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arXiv · 0906.2540

Dwarf Galaxies in the NGC 1023 Group

Neil Trentham·Brent Tully
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Abstract

We present a compilation of galaxies in the NGC 1023 Group, an accumulation of late-type galaxies at a distance of 10 Mpc. Members at high and intermediate luminosities were identified from their spectroscopic velocities. Members at low luminosities were identified from their morphologies on wide-field CCD images. The faint-end slope is in the range -1.27 < alpha < -1.12. There is evidence for two dwarf galaxy populations: one in the halo of NGC 1023 that is dominated by dwarf elliptical galaxies, and one in the infall region surrounding NGC 1023 that contains mainly dwarf irregular galaxies. Similar distinctive populations are observed in the Local Group.

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Neil Trentham, Brent Tully. 2009-06-14. Dwarf Galaxies in the NGC 1023 Group. https://doi.org/10.1111/j.1365-2966.2009.15189.x

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