Absolute parameters of young stars: HX Velorum

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dc.authoridBudding, Edwin/0000-0002-7346-0177
dc.contributor.authorBlackford, M. G.
dc.contributor.authorErdem, A.
dc.contributor.authorSurgit, D.
dc.contributor.authorOzkardes, B.
dc.contributor.authorBudding, E.
dc.contributor.authorButland, R.
dc.contributor.authorDemircan, O.
dc.date.accessioned2025-01-27T20:20:54Z
dc.date.available2025-01-27T20:20:54Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe present combined photometric and spectroscopic analyses of the southern multiple star HX Vel. High-resolution spectra of this system were taken at the University of Canterbury Mt. John Observatory in the years 2009-2015. Absolute parameters for HX Vel tend to confirm its young and near-main-sequence nature. We specify the main adopted parameters of the (non-eclipsing) close binary as follows: M-1 = 8.5 +/- 1.7, M-2 = 5.4 +/- 1.2, R-1 = 5.0 +/- 0.3, R-2 = 3.1 +/- 0.2, (circle dot); T-1 25 000 +/- 1300, T-2 20 000 +/- 2500 (K); systemic M-V -4.2 +/- 0.2. These parameters are sensitive to the low inclination, where we find a small disparity between the photometrically optimal 28 +/- 2 degrees and an adopted value of 26 degrees that gives better consistency with main-sequence stellar modelling. The relationship of HX Vel to the galactic cluster IC 2395 and OB association Vela OB1C is also considered, in the context of photometric parallaxes found for HX Vel and other cluster members.
dc.description.sponsorshipSchool of Chemical and Physical Sciences of the Victoria University of Wellington; Royal Astronomical Society of New Zealand; Variable Stars South section
dc.description.sponsorshipGenerous allocations of time on the 1m McLennnan Telescope and HERCULES spectrograph at the University of Canterbury Mt John Observatory in support of the Southern Binaries Programme have been made available through its TAC and supported by its Director, Dr. K. Pollard and previous Director, Prof. J. B. Hearnshaw. Useful help at the telescope were provided by the UCMJOmanagement (N. Frost and previously A. Gilmore and P. Kilmartin). Considerable assistance with the use and development of the HRSP software (leading up to the latest version 5) was given by its author Dr. J. Skuljan. Encouragement and support for this programme have been shown by the the School of Chemical and Physical Sciences of the Victoria University of Wellington, as well as the Royal Astronomical Society of New Zealand and its Variable Stars South section (http://www.variablestarssouth.org).
dc.identifier.doi10.1093/mnras/stz1136
dc.identifier.endpage167
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.issue1
dc.identifier.startpage161
dc.identifier.urihttps://doi.org/10.1093/mnras/stz1136
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21842
dc.identifier.volume487
dc.identifier.wosWOS:000474907100013
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherOxford Univ Press
dc.relation.ispartofMonthly Notices of The Royal Astronomical Society
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectbinaries: close
dc.subjectstars: early-type
dc.subjectstars: individual HX Vel
dc.subjectGalaxy: stellar content
dc.titleAbsolute parameters of young stars: HX Velorum
dc.typeArticle

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