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
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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
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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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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
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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
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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
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On the Diversity of Mixing and Helium Core Masses of B-type Dwarfs from Gravity-mode Asteroseismology [PDF]
Astrophysical Journal, 2022 The chemical evolution of the galaxy is largely guided by the yields from massive stars. Their evolution is heavily influenced by their internal mixing, allowing the stars to live longer and yield a more massive helium core at the end of their main ...
M. G. Pedersen
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Asteroseismology of the multiple stellar populations in the globular cluster M4 [PDF]
Astronomy & Astrophysics, 2022 We present a new asteroseismic analysis of the stars in the globular cluster (GC) M4 based on the data collected by the K2 mission. We report the detection of solar-like oscillation in 37 stars, 32 red giant branch (RGB) and six red horizontal branch ...
M. Tailo +8 more
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Integrated mass loss of evolved stars in M4 using asteroseismology [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Mass loss remains a major uncertainty in stellar modelling. In low-mass stars, mass loss is most significant on the red giant branch (RGB), and will impact the star’s evolutionary path and final stellar remnant.
Madeline Howell +3 more
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