Showing 1 - 14 results of 14 for search '"stellar evolution"', query time: 0.05s Refine Results
  1. 1

    A Semi-analytical Model for Stellar Evolution in AGN Disks by Alexander J. Dittmann, Matteo Cantiello

    Published 2025-01-01
    “…We present a simplified model of stellar evolution in these dense environments, which exhibits exceptional agreement with full stellar evolution calculations at a minuscule fraction of the cost. …”
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    Dynamic processes during accretion into a black hole by G. S. Bisonvatyi-kogan

    Published 2001-01-01
    “…One of the most important new invention of this theory was a phenomenological treatment of the turbulent viscosity, known as “alpha” prescription, when the (rϕ) component of the stress tensor was approximated by (αP) with a unknown constant α This prescription played the role in the accretion disc theory as well important as the mixing-length theory of convection for stellar evolution. Sources of turbulence in the accretion disc are discussed, including nonlinear hydrodynamic turbulence, convection and magnetic filed role. …”
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  11. 11

    A Multiple-detection-heads Machine Learning Algorithm for Detecting White Dwarfs by Jiangchuan Zhang, Yude Bu, Mengmeng Zhang, Duo Xie, Zhenping Yi

    Published 2025-01-01
    “…White dwarfs (WDs) are the ultimate stage for approximately 97% of stars in the Milky Way and are crucial for studying stellar evolution and galaxy structure. Due to their small size and low luminosity, WDs are not easily observable. …”
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  12. 12

    The Observed Phase Space of Mass-loss History from Massive Stars Based on Radio Observations of a Large Supernova Sample by Itai Sfaradi, Assaf Horesh, Rob Fender, Lauren Rhodes, Joe Bright, David Williams-Baldwin, Dave A. Green

    Published 2025-01-01
    “…This sample comprises both archival data and our new observations of 99 CCSNe conducted with the AMI-LA radio array in a systematic approach devised to constrain the mass loss at different stages of stellar evolution. In the supernova (SN)–CSM interaction model, observing the peak of the radio emission of an SN provides the CSM density at a given radius (and therefore the mass-loss rate that deposited this CSM). …”
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  13. 13

    Assessing the Impact of Binary Systems on Microlensing Using SPISEA and PopSyCLE Population Simulations by Natasha S. Abrams, Jessica R. Lu, Casey Y. Lam, Michael S. Medford, Matthew W. Hosek Jr., Sam Rose

    Published 2025-01-01
    “…To simulate the population effects, we added multiple systems to Stellar Population Interface for Stellar Evolution and Atmospheres ( SPISEA ), which simulates stellar clusters. …”
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  14. 14

    The Secondary Component of the Extremely Low Mass Ratio Massive Binary HD 165246 Revealed by GHOST by C. N. Rodriguez, T. Ansin, G. A. Ferrero, O. G. Benvenuto, R. Gamen, N. I. Morrell, J. I. Arias, R. E. Higa, C. Putkuri, C. Johnston, K. Chiboucas, E. Deibert, C. R. Hayes, J.-E. Heo, M. Jeong, V. Kalari, E. Martioli, V. M. Placco, K. A. Venn, S. Xu, R. Diaz, M. Gomez-Jimenez, R. Ruiz-Carmona, C. Simpson, A. W. McConnachie, J. Pazder, G. Burley, T. A. M. Berg, J. G. Robertson, K. Labrie, J. Thomas-Osip

    Published 2025-01-01
    “…The primary star has a mass of M _a  = 22 ± 1 M _⊙ and a radius of R _a  = 7.0 ± 0.1 R _⊙ , while the secondary star has a mass of M _b  = 3.4 ± 0.1 M _⊙ and a radius of R _b  = 2.22 ± 0.02 R _⊙ . Stellar evolution models indicate that the system has undergone approximately two million years of evolution since its formation. …”
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