Results 131 to 140 of about 9,582 (206)
Critical Metallicity of Cool Supergiant Formation. II. Physical Origin
The Astrophysical JournalThis study investigates the physical origin of the critical metallicity required for the formation of cool supergiants, as revealed by stellar evolution models.
Po-Sheng Ou, Ke-Jung Chen
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On the formation of a 33 solar-mass black hole in a low-metallicity binary
The Open Journal of AstrophysicsA $33\,M_\odot$ black hole (BH) was recently discovered in an 11.6-year binary only 590 pc from the Sun. The system, Gaia BH3, contains a $0.8\,M_\odot$ low-metallicity giant ($\rm [M/H]=-2.2$) that is a member of the ED-2 stellar stream.
Kareem El-Badry
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Photospheric Helium Abundance in Cool Giants: A Comprehensive Study
The Astrophysical JournalHigh-resolution optical spectra of 16 red giants, two early asymptotic giant branch (AGB) stars, and two supergiants, having no/minimal - to super-lithium (Li)-rich abundances, are analyzed to investigate the helium (He)-enhancement. The spectra of eight
B. P. Hema, Gajendra Pandey
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A Late-time View of the Progenitor Candidates of the Type II-P SN 2009ib and SN 2012ec
The Astrophysical Journal LettersThe progenitors of Type II-P supernovae (SNe) are generally considered to be red supergiants. SN 2009ib and SN 2012ec are two Type II-P SNe for which progenitor candidates have been identified in preexplosion images.
Yi-Han Zhao +5 more
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The Mass of the Vela Pulsar Progenitor and the Age of the Vela-Puppis Complex
The Astrophysical JournalThe association of the Vela Pulsar with the Vela Supernova Remnant has long supported the hypothesis that core-collapse supernovae yield neutron stars, but its surrounding stellar population now offers new insights into progenitor evolution.
Jeremiah W. Murphy +6 more
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The evolution of massive stars: bridging the gap in the Local Group. [PDF]
Philos Trans A Math Phys Eng Sci, 2017 Massey P, Neugent KF, Levesque EM.
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A Shock Crashing into Confined Dense Circumstellar Matter Brightens the Nascent SN 2023ixf
The Astrophysical JournalRed supergiants may experience a short-lived period of episodic mass loss rather than steady winds before their core collapses, leading to dense circumstellar matter (CSM) close to core-collapse supernovae (SNe). Interaction of SN ejecta with such nearby
Maokai Hu, Lifan Wang, Xiaofeng Wang
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Bridging the gap: from massive stars to supernovae. [PDF]
Philos Trans A Math Phys Eng Sci, 2017 Maund JR +3 more
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Luminous blue variables and the fates of very massive stars. [PDF]
Philos Trans A Math Phys Eng Sci, 2017 Smith N.
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Predicting the nature of supernova progenitors. [PDF]
Philos Trans A Math Phys Eng Sci, 2017 Groh JH.
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