A Preliminary Visual Orbit of BY Draconis | Zendy

Andrew F. Boden | Zendy; Benjamin F. Lane | Zendy

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A Preliminary Visual Orbit of BY Draconis

Author(s) -

Andrew F. Boden,

Benjamin F. Lane

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/318394

Subject(s) - orbit (dynamics) , physics , visual binary , interferometry , radial velocity , visibility , orientation (vector space) , binary number , astronomy , geodesy , binary star , astrophysics , optics , geology , stars , geometry , mathematics , aerospace engineering , arithmetic , engineering

We report on the preliminary determination of the visual orbit of thedouble-lined spectroscopic binary system BY Draconis with data obtained by thePalomar Testbed Interferometer in 1999. BY Dra is a nearly equal-massdouble-lined binary system whose spectroscopic orbit is well known. We haveestimated the visual orbit of BY Dra from our interferometric visibility datafit both separately and in conjunction with archival radial velocity data. OurBY Dra orbit is in good agreement with the spectroscopic results. Due to theorbit's face-on orientation, the physical parameters implied by a combined fitto our visibility data and radial velocity data do not yet result in precisecomponent masses and a system distance, but with continued interferometricmonitoring we hope to improve the mass estimates to better than 10%determinations.Comment: 13 pages, 4 figures, ApJL submitte

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