The Discovery of a Nearby M Dwarf
Shemmer, Ohad · Kaspi, Shai
Original · EN
We report the discovery of a nearby M dwarf star, found accidentally while observing the old nova DN Gem at the Wise Observatory. The star is designated 1200-05296925 in the PMM USNO-A1.0 catalogue and its coordinates, calculated for 1997 November 27 are: RA=6 55 05.13 Dec = +32 09 54.1 (Equinox J2000, Epoch J1997.90). Astrometric measurements for the star yielded a yearly proper motion rate of 0.155±0.002 arcseconds in right ascension and negligible yearly proper motion rate in declination. The apparent V magnitude of the star was measured as mᵥ=13.87±0.16 mag and spectral identification yielded a spectral type of M3.5Ve±0.5 subclasses. Using relations between spectral type and absolute V magnitude in M dwarfs, we arrive at an absolute magnitude of Mᵥ=12.3⁺¹.²₋₁.₁ mag, which corresponds to a distance of 21⁺¹⁵₋₁₀ pc.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.