More dwarf carbon stars

Details More dwarf carbon stars More dwarf carbon stars

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.261..185w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 261, no. 1, p. 185-189.

Astronomy and Astrophysics

Astronomy

23

Carbon Stars, Dwarf Stars, Stellar Luminosity, Stellar Motions, Position (Location), Sky Surveys (Astronomy)

Scientific paper

We have discovered three very faint carbon stars in the course of a multicolor survey for high-redshift quasars. Proper motion measurements have been made of these stars to determine their luminosity class. On this basis, the star 0045 - 259 is confirmed as a halo dwarf, joining the four dwarf carbon stars already known. These five dwarfs appear to have similar absolute magnitudes and tangential velocities. A second star, 0041 - 295, is also a dwarf, yet either its absolute magnitude or its tangential velocity differs from those of the five other dwarfs; it may be the first disk dwarf carbon star found. The time baseline for the proper motion measurement for the third star, 2048 - 348, is too small to allow the luminosity class to be determined. It could also be a dwarf; if it is a giant, it lies at a galactocentric distance of about 200 kpc.

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