Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005tvnv.conf..361s&link_type=abstract
Transits of Venus: New Views of the Solar System and Galaxy, Proceedings of IAU Colloquium #196, held 7-11 June, 2004 in Preston
Astronomy and Astrophysics
Astrophysics
8
Scientific paper
The distance to the Pleiades open cluster is of fundamental importance to many aspects of stellar astrophysics but is currently controversial. The`long' distance scale of 132 ± 3 pc is supported by main sequence fitting analyses, ground-based parallax observations and analysis of the astrometric binary Atlas. The `short' distance scale of 120 ± 3 pc comes from parallaxes observed by the Hipparcos satellite. Munari et al. (2004) studied the detached eclipsing binary HD 23642 and found a distance of 132 ± 2 pc. We reanalyse the data of Munari et al. to explore the different methods of estimating the distance of an eclipsing binary system. We use the surface brightness relations of Kervella et al. (2004) to find a distance of 139 ± 4 pc, which is consistent with the `long' Pleiades distance and in disagreement with the Hipparcos parallax distances to the Pleiades and to HD 23642 itself. By comparing the observed masses and radii of the binary with theoretical predictions we derive a metal abundance approximately equal to or slightly greater than solar. Further photometric observations of the binary are needed to improve the analysis.
Maxted Pierre F. L.
Smalley Barry
Southworth John
No associations
LandOfFree
The distance to the Pleiades from the eclipsing binary HD 23642 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 distance to the Pleiades from the eclipsing binary HD 23642, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The distance to the Pleiades from the eclipsing binary HD 23642 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1555404