First radio observations of SN 2023fyq detect a dense circumstellar shell with mass-loss rate ~0.004 solar masses per year ejected 0.7-3 years before explosion, consistent with a merger origin.
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Synthetic observables from tECSN models show slower early red-color decline due to higher Ti/Cr and a late-time 12.8 μm Ne II line that strengthens over time, unlike comparable CO deflagration models.
Type Ib supernovae are systematically bluer than Type Ic supernovae in optical colors, likely due to helium-rich versus helium-poor progenitors.
MOFAT applied to SN2024ggi shows CO triggering inner SiO formation with a receding edge, order-of-magnitude mass drop, clumping signatures, and no dust formation.
Physics-based annual TSI reconstruction over three millennia yields a maximum difference of 1.04 W/m² in 50-year running means.
The paper outlines the goals for the SKA-Mid Galactic Plane survey at 10-15 GHz to deliver the first uniform high-resolution view of ionized structures and feedback in the Milky Way.
DTDs measured for LMC Cepheids recover progenitor age ranges consistent with non-canonical period-age relations that include overshooting and rotation.
Adiabatic mass-loss models for massive helium stars give critical mass ratios 0.7-3.0 on the main sequence and 1.5-27 on the Hertzsprung gap, lowered by winds and adjusted by isotropic re-emission.
A more efficient 12C+12C rate extends carbon burning, produces less compact pre-supernova structures, and enhances s-process yields of elements heavier than Fe in supernova ejecta from 15-40 solar mass stars.
Perspective paper on the importance of circumstellar environments around evolved massive stars for supernova studies and the observational advances expected from the Square Kilometre Array.
citing papers explorer
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The first radio view of a type Ibn supernova in SN 2023fyq: Understanding the mass-loss history in the last decade before the explosion
First radio observations of SN 2023fyq detect a dense circumstellar shell with mass-loss rate ~0.004 solar masses per year ejected 0.7-3 years before explosion, consistent with a merger origin.
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Observational signatures of thermonuclear electron-capture supernovae -- Ne II line strengthening and color evolution as traces of the explosion mechanism
Synthetic observables from tECSN models show slower early red-color decline due to higher Ti/Cr and a late-time 12.8 μm Ne II line that strengthens over time, unlike comparable CO deflagration models.
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Type Ib Supernovae are bluer than Type Ic Supernovae
Type Ib supernovae are systematically bluer than Type Ic supernovae in optical colors, likely due to helium-rich versus helium-poor progenitors.
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Probing the 3D Structures of Supernovae through IR Signatures of CO and SiO
MOFAT applied to SN2024ggi shows CO triggering inner SiO formation with a receding edge, order-of-magnitude mass drop, clumping signatures, and no dust formation.
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Reconstruction of annual solar irradiance over the last three millennia
Physics-based annual TSI reconstruction over three millennia yields a maximum difference of 1.04 W/m² in 50-year running means.
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The 10-15 GHz radio continuum survey of the Galactic Plane with SKAO
The paper outlines the goals for the SKA-Mid Galactic Plane survey at 10-15 GHz to deliver the first uniform high-resolution view of ionized structures and feedback in the Milky Way.
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Connecting Stellar Population Surveys to Stellar Evolution with Delay-time Distributions: Application to LMC Classical Cepheids
DTDs measured for LMC Cepheids recover progenitor age ranges consistent with non-canonical period-age relations that include overshooting and rotation.
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Adiabatic Mass Loss In Binary Stars. VI. Massive Helium Binary Stars
Adiabatic mass-loss models for massive helium stars give critical mass ratios 0.7-3.0 on the main sequence and 1.5-27 on the Hertzsprung gap, lowered by winds and adjusted by isotropic re-emission.
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Impact of Sub-2.5 MeV 12C+12CResonances on the Production of Elements from C to Pd in Core-Collapse Supernovae
A more efficient 12C+12C rate extends carbon burning, produces less compact pre-supernova structures, and enhances s-process yields of elements heavier than Fe in supernova ejecta from 15-40 solar mass stars.
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Evolved massive stars and their impact on their environment
Perspective paper on the importance of circumstellar environments around evolved massive stars for supernova studies and the observational advances expected from the Square Kilometre Array.