prikaz prve stranice dokumenta The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars
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The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars
Astrophysical Journal, 797 (2014), 1; 31. https://doi.org/10.1088/0004-637X/797/1/31
Torres, Guillermo; Sandberg Lacy, Claud H.; Pavlovski, Krešimir; Feiden, Gregory A.; Sabby, Jeffrey A.; Bruntt, Hans; Clausen, Jens Viggo

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Torres, G., Sandberg Lacy, C. H., Pavlovski, K., Feiden, G. A., Sabby, J. A., Bruntt, H. i Clausen, J. V. (2014). The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars. Astrophysical Journal, 797. (1). doi: 10.1088/0004-637X/797/1/31

Torres, Guillermo, et al. "The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars." Astrophysical Journal, vol. 797, br. 1, 2014. https://doi.org/10.1088/0004-637X/797/1/31

Torres, Guillermo, Claud H. Sandberg Lacy, Krešimir Pavlovski, Gregory A. Feiden, Jeffrey A. Sabby, Hans Bruntt i Jens Viggo Clausen. "The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars." Astrophysical Journal 797, br. 1 (2014). https://doi.org/10.1088/0004-637X/797/1/31

Torres, G., et al. (2014) 'The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars', Astrophysical Journal, 797(1). doi: 10.1088/0004-637X/797/1/31

Torres G, Sandberg Lacy CH, Pavlovski K, Feiden GA, Sabby JA, Bruntt H, i sur.. The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars. Astrophysical Journal [Internet]. 2014. [pristupljeno 18.04.2024.];797(1). doi: 10.1088/0004-637X/797/1/31

G. Torres, et al., "The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars", Astrophysical Journal, vol. 797, br. 1, 2014. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:138004. [Citirano: 18.04.2024.]

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Naslov (engleski)The G+M eclipsing binary V530 Orionis: a stringent test of magnetic stellar evolution models for low-mass stars
AutorGuillermo Torres
AutorClaud H. Sandberg Lacy
AutorKrešimir Pavlovski
AutorGregory A. Feiden
AutorJeffrey A. Sabby
AutorHans Bruntt
AutorJens Viggo Clausen
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Sažetak (engleski)
We report extensive photometric and spectroscopic observations of the 6.1 day period, G+M-type detached double-lined eclipsing binary V530 Ori, an important new benchmark system for testing stellar evolution models for low-mass stars. We determine accurate masses and radii for the components with errors of 0.7% and 1.3%, as follows: M A = 1.0038 ± 0.0066 M ☉, M B = 0.5955 ± 0.0022 M ☉, R A = 0.980 ± 0.013 R ☉, and R B = 0.5873 ± 0.0067 R ☉. The effective temperatures are 5890 ± 100 K (G1 V) and 3880 ± 120 K (M1 V), respectively. A detailed chemical analysis probing more than 20 elements in the primary spectrum shows the system to have a slightly subsolar abundance, with [Fe/H] = –0.12 ± 0.08. A comparison with theory reveals that standard models underpredict the radius and overpredict the temperature of the secondary, as has been found previously for other M dwarfs. On the other hand, models from the Dartmouth series incorporating magnetic fields are able to match the observations of the secondary star at the same age as the primary (~3 Gyr) with a surface field strength of 2.1 ± 0.4 kG when using a rotational dynamo prescription, or 1.3 ± 0.4 kG with a turbulent dynamo approach, not far from our empirical estimate for this star of 0.83 ± 0.65 kG. The observations are most consistent with magnetic fields playing only a small role in changing the global properties of the primary. The V530 Ori system thus provides an important demonstration that recent advances in modeling appear to be on the right track to explain the long-standing problem of radius inflation and temperature suppression in low-mass stars.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaAstrophysical Journal
Brojčani podacivol. 797, br. 1, 31
p-ISSN0004-637X
e-ISSN1538-4357
DOIhttps://doi.org/10.1088/0004-637X/797/1/31
URN:NBNurn:nbn:hr:217:138004
Datum objave publikacije2014
URL dokumentahttp://dx.doi.org/10.1088/0004-637X/797/1/31
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Javna napomena© 2014. The American Astronomical Society. Received 2014 July 22, accepted for publication 2014 October 22. Published 2014 November 21.
Datum i vrijeme pohrane2019-12-29 17:28:30