SIMBAD references

2013MNRAS.433.1300F - Mon. Not. R. Astron. Soc., 433, 1300-1311 (2013/August-1)

Apsidal motion in massive close binary systems - I. HD 165052, an extreme case ?

FERRERO G., GAMEN R., BENVENUTO O. and FERNANDEZ-LAJUS E.

Abstract (from CDS):

We present a new set of radial velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling high-resolution optical spectra. The longitude of the periastron (π = 60±2°) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system, {dot}ϖ=12.1 ±0 ^○_. 3 yr-1, which was used to calculate the absolute masses of the binary components: M1 = 22.5±1.0M☉ and M2 = 20.5±0.9M☉. Analysing the separated spectra, we have reclassified the components as O7Vz and O7.5Vz stars.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): binaries: close - binaries: spectroscopic - stars: early-type - stars: fundamental parameters - stars: individual: HD 165052 - stars: massive

VizieR on-line data: <Available at CDS (J/MNRAS/433/1300): tableb1.dat rv.dat>

Simbad objects: 16

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