Search results for "HD 51452 -stars"

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Stochastic gravito-inertial modes discovered by CoRoT in the hot Be star HD 51452

2012

International audience; Context. Be stars are rapidly rotating stars with a circumstellar decretion disk. They usually undergo pressure and/or gravity pulsation modes excited by the κ-mechanism, i.e. an effect of the opacity of iron-peak elements in the envelope of the star. In the Milky Way, p-modes are observed in stars that are hotter than or equal to the B3 spectral type, while g-modes are observed at the B2 spectral type and cooler. Aims. We observed a B0IVe star, HD 51452, with the high-precision, high-cadence photometric CoRoT satellite and high-resolution, ground-based HARPS and SOPHIE spectrographs to study its pulsations in great detail. We also used the lower resolution spectra a…

starsBe -stars010504 meteorology & atmospheric sciencesBe starK-type main-sequence staroscillations -starsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsrotation01 natural sciences0103 physical sciencesAstrophysics::Solar and Stellar AstrophysicsStellar structureindividual010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysics0105 earth and related environmental sciences[PHYS]Physics [physics]PhysicsASTROFÍSICA ESTELARStellar rotationFlare starAstronomyAstronomy and AstrophysicsLight curveESPECTROSCOPIAHD 51452 -starsStarsT Tauri star13. Climate actionSpace and Planetary ScienceAstrophysics::Earth and Planetary Astrophysicsemission-line[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]Astronomy & Astrophysics

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