Optical spectroscopy of HD 199178 : velocity and activity.
Abstract
Spectroscopic observations of HD 199178, obtained at 390-900 nm using the 1.6-m telescope at Black Moshannon Observatory during April-October 1985, are reported. One-dimensional spectra are derived and used to calculate radial and rotational velocities. Rotational velocity of 80 km/s (suggesting a coalesced binary) and no variation greater than 2.0 km/s in the heliocentric radial velocity are found. The emission and absorption features are attributed to a combination of a relatively steady global component and transient events, with evidence of a significant hot corona.
- Publication:
-
The Astronomical Journal
- Pub Date:
- September 1986
- DOI:
- 10.1086/114201
- Bibcode:
- 1986AJ.....92..673H
- Keywords:
-
- Giant Stars;
- Late Stars;
- Radial Velocity;
- Stellar Activity;
- Stellar Spectrophotometry;
- Visible Spectrum;
- Absorption Spectra;
- Balmer Series;
- Binary Stars;
- Emission Spectra;
- Stellar Rotation;
- Astrophysics