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2021AstBu..76..292O - Astrophys. Bull., 76, 292-296 (2021/August-0)

HD 52721 as a Quadruple System.

OBOLENTSEVA M.A., DYACHENKO V.V., POGODIN M.A., KHOVRITCHEV M.Y., PAVLOVSKIY S.E., BALEGA Y.Y., BESKAKOTOV A.S., MITROFANOVA A.A. and MAKSIMOV A.F.

Abstract (from CDS):

We present the study of the multiple system HD 52721 by means of speckle interferometry in 2019-2020 at the 6-m telescope of the SAO RAS. Formerly, HD 52721 was known as triple (6.93 (B2V + B2V; P=1d.6101570) + 7.88; H0.'65).In ourwork,the system is resolved as a specklei nterferometrictrip system,i.e.,thetotal systemmul tiplicity increased up to four omponents(6.80(B2Ve;{{1}{°}}.6101570)+8.95(B9VX,0.{{''}}03); We have used the reference-dependent and reference-independent methods for measuring positional parameters and magnitude differences between the components. The obtained measurements of the brightness differences agree with the observed light curve of the eclipsing pair.

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Journal keyword(s): stars: pre-main sequence - stars: variables: Herbig Ae/Be - binaries: visual - techniques: high angular resolution

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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