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


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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 Name: ASTRONOMY & ASTROPHYSICS
  • 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

Abstract

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.