Dynamical parallax, physical parameters, and evolutionary status of the components of the bright eclipsing binary alpha Draconis

Creative Commons License

Pavlovski K., Hummel C. A., Tkachenko A., Dervisoglu A., Kayhan C., Zavala R. T., ...More

ASTRONOMY & ASTROPHYSICS, vol.658, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 658
  • Publication Date: 2022
  • Doi Number: 10.1051/0004-6361/202142292
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Keywords: stars: fundamental parameters, binaries: spectroscopic, binaries: eclipsing, techniques: interferometric, techniques: spectroscopic, stars: individual: alpha Dra, V-SIN-I, A-TYPE STARS, BOLOMETRIC CORRECTIONS, EFFECTIVE TEMPERATURES, ROTATIONAL VELOCITIES, ABSOLUTE DIMENSIONS, STELLAR EVOLUTION, MASS STARS, B STARS, MULTIPLICITY
  • Erciyes University Affiliated: Yes


Aims. Both components of the bright eclipsing binary a Dra have been resolved using long baseline interferometry and the secondary component has been shown to contribute approximately 15% of the total flux; however, a spectroscopic detection of the companion star has so far been unsuccessful. We aim for a firm spectroscopic detection of the secondary component of alpha Dra using state-of-the-art spectroscopic analysis methods for very high-quality spectroscopic observations. This will allow the determination of fundamental and atmospheric properties of the components in the system with high precision and accuracy.