G 82-23: A new subdwarf-white dwarf binary

Photometry and spectrophotometry of the proper motion star G 82-23 are presented. A comparison with subdwarfs and white dwarfs in the same range of temperature shows only partial agreement. If the parallax is taken into account, the best explanation of this object seems to be a binary structure with a K-subdwarf and a DC-white dwarf.Communication presented at the International Conference on Astrometric Binaries, held on 13–15 June, 1984, at the Remeis-Sternwarte Bamberg, Germany, to commemorate the 200th anniversary of the birth of Friedrich Wilhelm Bessel (1784–1846).