Results 81 to 90 of about 412,693 (262)
Critical Metallicity of Cool Supergiant Formation. I. Effects on Stellar-mass Loss and Feedback
The Astrophysical Journal, 2023 This paper systematically studies the relation between metallicity and mass loss of massive stars. We perform one-dimensional stellar evolution simulations and build a grid of ∼2000 models with initial masses ranging between 11 and 60 M _⊙ and absolute ...
Po-Sheng Ou +3 more
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Effect of mass-loss due to stellar winds on the formation of supermassive black hole seeds in dense nuclear star clusters [PDF]
, 2021 Arpan Das +3 more
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The initial/final mass relation for stellar evolution with mass loss [PDF]
International Astronomical Union Colloquium, 1981 The relation between initial and final masses is discussed under consideration of changing theoretical concepts and new empirical data on masses of white dwarfs and nuclei of planetary nebulae. It is concluded that presently adopted schemes of evolution need revision, and that no universal relation exists.The strongest evidence for large amounts of ...
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The Astrophysical JournalWe use Athena++ to study the hydrodynamics of repeated star−accretion disk collisions close to supermassive black holes, and we discuss their implications for the origin of quasi-periodic eruptions (QPEs) and other repeating nuclear transients.
Philippe Z. Yao +4 more
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MOCCA Survey Database I: Dissolution of tidally filling star clusters harbouring BH subsystems
, 2019 We investigate the dissolution process for dynamically evolving star clusters embedded in an external tidal field by exploring the MOCCA Survey Database I, with focus on the presence and evolution of a stellar-mass black hole subsystem. We argue that the
Askar, Abbas +5 more
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Post-AGB Variables and Stellar Mass-Loss [PDF]
Symposium - International Astronomical Union, 2000 A brief review is given of the various types of star which are thought to be in the immediate post-AGB stage of evolution. The paper then concentrates on the properties of the RCB stars and particularly on the mass-loss process in these stars. It is suggested that grain formation takes place over the cool regions of giant convection cells in a super ...
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The Astrophysical Journal LettersRecent asteroseismic determinations of Δ M , the integrated mass loss on the red giant branch (RGB), for fields stars show a trend of Δ M decreasing as metallicity increases .
J. MacDonald, D. J. Mullan
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Fine-tuned Supernova or Failed Explosion? Decoding the Origins of the G3425 Binary
The Astrophysical Journal LettersA binary system (G3425) consisting of a massive unseen component and a red giant star on a nearly circular orbit was recently discovered. The formation of such a system is puzzling because orbital stability generally breaks down due to the large mass ...
Zsolt Regály +2 more
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Surface brightness fluctuations, tracers of stellar mass-loss? [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractWe present optical and IR integrated colors and SBF magnitudes, computed from stellar population synthesis models that include emission from the dusty envelopes surrounding mass-loosing TP-AGB stars. We explore the effects of varying the mass-loss rate by one order of magnitude around the fiducial value, modifying accordingly both the stellar ...
Rosa A. González-Lópezlira +4 more
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Mass Ejection Driven by Sudden Energy Deposition in Stellar Envelopes
The Astrophysical JournalA number of stellar astrophysical phenomena, such as tidal novae and planetary engulfment, involve sudden injection of subbinding energy in a thin layer within the star, leading to mass ejection of the stellar envelope.
Nicholas J. Corso, Dong Lai
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