prikaz prve stranice dokumenta Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component
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Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component
Monthly Notices of the Royal Astronomical Society, 458 (2016), 2; 1964-1976. https://doi.org/10.1093/mnras/stw255
Tkachenko, A.; Matthews, J.M.; Aerts, C.; Pavlovski, Krešimir; Papics, P.I.; Zwintz, K.; Cameron, C.; Walker, G.A.H.; Kuschnig, R.; Degroote, P.; Debosscher, J.; Moravveji, E.; Kolbas, Vladimir; Guenther, D.B.; Moffat, A.F.J.; Rowe, J.F.; Rucinski, S.M.; Sasselov, D.; Weiss, W.W. Više autora...

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Tkachenko, A., Matthews, J., Aerts, C., Pavlovski, K., Papics, P., Zwintz, K. ... Weiss, W. (2016). Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component. Monthly Notices of the Royal Astronomical Society, 458. (2), 1964-1976. doi: 10.1093/mnras/stw255

Tkachenko, A., et al. "Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component." Monthly Notices of the Royal Astronomical Society, vol. 458, br. 2, 2016, str. 1964-1976. https://doi.org/10.1093/mnras/stw255

Tkachenko, A., J.M. Matthews, C. Aerts, Krešimir Pavlovski, P.I. Papics, K. Zwintz, C. Cameron, et al. "Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component." Monthly Notices of the Royal Astronomical Society 458, br. 2 (2016): 1964-1976. https://doi.org/10.1093/mnras/stw255

Tkachenko, A., et al. (2016) 'Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component', Monthly Notices of the Royal Astronomical Society, 458(2), str. 1964-1976. doi: 10.1093/mnras/stw255

Tkachenko A, Matthews J, Aerts C, Pavlovski K, Papics P, Zwintz K, i sur.. Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component. Monthly Notices of the Royal Astronomical Society [Internet]. 2016. [pristupljeno 15.04.2024.];458(2):1964-1976. doi: 10.1093/mnras/stw255

A. Tkachenko, et al., "Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component", Monthly Notices of the Royal Astronomical Society, vol. 458, br. 2, str. 1964-1976, 2016. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:585215. [Citirano: 15.04.2024.]

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Naslov (engleski)Stellar modelling of Spica, a high-mass spectroscopic binary with a beta Cep variable primary component
AutorA. Tkachenko
AutorJ.M. Matthews
AutorC. Aerts
AutorKrešimir Pavlovski
AutorP.I. Papics
AutorK. Zwintz
AutorC. Cameron
AutorG.A.H. Walker
AutorR. Kuschnig
AutorP. Degroote
AutorJ. Debosscher
AutorE. Moravveji
AutorVladimir Kolbas
AutorD.B. Guenther
AutorA.F.J. Moffat
AutorJ.F. Rowe
AutorS.M. Rucinski
AutorD. Sasselov
AutorW.W. Weiss
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Astronomija i astrofizika
Sažetak (engleski)
Binary stars provide a valuable test of stellar structure and evolution, because the masses of the individual stellar components can be derived with high accuracy and in a model-independent way. In this work, we study Spica, an eccentric double-lined spectroscopic binary system with a beta Cep type variable primary component. We use state-of-the-art modelling tools to determine accurate orbital elements of the binary system and atmospheric parameters of both stellar components. We interpret the short-period variability intrinsic to the primary component, detected on top of the orbital motion both in the photometric and spectroscopic data. The non-local thermodynamic equilibrium based spectrum analysis reveals two stars of similar atmospheric chemical composition consistent with the present-day cosmic abundance standard. The masses and radii of the stars are found to be 11.43±1.15 Msun and 7.21±0.75 Msun, and 7.47±0.54 Rsun and 3.74±0.53 Rsun for the primary and secondary, respectively. We find the primary component to pulsate in three independent modes, of which one is identified as a radial mode, while the two others are found to be non-radial, low degree l modes. The frequency of one of these modes is an exact multiple of the orbital frequency, and the l=m=2 mode identification suggests a tidal nature for this particular mode. We find a very good agreement between the derived dynamical and evolutionary masses for the Spica system to within the observational errors of the measured masses. The age of the system is estimated to be 12.5±1 Myr.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaMonthly Notices of the Royal Astronomical Society
Brojčani podacivol. 458, br. 2, str. 1964-1976
p-ISSN0035-8711
e-ISSN1365-2966
DOIhttps://doi.org/10.1093/mnras/stw255
URN:NBNurn:nbn:hr:217:585215
Datum objave publikacije2016
ProjektŠifra: IP-2014-09-8656
Naziv (hrvatski): Zvijezde i prašina: struktura, sastav i interakcija
Kratica: STARDUST
Voditelj: Krešimir Pavlovski
Pravna nadležnost: Hrvatska
Financijer: HRZZ
Linija financiranja: IP
URL dokumentahttps://academic.oup.com/mnras/article/458/2/1964/2588998
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Javna napomena© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Received: 29 June 2015. Revision Received: 27 January 2016. Accepted: 28 January 2016. Published: 02 February 2016.
Datum i vrijeme pohrane2020-02-09 15:18:26