The Problem of Hipparcos Distances to Open Clusters. II. Constraints from Nearby Field Stars

Details The Problem of Hipparcos Distances to Open Clusters. II. Constraints from Nearby Field Stars The Problem of Hipparcos Distances to Open Clusters. II. Constraints from Nearby Field Stars

1998-01-28

arxiv.org/abs/astro-ph/9801281v1

Astronomy and Astrophysics

Astrophysics

22 pages (including 4 tables) plus 6 figures

Scientific paper

10.1086/306073

This paper examines the discrepancy between distances to nearby open clusters as determined by parallaxes from Hipparcos compared to traditional main sequence fitting. The biggest difference is seen for the Pleiades, and our hypothesis is that if the Hipparcos distance to the Pleiades is correct, then similar subluminous ZAMS stars should exist elsewhere, including the immediate solar neighborhood. We examine a color-magnitude diagram of very young and nearby solar-type stars and show that none of them lie below the traditional ZAMS, despite the fact that the Hipparcos Pleiades parallax would place its members 0.3 magnitude below that ZAMS. We also present analyses and observations of solar-type stars that do lie below the ZAMS and show that they are subluminous because of low metallicity and that they have the kinematics of old stars.

Affiliated with

Also associated with

No associations

Rating

The Problem of Hipparcos Distances to Open Clusters. II. Constraints from Nearby Field Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Problem of Hipparcos Distances to Open Clusters. II. Constraints from Nearby Field Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Problem of Hipparcos Distances to Open Clusters. II. Constraints from Nearby Field Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-639233