Contents
Images
Upload your image
DSS Images Other Images
Related articles
Photometric analysis of the eclipsing binary star AI Draconis
New photometric data from the eclipsing binary star AI Draconis has beenanalyzed with the method of Wilson-Devinney. The system shows a periodincrease of about 0.91 sec per century, which corresponds to a masstransfer from the less to the more massive component at a rate of 7.510-7 Msun/yr under the conservative mass transferhypothesis. We also suggest that the system has an unseen componentwhich orbits around the mass center of the triplet system with a periodof about 23 yrs. We found that the projectional angular separationbetween the third star and eclipsing pair varies from 0.048 arcsec to0.235 arcsec. These results suggestive of a third body should be checkedin the future with more sensitive observations. Table 1 is onlyavailable electronically with the On-Line publication athttp://link.springer.de/link/service/00230/
| Stellar spectrophotometric standards. II
Not Available
|
Submit a new article
Related links
Submit a new link
Member of following groups:
|
Observation and Astrometry data
| Constellation: | Draco |
| Right ascension: | 17h02m08.26s |
| Declination: | +51°56'32.4" |
| Apparent magnitude: | 7.846 |
| Distance: | 162.602 parsecs |
| Proper motion RA: | -8 |
| Proper motion Dec: | -53.8 |
| B-T magnitude: | 8.109 |
| V-T magnitude: | 7.868 |
Catalogs and designations:
|
