The M dwarf double-lined spectroscopic binary Gliese 268.
Abstract
High-resolution Digicon observations in the neighborhood of Hα reveal Gliese 268 as a double-lined spectroscopic binary with components of similar brightness. Separate orbital solutions of the primary and secondary velocities yield mutually consistent orbital elements; the authors find an orbital period of 10d.4, a moderately eccentric orbit (e = 0.34), and a mass ratio M1/M2 = 1.20. The primary and secondary minimum masses of 0.191 and 0.159 M_sun;, respectively, must be very close to the actual masses of the primary and secondary, which are both dM5e stars.
- Publication:
-
The Astronomical Journal
- Pub Date:
- December 1986
- DOI:
- 10.1086/114278
- Bibcode:
- 1986AJ.....92.1424T
- Keywords:
-
- Binary Stars;
- Dwarf Stars;
- Line Spectra;
- M Stars;
- Stellar Spectra;
- Eccentric Orbits;
- H Alpha Line;
- Orbital Elements;
- Stellar Luminosity;
- Stellar Mass;
- Astronomy;
- Masses:Spectroscopic Binaries;
- Orbital Elements:Spectroscopic Binaries;
- Radial Velocities:Spectroscopic Binaries;
- Spectroscopic Binaries:Masses;
- Spectroscopic Binaries:Orbital Elements;
- Spectroscopic Binaries:Radial Velocities