A dusty veil shading Betelgeuse during its Great Dimming
M Montargès, E Cannon, E Lagadec, A de Koter… - Nature, 2021 - nature.com
Red supergiants are the most common final evolutionary stage of stars that have initial
masses between 8 and 35 times that of the Sun. During this stage, which lasts roughly …
masses between 8 and 35 times that of the Sun. During this stage, which lasts roughly …
The temperatures of red supergiants
We present a re-appraisal of the temperatures of red supergiants (RSGs) using their optical
and near-infrared spectral energy distributions (SEDs). We have obtained data of a sample …
and near-infrared spectral energy distributions (SEDs). We have obtained data of a sample …
The rise-time of Type II supernovae
S González-Gaitán, N Tominaga… - Monthly Notices of …, 2015 - academic.oup.com
We investigate the early-time light curves of a large sample of 223 Type II supernovae (SNe
II) from the Sloan Digital Sky Survey and the Supernova Legacy Survey. Having a cadence …
II) from the Sloan Digital Sky Survey and the Supernova Legacy Survey. Having a cadence …
Granulation in red giants: observations by the Kepler mission and three-dimensional convection simulations
S Mathur, S Hekker, R Trampedach… - The Astrophysical …, 2011 - iopscience.iop.org
The granulation pattern that we observe on the surface of the Sun is due to hot plasma rising
to the photosphere where it cools down and descends back into the interior at the edges of …
to the photosphere where it cools down and descends back into the interior at the edges of …
Using spectral modeling to break light-curve degeneracies of type II supernovae interacting with circumstellar material
L Dessart, WV Jacobson-Galán - Astronomy & Astrophysics, 2023 - aanda.org
A large fraction of red-supergiant stars seem to be enshrouded by circumstellar material
(CSM) at the time of explosion. Relative to explosions in a vacuum, this CSM causes both a …
(CSM) at the time of explosion. Relative to explosions in a vacuum, this CSM causes both a …
Is Betelgeuse really rotating? Synthetic ALMA observations of large-scale convection in 3D simulations of Red Supergiants
The evolved stages of massive stars are poorly understood, but invaluable constraints can
be derived from spatially resolved observations of nearby red supergiants, such as …
be derived from spatially resolved observations of nearby red supergiants, such as …
Explosion of red-supergiant stars: Influence of the atmospheric structure on shock breakout and early-time supernova radiation
L Dessart, DJ Hillier, E Audit - Astronomy & Astrophysics, 2017 - aanda.org
Early-time observations of Type II supernovae (SNe) 2013cu and 2013fs have revealed an
interaction of ejecta with material near the star surface. Unlike Type IIn SN 2010jl, which …
interaction of ejecta with material near the star surface. Unlike Type IIn SN 2010jl, which …
Clumpy dust clouds and extended atmosphere of the AGB star W Hydrae revealed with VLT/SPHERE-ZIMPOL and VLTI/AMBER-II. Time variations between pre …
K Ohnaka, G Weigelt, KH Hofmann - Astronomy & Astrophysics, 2017 - aanda.org
Aims. Our recent visible polarimetric images of the well-studied AGB star W Hya taken at pre-
maximum light (phase 0.92) with VLT/SPHERE-ZIMPOL have revealed clumpy dust clouds …
maximum light (phase 0.92) with VLT/SPHERE-ZIMPOL have revealed clumpy dust clouds …
The close circumstellar environment of Betelgeuse-V. Rotation velocity and molecular envelope properties from ALMA
We observed Betelgeuse using ALMA's extended configuration in band 7 (f≈ 340 GHz, λ≈
0.88 mm), resulting in a very high angular resolution of 18 mas. Using a solid body rotation …
0.88 mm), resulting in a very high angular resolution of 18 mas. Using a solid body rotation …
Radiative hydrodynamics simulations of red supergiant stars-IV. Gray versus non-gray opacities
Context. Red supergiants are massive evolved stars that contribute extensively to the
chemical enrichment of our Galaxy. It has been shown that convection in those stars …
chemical enrichment of our Galaxy. It has been shown that convection in those stars …