Internal magnetic fields in 13 red giants detected by asteroseismology [PDF]
Astronomy & Astrophysics, 2023 While surface fields have been measured for stars across the HR diagram, internal magnetic fields remain largely unknown. The recent seismic detection of magnetic fields in the cores of several Kepler red giants has opened a new avenue to understand ...
Gang Li +4 more
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The Potential of Asteroseismology to Resolve the Blue Supergiant Problem [PDF]
Astrophysical Journal Letters, 2023 Despite major progress in our understanding of massive stars, concerning discrepancies still remain between observations and theory. Most notable are the numerous stars observed beyond the theoretical main sequence, an evolutionary phase expected to be ...
E. Bellinger +3 more
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Making waves in massive star asteroseismology [PDF]
Astrophysics and Space Science, 2023 Massive stars play a major role not only in stellar evolution but also galactic evolution theory. This is because of their dynamical interaction with binary companions, but also because their strong winds and explosive deaths as supernovae provide ...
D. Bowman
semanticscholar +1 more source
Age-dating the young open cluster UBC1 with g-mode asteroseismology, gyrochronology, and isochrone fitting [PDF]
Astronomy & Astrophysics, 2023 UBC 1 is an open cluster discovered in Gaia data and located near the edge of the Transiting Exoplanet Survey Satellite's (TESS) continuous viewing zone.
D. Fritzewski +5 more
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Asteroseismology of evolved stars to constrain the internal transport of angular momentum. VI. Testing a parametric formulation for the azimuthal magneto-rotational instability [PDF]
Astronomy & Astrophysics, 2023 Asteroseismic measurements of the internal rotation rate in evolved stars pointed out to a lack of angular momentum (AM) transport in stellar evolution models.
F. Moyano +3 more
semanticscholar +1 more source
Gravitational-wave asteroseismology with fundamental modes from compact binary inspirals. [PDF]
Nat Commun, 2020 Gravitational waves (GWs) from binary neutron stars encode unique information about ultra-dense matter through characterisic signatures associated with a variety of phenomena including tidal effects during the inspiral.
Pratten G, Schmidt P, Hinderer T.
europepmc +3 more sources
Giant Planet Engulfment by Evolved Giant Stars: Light Curves, Asteroseismology, and Survivability [PDF]
Astrophysical Journal, 2023 About ten percent of Sun-like (1–2 M ⊙) stars will engulf a 1–10 M J planet as they expand during the red giant branch (RGB) or asymptotic giant branch (AGB) phase of their evolution.
Christopher E. O’Connor +3 more
semanticscholar +1 more source
Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis [PDF]
Astronomical Journal, 2023 The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M ⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun.
T. Metcalfe +33 more
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Hipparcos Luminosities and Asteroseismology [PDF]
Highlights of Astronomy, 2000 AbstractAsteroseismology involves using the resonant frequencies of a star to infer details about its internal structure and evolutionary state. Large efforts have been made and continue to be made to measure oscillation frequencies with both ground- and space-based telescopes, with typical precisions of one part in 103–104.
T. R. Bedding
openalex +5 more sources
Discovery of post-mass-transfer helium-burning red giants using asteroseismology [PDF]
Nature Astronomy, 2022 A star expands to become a red giant when it has fused all the hydrogen in its core into helium. If the star is in a binary system, its envelope can overflow onto its companion or be ejected into space, leaving a hot core and potentially forming a ...
Yaguang Li +16 more
semanticscholar +1 more source