Photometric analysis of the eclipsing binary star AI Draconis

Details Photometric analysis of the eclipsing binary star AI Draconis Photometric analysis of the eclipsing binary star AI Draconis

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...363..244d&link_type=abstract

Astronomy and Astrophysics, v.363, p.244-252 (2000)

Astronomy and Astrophysics

Astrophysics

8

Stars: Binaries: Eclipsing, Stars: Individual: Ai Dra

Scientific paper

New photometric data from the eclipsing binary star AI Draconis has been analyzed with the method of Wilson-Devinney. The system shows a period increase of about 0.91 sec per century, which corresponds to a mass transfer from the less to the more massive component at a rate of 7.5 10-7 Msun/yr under the conservative mass transfer hypothesis. We also suggest that the system has an unseen component which orbits around the mass center of the triplet system with a period of about 23 yrs. We found that the projectional angular separation between the third star and eclipsing pair varies from 0.048 arcsec to 0.235 arcsec. These results suggestive of a third body should be checked in the future with more sensitive observations. Table 1 is only available electronically with the On-Line publication at http://link.springer.de/link/service/00230/

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