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Analysis of eclipsing binaries in multiple stellar systems: the case of V1200 Centauri

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cris.lastimport.scopus2024-02-12T20:12:46Z
dc.abstract.enWe present a new analysis of the multiple-star V1200 Centauri based on the most recent observations for this system. We used the photometric observations from the Solaris network and the Transiting Exoplanet Survey Satellite telescope, combined with the new radial velocities from the CHIRON spectrograph and those published in the literature. We confirmed that V1200 Cen consists of a 2.5-d eclipsing binary orbited by a third body. We derived the parameters of the eclipsing components, which are $M_{\mathrm{ Aa}} = 1.393\pm 0.018\,$ M<SUB>☉</SUB>, $R_{\mathrm{ Aa}} = 1.407\pm 0.014\,$ R<SUB>☉</SUB>, and $T_{{\rm eff},\mathrm{ Aa}} = 6588\pm 58\,$ K for the primary, and $M_{\mathrm{ Ab}} = 0.8633\pm 0.0081\,$ M<SUB>☉</SUB>, $R_{\mathrm{ Ab}} = 1.154\pm 0.014\,$ R<SUB>☉</SUB>, and $T_{{\rm eff},\mathrm{ Ab}} = 4475\pm 68\,$ K for the secondary. Regarding the third body, we obtained significantly different results than those previously published. The period of the outer orbit is found to be 180.4 d, implying a minimum mass of $M_\mathrm{ B} = 0.871\pm 0.020\,$ M<SUB>☉</SUB>. Thus, we argue that V1200 Cen is a quadruple system with a secondary pair composed of two low-mass stars. Finally, we determined the ages of each eclipsing component using two evolution codes, namely MESA and CESTAM. We obtained ages of 16-18.5 and 5.5-7 Myr for the primary and the secondary, respectively. In particular, the secondary appears larger and hotter than that predicted at the age of the primary. We concluded that dynamical and tidal interactions occurring in multiples may alter the stellar properties and explain the apparent non-coevality of V1200 Centauri.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorMarcadon, F.
dc.contributor.authorHełminiak, K. G.
dc.contributor.authorMarques, J. P.
dc.contributor.authorPawłaszek, R.
dc.contributor.authorSybilski, P.
dc.contributor.authorKozłowski, S. K.
dc.contributor.authorRatajczak, Milena
dc.contributor.authorKonacki, M.
dc.date.accessioned2024-01-24T16:29:23Z
dc.date.available2024-01-24T16:29:23Z
dc.date.copyright2020-09-28
dc.date.issued2020
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number2
dc.description.versionORIGINAL_AUTHOR
dc.description.volume499
dc.identifier.doi10.1093/MNRAS/STAA3040
dc.identifier.issn0035-8711
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/100613
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2020MNRAS.499.3019M
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.pages3019-3033
dc.rightsOther
dc.sciencecloudnosend
dc.titleAnalysis of eclipsing binaries in multiple stellar systems: the case of V1200 Centauri
dc.typeJournalArticle
dspace.entity.typePublication