Other
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.7103y&link_type=abstract
American Astronomical Society Meeting 207, #71.03; Bulletin of the American Astronomical Society, Vol. 37, p.1278
Other
Scientific paper
The orbital parameters of close binary systems are constantly changing due to the effects of tidal circularization. We measured this effect in the intermediate-age ( ˜ 2.5 Gyr) open cluster NGC 6819 by determining the tidal circularization period as defined by Meibom & Mathieu (2005, ApJ, 620, 970). This is the longest period at which a typical binary has evolved to an eccentricity consistent with zero in the age of the population. The distribution of orbital eccentricity versus orbital period for 39 main-sequence spectroscopic binaries in the cluster shows a tidal circularization period of ˜ 7.5 days. When compared to other coeval populations, we find that this result is consistent with the overall trend of increasing tidal circularization period with population age. These findings derive from 6410 radial-velocity measurements of 1356 stars with 12.5 < V < 16.5 (Hole et al. 2005, AJ, submitted) using the WIYN Hydra Multi-Object Spectrograph. Typical velocity measurement precisions are ˜ 0.3 km/sec. SY was supported by REU NSF grant AST-0453442. RDM and SM are supported by NSF grant AST-0406615.
Mathieu Robert D.
Meibom Soeren
Yelda Sylvana
No associations
LandOfFree
WIYN Open Cluster Study: Tidal Circularization in NGC 6819 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 WIYN Open Cluster Study: Tidal Circularization in NGC 6819, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WIYN Open Cluster Study: Tidal Circularization in NGC 6819 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1281104