SIMBAD references

2017AstBu..72...16Z - Astrophys. Bull., 72, 16-23 (2017)

Stars with discrepant v sin i as derived from the Ca II 3933 and Mg II 4481 A lines. VI. HD 199892 – an SB2 spectroscopic binary.

ZVERKO J., ROMANYUK I., ILIEV I., KUDRYAVTSEV D., STATEVA I. and SEMENKO E.

Abstract (from CDS):

We analyzed the spectra of a well known SB1 binary HD199892 for which the projected rotational velocity v sin i, introduced in the literature, significantly differs when determined from the lines of Ca II at 3933 A and of Mg II at 4481 A. Contrary to the former findings, we discovered the signs of spectral lines of a companion star in the profile of H-beta as well as weak metallic lines in the high resolution high S/N spectra covering the most of the visual region. We estimated the secondary star to be a main sequence A4V star with a mass of 2.2 solar and derived its radial velocity which resulted in the mass of the primary M = 4.6 solar. Short sections of the spectra in the Mg II 4481 A and Ca II 3933 A regions are analyzed as well.

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Journal keyword(s): binaries: spectroscopic - stars: rotation - stars: individual: HD199892

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

Simbad objects: 1

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