Surface Brightness Profiles of Three New Dwarf Spheroidal Companions to M31

Details Surface Brightness Profiles of Three New Dwarf Spheroidal Companions to M31 Surface Brightness Profiles of Three New Dwarf Spheroidal Companions to M31

1999-05-24

arxiv.org/abs/astro-ph/9905302v1

Astronomy and Astrophysics

Astrophysics

To appear in AJ

Scientific paper

10.1086/301020

CCD images of three newly discovered dwarf spheroidal companions to M31, And V, VI, and VII, are used to extract surface brightness profiles and total magnitudes. Using distance modulii provided by Armandroff et al. (1998 & 1999) and Grebel & Guhathakurta (1999), these galaxies are shown to have similar luminosities to other Local Group dwarf spheroidals; And V in particular is similar to Draco & UMi in luminosity, i.e., among the faintest known. In the luminosity-metallicity relation, And V is shown to have a significantly higher metallicity than expected.

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