The Catalog of Line-of-sight Velocities
and Proper Motions of
the OB Associations
Notation
- OB-ass. - the name of OB-association from C.Blaha and R.M.Humphreys
list (1989);
- l - the mean galactic longitude;
- b - the mean galactic latitude;
- r - the mean heliocentric distance, which equals r=0.8 rBH,
where rBH is the mean heliocentric distance from Blaha and Humphreys'
catalog (1989), for more details see the paper by Dambis et al (2001);
- Vr - the median line-of-sight velocity of the stars of the OB-association,
km s-1 ;
- dvr - the estimation of the line-of-sight velocity dispersion in
the OB-association, km s-1 ;
- nr - the number of stars in the OB-association with known line-of-sight
velocitiy, which were taken from the catalog of M.Barbier-Brossat and
P.Figon (2000); only velocities with estimation errors less than 10 km
s-1 were taken into account;
- mul - the median proper motion along galactic longitude of the stars
of the OB-association, in units of 0.001 arcsec year -1 ;
- dml- the estimation of mul dispersion in the OB-association,
in 0.001 arcsec year -1 ;
- mub - the median proper motion along galactic latitude of the stars
of the OB-association, in units of 0.001 arcsec year -1 ;
- dmb- the estimation of mub dispersion in the OB-association,
in 0.001 arcsec year -1 ;
- nm - the number of stars of the OB-association with known proper motion
from HIPPARCOS catalog (1997).
- Nt - the total number of stars in the OB-association
with known photometry from the catalog by Blaha and Humphreys (1989)
THE CATALOG of 81X81 elements + Notation
|