Extreme Tidal Stripping May Explain the Overmassive Black Hole in Leo I: A Proof of Concept
The Astrophysical Journal Letters, 2023 A recent study found dynamical evidence of a supermassive black hole of ∼3 × 10 ^6 M _⊙ at the center of Leo I, the most distant dwarf spheroidal galaxy of the Milky Way. This black hole, comparable in mass to the Milky Way’s Sgr A*, places the system >2
Fabio Pacucci, Yueying Ni, Abraham Loeb
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Galaxies, 2023 Magnetism is a ubiquitous property of astrophysical plasmas, yet stellar magnetism still remains far from being completely understood. In this review, we describe recent observational and modelling efforts and progress to expand our knowledge of the ...
Zsolt Keszthelyi
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The independency of stellar mass-loss rates on stellar X-ray luminosity and activity level based on solar X-ray flux and solar wind observations [PDF]
, 2011 Stellar mass-loss rates are an important input ingredient for stellar evolution models since they determine stellar evolution parameters such as stellar spin-down and increase in stellar luminosity through the lifetime of a star.
O. Cohen
semanticscholar +1 more source
Formulating Mass-loss Rates for Sun-like Stars: A Hybrid Model Approach
The Astrophysical Journal, 2023 We observe an enhanced stellar wind mass-loss rate from low-mass stars exhibiting higher X-ray flux. This trend, however, does not align with the Sun, where no evident correlation between X-ray flux and mass-loss rate is present.
Munehito Shoda +2 more
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FUEL EFFICIENT GALAXIES: SUSTAINING STAR FORMATION WITH STELLAR MASS LOSS [PDF]
, 2010 We examine the importance of secular stellar mass loss for fueling ongoing star formation in disk galaxies during the late stages of their evolution.
Samuel N. Leitner, A. Kravtsov
semanticscholar +1 more source
The realm of the Galactic globular clusters and the mass of their primordial clouds [PDF]
, 2016 By adopting the empirical constraints related to the estimates of Helium enhancement ($\Delta Y$), present mass ratio between first and second stellar generations ($M_{1G}/M_{2G}$) and the actual mass of Galactic globular clusters ($M_{GC}$), we envisage
Cassisi, Santi +3 more
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Mass Loss and Stellar Rotation [PDF]
Symposium - International Astronomical Union, 2004 The observational evidence for non-spherical winds of rapidly rotating hot and cool stars is presented. Models to explain equatorially enhanced winds of AGB stars and of hot B[e]-supergiants are discussed. We distinguish between models with a disk due to an increased equatorial mass flux and those with a disk due to spherical mass loss with a wind ...
openaire +1 more source
The Gaia–Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age [PDF]
Astronomical Journal, 2020 Studies of exoplanet demographics require large samples and precise constraints on exoplanet host stars. Using the homogeneous Kepler stellar properties derived using the Gaia Data Release 2 by Berger et al., we recompute Kepler planet radii and incident
T. Berger +4 more
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Comparison of theoretical radiation-driven winds from stars and discs [PDF]
, 1999 We compare models of line-driven winds from accretion discs and single spherical stars. We look at the problem of scaling mass-loss rates and velocities of stellar and disc winds with model parameters.
Proga, Daniel
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Empirical determination of the integrated red giant and horizontal branch stellar mass-loss in ω Centauri [PDF]
, 2011 We herein determine the average integrated mass-loss from stars belonging to the dominant metal-poor population ([Fe/H] ∼−1.7) of the Galactic globular cluster ω Centauri (NGC 5139) during their red giant and horizontal branch (HB) evolution.
I. McDonald +2 more
semanticscholar +1 more source