Reference : The radius and mass of the close solar twin 18 Scorpii derived from asteroseismology and...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/109064
The radius and mass of the close solar twin 18 Scorpii derived from asteroseismology and interferometry
English
Bazot, Michaël [Centro de Astrofísica da Universidade do Porto > >]
Ireland, M. J. [University of Sydney > School of Physics > Sydney Institute for Astronomy (SIfA) >]
Huber, D. [University of Sydney > School of Physics > Sydney Institute for Astronomy (SIfA) >]
Bedding, T. R. [University of Sydney > School of Physics > Sydney Institute for Astronomy (SIfA) >]
Broomhall, A.-M. [University of Birmingham > School of Physics and Astronomy >]
Campante, A.-M. [Centro de Astrofísica da Universidade do Porto > >]
Carfantan, H. [Université de Toulouse > Laboratoire Astrophysique de Toulouse - Tarbes >]
Chaplin, W. J. [University of Birmingham > School of Physics and Astronomy >]
Elsworth, Y. [University of Birmingham > School of Physics and Astronomy >]
Melendez, J. [Centro de Astrofísica da Universidade do Porto > >]
Petit, Pascal [Université de Toulouse > Laboratoire Astrophysique de Toulouse - Tarbes >]
Théado, Sylvie [Université de Toulouse > Laboratoire Astrophysique de Toulouse - Tarbes >]
Van Grootel, Valérie mailto [Université de Toulouse > Laboratoire Astrophysique de Toulouse - Tarbes > > >]
Arentoft, T. [Aarhus Universitet > Institut for Fysik og Astronomi >]
Asplund, M. [> >]
Castro, M. [> >]
Christensen-Dalsgaard, J. [> >]
Do Nascimento, J. D. [> >]
Dintrans, B. [> >]
Dumusque, X. [> >]
Kjeldsen, H. [> >]
McAlister, H. A. [> >]
Metcalfe, T. S. [> >]
Monteiro, M.J.P.F.G. [> >]
Santos, N. C. [> >]
Sousa, S. [> >]
Sturmann, J. [> >]
Sturmann, L. [> >]
Ten Brummelaar, T. N. [> >]
Turner, N. [> >]
Vauclair, S. [> >]
Feb-2011
Astronomy and Astrophysics
EDP Sciences
526
L4
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] stars: individual: 18 Sco ; stars: oscillations ; techniques: radial velocities ; techniques: interferometric ; methods: data analysis
[en] The growing interest in solar twins is motivated by the possibility of comparing them directly to the Sun. To carry on this kind of analysis, we need to know their physical characteristics with precision. Our first objective is to use asteroseismology and interferometry on the brightest of them: 18 Sco. We observed the star during 12 nights with HARPS for seismology and used the PAVO beam-combiner at CHARA for interferometry. An average large frequency separation 134.4 ± 0.3 μHz and angular and linear radiuses of 0.6759 ± 0.0062 mas and 1.010 ± 0.009 Rsun were estimated. We used these values to derive the mass of the star, 1.02 ± 0.03 Msun.
http://hdl.handle.net/2268/109064

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
aa15679-10.pdfPublisher postprint442.68 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.