Are halo carbon stars associated with dwarf spheroidal galaxies?

Astronomy and Astrophysics – Astronomy

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Carbon Stars, Dwarf Galaxies, Halos, Counting, Galactic Structure

Scientific paper

Star counts have been performed for rings centered on the carbon star at 1 = 69 degrees, b = + 55 degrees at a distance of 60 kpc. The counts were performed in order to determine whether halo carbon stars might be situated in dwarf spheroidal galaxies which are too star-poor to have been recognized as galaxies. The counts were made on a IIIa-J plate baked in forming gas that was exposed for 40 minutes through a 2C filter with the Palomar 1.2-m Schmidt telescope. It is shown that the carbon star is not situated in a dwarf spheroidal galaxy brighter than M(V) = 5.7.

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