Component Masses of the Young Spectroscopic Binary UZ Tau E | Zendy

L. Prato | Zendy; M. Simon | Zendy; T. Mazeh | Zendy; S. Zucker | Zendy; Ian S. McLean | Zendy

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Component Masses of the Young Spectroscopic Binary UZ Tau E

Author(s) -

L. Prato,

M. Simon,

T. Mazeh,

S. Zucker,

Ian S. McLean

Publication year - 2002

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 - 10.1086/345317

Subject(s) - circumbinary planet , physics , mass ratio , astrophysics , binary number , binary system , millimeter , spectroscopy , component (thermodynamics) , orbit (dynamics) , stars , analytical chemistry (journal) , astronomy , chemistry , mathematics , arithmetic , engineering , aerospace engineering , chromatography , thermodynamics

We report estimates of the masses of the component stars in thepre-main-sequence spectroscopic binary UZ Tau E. These results come from thecombination of our measurements of the mass ratio, M2/M1=0.28 +/-0.01, obtainedusing high resolution H-band spectroscopy, with the total mass of the system,(1.31 +/-0.08)(D/140pc) M_sun, derived from millimeter observations of thecircumbinary disk (Simon et al. 2000). The masses of the primary and secondaryare (1.016 +/-0.065)(D/140pc) M_sun and (0.294 +/-0.027)(D/140pc) M_sun,respectively. Using the orbital parameters determined from our six epochs ofobservation, we find that the inclination of the binary orbit, 59.8 +/-4.4degrees, is consistent with that determined for the circumbinary disk from themillimeter observations, indicating that the disk and binary orbits areprobably coplanar.Comment: 4 pages, 3 figures, accepted for publication in ApJ Letter

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