Other
Scientific paper
Feb 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011noao.prop..430d&link_type=abstract
NOAO Proposal ID #2011A-0430
Other
Scientific paper
There is growing evidence that a majority of planetary nebulae (PNe) harbor close binary central stars. If so, PNe would be a binary interaction phenomenon. If this were the case, there would be repercussions in our understanding of galactic enrichment, nebular shaping mechanisms, and the relationship between central stars of PN and other post-common envelope and strong interaction binary classes (e.g., novae, SN Ia). In this proposal we continue to test this hypothesis by determining the central star binary fraction. This is one of the suite of observational projects from a collaboration of 30 researchers, testing the PN binary hypothesis. So far we know that 15-20% of central stars of PN are in binaries with periods ⪉a few days, but the technique used to find them is insensitive at longer periods. We have recently carried out a pilot I-band excess survey at the NOAO 2.1 m telescope, from which we determined a binary fraction much larger than predicted. However, with a sample of only 26 objects, the statistical relevance of our result is limited. We therefore propose to extend the sample by a factor of two to improve the significance of the detected binary rate to the ~3σ level.
de Marco Orsola
Douchin Dimitri
Frew David
Hillwig Todd
Jacoby George
No associations
LandOfFree
The Binary Fraction of Central Stars of Planetary Nebulae 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 Binary Fraction of Central Stars of Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Binary Fraction of Central Stars of Planetary Nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1134397