Rotational velocities of F dwarfs; application of the Fourier-Bessel transformation method.
Abstract
Projected rotational velocities are presented for 178 bright dwarf stars (V<7) with spectral types in the range A8 till G2. These rotational velocities have been determined by Fourier-Bessel transformation of the line profiles of six Fe I absorption lines in a 50 A wide range centered on 6250A. Rotational velocities of stars with suspected velocities of more than 40km/s were also determined by fitting the whole spectral range with a profile of a slowly rotating star of the same spectral type that has been convolved with a rotation profile. The agreement between the results obtained with these two methods is very good.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- September 1996
- Bibcode:
- 1996A&AS..118..545G
- Keywords:
-
- LINE: PROFILES;
- STARS: ROTATION;
- TECHNIQUES: SPECTROSCOPIC