65-69.

Astronomy and Astrophysics

Astronomy

63

Disk Galaxies, Galactic Structure, Distribution Functions, Galactic Clusters, Irregular Galaxies, Luminosity, Sky Surveys (Astronomy), Spiral Galaxies

Scientific paper

A search for disk galaxies with box- or peanut-shaped bulges from the ESO/SERC J sky survey south of declination -18 deg has revealed 30 such galaxies. Adding to these 11 other galaxies already known to have a similar morphology yields a bimodal frequency distribution with Hubble type: there is a strong tendency for box- and peanut-shaped bulges to occur in S0 and Sab to Sb type galaxies. Furthermore, the disk-to-bulge luminosity ratios of the S0 galaxies are similar to the spiral galaxies that have box- and peanut-shaped bulges, i.e., Sab and Sb Hubble types. Of the total sample of 41 galaxies, 54 percent are possible members of clusters and 63 percent have peanut-shaped bulges, compared to box-shaped bulges. Galaxy counts show that about 1.2 percent of all disk galaxies have box- or peanut-shaped bulges.

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