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Type IIb supernovae (SNe) are important candidates to understand mechanisms that drive the stripping of stripped-envelope (SE) supernova (SN) progenitors. While binary interactions and their high incidence are generally cited to favor them…

Solar and Stellar Astrophysics · Physics 2020-01-08 Niharika Sravan , Pablo Marchant , Vassiliki Kalogera

We describe the evolution of double degenerate binary systems, consisting of components obeying the zero temperature mass radius relationship for white dwarf stars, from the onset of mass transfer to one of several possible outcomes…

Astrophysics · Physics 2008-11-26 Vayujeet Gokhale , Xiao Meng Peng , Juhan Frank

We investigate the formation processes of the Galactic globular cluster (GC) omega Cen with multiple stellar populations based on our original hydrodynamical simulations with chemical enrichment by Type II supernovae (SNe II), asymptotic…

Astrophysics of Galaxies · Physics 2020-01-08 Kenji Bekki , Takuji Tsujimoto

The binaries PSR J1141-6545 and PSR B2303+46 each appear to contain a white dwarf which formed before the neutron star. We describe an evolutionary pathway to produce these two systems. In this scenario, the primary transfers its envelope…

Astrophysics · Physics 2009-11-07 Melvyn B. Davies , Hans Ritter , Andrew King

Based on evolutionary computations of 90 stellar models, we have analysed the impact of initial composition and core overshooting on the post-He-burning evolution and the associated nucleosynthesis of Super-AGB stars, pointing particular…

Astrophysics · Physics 2008-05-26 M. L. Pumo , L. Siess , R. A. Zappala'

We study the final stages of the common envelope (CE) evolution and find that a substantial fraction of the ejected mass does not reach the escape velocity. To reach this conclusion we use a self-similar solution under simplifying…

Solar and Stellar Astrophysics · Physics 2015-05-28 Amit Kashi , Noam Soker

(abridged) When stripped from their hydrogen-rich envelopes, stars with initial masses between $\sim$7 and 11 M$_\odot$ develop massive degenerate cores and collapse. Depending on the final structure and composition, the outcome can range…

High Energy Astrophysical Phenomena · Physics 2022-12-14 Savvas Chanlaridis , John Antoniadis , David R. Aguilera-Dena , Götz Gräfener , Norbert Langer , Nikolaos Stergioulas

Millisecond pulsars (MSPs) are generally believed to be old neutron stars (NSs), formed via type Ib/c core-collapse supernovae (SNe), which have been spun up to high rotation rates via accretion from a companion star in a low-mass X-ray…

Solar and Stellar Astrophysics · Physics 2015-06-17 Thomas M. Tauris , Debashis Sanyal , Sung-Chul Yoon , Norbert Langer

Context. Barium (Ba) stars are dwarf and giant stars enriched in elements heavier than iron produced by the slow neutron-capture process (s process). They belong to binary systems where the primary star evolved through the asymptotic giant…

Solar and Stellar Astrophysics · Physics 2018-12-12 B. Cseh , M. Lugaro , V. D'Orazi , D. B. de Castro , C. B. Pereira , A. I. Karakas , L. Molnár , E. Plachy , R. Szabó , M. Pignatari , S. Cristallo

Recent observations of supernovae (SNe) have indicated that a fraction of massive stars possess dense circumstellar medium (CSM) at the moment of their core collapses. They suggest the presence of additional activities of the SN progenitor…

Solar and Stellar Astrophysics · Physics 2023-12-22 Tomoki Matsuoka , Ryo Sawada

Much difficulty has so far prevented the emergence of a consistent scenario for the origin of Type Ib and Ic supernovae (SNe). Here, we follow a heuristic approach by examining the fate of helium stars in the mass range 4 to 12Msun, which…

Solar and Stellar Astrophysics · Physics 2020-10-14 Luc Dessart , Sung-Chul Yoon , David R. Aguilera-Dena , Norbert Langer

After more than three decades of investigation, the distribution of Ba stars in the e-log P diagram still defies our understanding. Recent smooth particle hydrodynamic simulations involving an asymptotic giant branch (AGB) primary have…

Solar and Stellar Astrophysics · Physics 2025-04-16 Pawel Krynski , L. Siess , A. Jorissen , P. J. Davis

Abridged. We aim to better characterise the evolution and fates, and determine updated nucleosynthetic yields of intermediate-mass stars between primordial and EMP metallicity (Z=1e-10, 1e-8, 1e-7, 1e-6 and 1e-5). We also probed…

Solar and Stellar Astrophysics · Physics 2022-12-14 P. Gil-Pons , C. L. Doherty , S. W. Campbell , J. Gutiérrez

Close white dwarf binaries make up a wide variety of objects such as double white dwarf binaries, which are possible SN Ia progenitors, cataclysmic variables, super soft sources, or AM CVn stars. The evolution and formation of close white…

Astrophysics · Physics 2007-05-23 M. R. Schreiber , A. Nebot Gomez-Moran , A. D. Schwope

We have performed detailed numerical calculations of the non-conservative evolution of close X-ray binary systems with intermediate-mass (2.0-6.0 M_sun) donor stars and a 1.3 M_sun accreting neutron star. We calculated the thermal response…

Astrophysics · Physics 2009-10-31 T. M. Tauris , E. P. J. van den Heuvel , G. J. Savonije

95% of all stars end their lives as white dwarfs. About 20% of the hot post-AGB stars are hydrogen deficient. Most of these are the result of a late helium-shell flash, but the evolutionary status of a fraction of about 10-20% of the…

Astrophysics · Physics 2007-05-23 Thomas Rauch , Elke Reiff , Klaus Werner , Falk Herwig , Lars Koesterke , Jeff W. Kruk

Mass transfer from an evolved donor star to its binary companion is a standard feature of stellar evolution in binaries. In wide binaries, the companion star captures some of the mass ejected in a wind by the primary star. The captured…

Solar and Stellar Astrophysics · Physics 2015-06-04 Hagai B. Perets , Scott J. Kenyon

We present new binary stellar evolution models that include the effects of tidal forces, rotation, and magnetic torques with the goal of testing Planetary Nebulae (PNe) shaping via binary interaction. We explore whether tidal interaction…

Solar and Stellar Astrophysics · Physics 2016-06-08 G. Garcia-Segura , E. Villaver , A. Manchado , N. Langer , S. -C. Yoon

Some binary systems composed of a white dwarf (WD) and a hot subdwarf (sdB) helium star will make contact within the helium burning lifetime of the sdB star. The accreted helium on the WD inevitably undergoes a thermonuclear instability,…

Solar and Stellar Astrophysics · Physics 2020-01-08 Evan B. Bauer , Christopher J. White , Lars Bildsten

Long-duration gamma-ray bursts (GRBs) are understood to be the final fate for a subset of massive, stripped envelope, rapidly rotating stars. Beyond this, our knowledge of the progenitor systems is limited. Using the BPASS (Binary…

High Energy Astrophysical Phenomena · Physics 2019-11-20 A. A. Chrimes , E. R. Stanway , J. J. Eldridge
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