The Astrophysical Journal · 1976 · 36 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsRadio AstronomyStellar AstronomyStellar AstrophysicsStellar ObservationsStellar PopulationsStellar StructureVariable StarsLong-period VariablesOptical Absorption LinesOptical Absorption SpectraRadial VelocitiesRadial Velocity CurvesRadial Velocity MeasurementsRadial Velocity Variations
Recent radio observations indicate that the stellar velocity of long-period variable stars is not associated with the optical absorption lines. It lies between the optical absorption and emission lines near the midpoint of the OH radial velocity pattern. Subject headings: radial velocities - radio sources: lines - stars: circumstellar shells - stars: long-period variables