Search results for "Stars: individual: BM Sco"

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VLTI/AMBER spectro-interferometry of the late-type supergiants V766 Cen (=HR 5171 A), σ Oph, BM Sco, and HD 206859

2017

Aims. We add four warmer late-type supergiants to our previous spectro-interferometric studies of red giants and supergiants. Methods. We measure the near-continuum angular diameter, derive fundamental parameters, discuss the evolutionary stage, and study extended atmospheric atomic and molecular layers. Results. V766 Cen (=HR 5171 A) is found to be a high-luminosity (log L/L = 5.8 ± 0.4) source of effective temperature 4290 ± 760 K and radius 1490 ± 540 R, located in the Hertzsprung-Russell (HR) diagram close to both the Hayashi limit and Eddington limit; this source is consistent with a 40 M evolutionary track without rotation and current mass 27-36 M. V766 Cen exhibits Na i in emission a…

Hertzsprung–Russell diagramindividual: BM Sco [Stars]FOS: Physical sciencesAstrophysics01 natural sciencesLuminositysymbols.namesake0103 physical sciencesStars: individual: BM ScoRed supergiantStars: mass-lossYellow hypergiantatmospheres [Stars]010303 astronomy & astrophysicsSolar and Stellar Astrophysics (astro-ph.SR)Physicsmass-loss [Stars]010308 nuclear & particles physicsAstronomy and AstrophysicsEffective temperatureStars: individual: V766 CenAstrophysics - Solar and Stellar AstrophysicsSupergiantsSpace and Planetary ScienceEddington luminosityTechniques: interferometricsymbolsCircumstellar dustinterferometric [Techniques]individual: V766 Cen [Stars]Stars: atmospheresSupergiant
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