ROTATIONAL VELOCITIES OF F-DWARFS - APPLICATION OF THE FOURIER-BESSELTRANSFORMATION METHOD

Citation
Pj. Groot et al., ROTATIONAL VELOCITIES OF F-DWARFS - APPLICATION OF THE FOURIER-BESSELTRANSFORMATION METHOD, Astronomy & Astrophysics. Supplement series, 118(3), 1996, pp. 545-555
Citations number
25
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
03650138
Volume
118
Issue
3
Year of publication
1996
Pages
545 - 555
Database
ISI
SICI code
0365-0138(1996)118:3<545:RVOF-A>2.0.ZU;2-7
Abstract
Projected rotational velocities are presented for 178 bright dwarf sta rs (V <7) with spectral types in the range A8 till G2. These rotationa l velocities have been determined by Fourier-Bessel transformation of the line profiles of six Fe I absorption lines in a 50 Angstrom wide r ange centered on 6250 Angstrom. Rotational velocities of stars with su spected velocities of more than 40 km/s were also determined by fittin g the whole spectral range with a profile of a slowly rotating star of the same spectral type that has been convolved with a rotation profil e. The agreement between the results obtained with these two methods i s very good.