Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21943928s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #439.28
Astronomy and Astrophysics
Astronomy
Scientific paper
We are exploring the theory that binary central stars of planetary nebulae are a contributing factor in the formation of planetary nebulae. Since periodic variability is indicative of a close binary system, we search for photometric variability in the central stars of planetary nebulae. The variability of our targets is assessed with the image subtraction software, ISIS. We find that the central stars of the planetary nebulae Hen 2-84 and NGC 6326 show variability. A preliminary light curve for Hen 2-84 shows periodic behavior, suggesting a binary system. We do not have sufficient data for NGC 6326 to determine periodicity, but our results are consistent with previous work that does show periodic behavior. Of the remaining targets observed, with sufficient data, seven do not appear to have substantial variability detected through ISIS and two targets have undeterminable variability.
Hillwig Todd
Schwartz Samantha Jo
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