TITLE:
Homogeneous Distances to Several Stellar Groups in the Second Galactic Quadrant
AUTHORS:
Nadia Kaltcheva, Kevin Moran, Thomas Gehrman, Valeri Golev
KEYWORDS:
Open Clusters and Associations: Individual (NGC 869); Open Clusters and Associations: Individual (NGC 884); Open Clusters and Associations: Individual (Per OB1); Open Clusters and Associations: Individual (NGC 663); Open Clusters and Associations: Individual (NGC 1502)
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.3 No.3A,
July
18,
2013
ABSTRACT:
A photometric study in the uvbyβ system of a 20° × 20° field in direction of the Cas OB6 and Per OB1
associations is presented. All currently available uvbyβ photoelectric data are used to obtain homogeneous color excesses
and distances of nearly 230 stars of spectral types O-B9. The double cluster h & χ Per, NGC 663 and NGC 1502 are well represented
in our sample. The sample also contains the brightest members of the young open
clusters IC 1805, IC 1848, St 2, St 7 and ASCC9. We found that, within the errors,
h & χ Per, NGC 663, IC 1805, IC 1848
and ASCC9, together with the Per OB1 association are located at very similar distance
moduli between 11.0 to 11.3 mag. Our results indicate that the distance spread among
these objects is less than the previously estimated, suggested that they
could represent starforming complexes located at the same distance.