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Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - XI. CHIRON investigation of long-period binaries

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dc.abstract.enWe present the results of a spectroscopic campaign on eclipsing binaries with long orbital period (P = 20-75 d) carried out with the CHIRON spectrograph. Physical and orbital solutions for seven systems were derived from the V band, and I band ASAS, WASP, and TESS photometry, while radial velocities were calculated from high-quality optical spectra using a two-dimensional cross-correlation technique. The atmospheric parameters of the stars have been determined from the separated spectra. Most of our targets are composed of evolved stars (subgiants or red giants) but two systems show components in different phases of evolution and one possible merger. For four binaries, the masses and radii of the components were obtained with precision better than $3{{\ \rm per\ cent}}$ . These objects provide very valuable information on stellar evolution.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorRatajczak, Milena
dc.contributor.authorPawłaszek, R. K.
dc.contributor.authorHełminiak, K. G.
dc.contributor.authorKonacki, M.
dc.contributor.authorSybilski, P.
dc.contributor.authorKozłowski, S. K.
dc.contributor.authorLitwicki, M.
dc.contributor.authorSmith, A. M. S.
dc.contributor.authorMikołajczyk, P.
dc.contributor.authorAnderson, D. R.
dc.contributor.authorHellier, C.
dc.date.accessioned2024-01-25T16:09:01Z
dc.date.available2024-01-25T16:09:01Z
dc.date.copyright2020-11-30
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number4
dc.description.versionORIGINAL_AUTHOR
dc.description.volume500
dc.identifier.doi10.1093/MNRAS/STAA3488
dc.identifier.issn0035-8711
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/115024
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2021MNRAS.500.4972R
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.relation.pages4972-4988
dc.rightsOther
dc.sciencecloudnosend
dc.titleOrbital and physical parameters of eclipsing binaries from the ASAS catalogue - XI. CHIRON investigation of long-period binaries
dc.typeJournalArticle
dspace.entity.typePublication