Results 111 to 120 of about 720,446 (211)

A Rare Population of Intermediate-mass Helium Stars between Hot Subdwarfs and Wolf–Rayet Stars

The Astrophysical Journal
Helium stars stripped of their hydrogen envelopes represent pivotal phases in binary evolution, yet their origins, particularly within the intermediate-mass range of 2–8 M _⊙ , still remain poorly understood.
Gui-Yu Wang, Yong Shao, Jian-Guo He, Yu-Dong Nie, Xiao-Jie Xu, Xiang-Dong Li   +5 more
doaj   +1 more source

A Kinematic Study of Wolf–Rayet Stars at the Galactic Center. I. Binary Candidates and Constraints on the Binary Fraction

The Astrophysical Journal
We report the binary fraction of Wolf–Rayet (W-R) stars within 0.5 pc of the Galactic center obtained through the longest time-baseline (1994–2024) kinematic study of this population of stars.
Rory O. Bentley, Tuan Do, Andrea Ghez, Devin Chu, Anna Ciurlo, Abhimat K. Gautam, Zoë Haggard, Matthew W. Hosek Jr., Kelly Kosmo O’neil, Rebecca Lewis-Merrill, Gregory D. Martinez, Anna Pusack, Shoko Sakai, Jessica R. Lu, Mark R. Morris, Keith Matthews   +15 more
doaj   +1 more source

A helium-burning white dwarf binary as a supersoft X-ray source. [PDF]

Nature, 2023
Greiner J, Maitra C, Haberl F, Willer R, Burgess JM, Langer N, Bodensteiner J, Buckley DAH, Monageng IM, Udalski A, Ritter H, Werner K, Maggi P, Jayaraman R, Vanderspek R.   +14 more
europepmc   +1 more source

Short-lived radionuclide production by non-exploding Wolf-Rayet stars

, 1997
This paper presents an extension and update of previous calculations of the production by non-exploding Wolf-Rayet stars of radionuclides that could be responsible for certain isotopic anomalies discovered in meteoritic inclusions, or in meteoritic ...
Paulus, Guy, Meynet, Georges, Arnould, Marcel   +2 more
core  

Observation of nonvanishing optical helicity in thermal radiation from symmetry-broken metasurfaces. [PDF]

Sci Adv, 2023
Wang X, Sentz T, Bharadwaj S, Ray SK, Wang Y, Jiao D, Qi L, Jacob Z.   +7 more
europepmc   +1 more source

Mergers via failed common envelope as a route toward intermediate-mass stripped stars

Astronomy & Astrophysics
Stripped stars are a common product of binary stellar systems, spanning a wide mass range from Wolf-Rayet stars to hot subdwarfs and helium white dwarfs.
Picco A., Marchant P., Pauli D., Sana H.
doaj   +1 more source

The Long-period Spectroscopic Orbit and Dust Creation in the Wolf–Rayet Binary System WR 125

The Astrophysical Journal
Several long-period binaries with a carbon-rich Wolf–Rayet star and an OB star produce dust in their wind collisions. In eccentric binaries, this is seen most strongly near periastron passage.
Noel D. Richardson, Andrea R. Daly, Peredur M. Williams, Grant M. Hill, Victor I. Shenavrin, Izumi Endo, André-Nicolas Chené, Nicole Karnath, Ryan M. Lau, Anthony F. J. Moffat, Gerd Weigelt   +10 more
doaj   +1 more source

Visual Orbits of Wolf–Rayet Stars. I. The Orbit of the Dust-producing Wolf–Rayet Binary WR 137 Measured with the CHARA Array

The Astrophysical Journal
Classical Wolf–Rayet (W-R) stars are the descendants of massive OB stars that have lost their hydrogen envelopes and are burning helium in their cores prior to exploding as Type Ib/c supernovae.
Noel D. Richardson, Gail H. Schaefer, Jan J. Eldridge, Rebecca Spejcher, Amanda Holdsworth, Ryan M. Lau, John D. Monnier, Anthony F. J. Moffat, Gerd Weigelt, Peredur M. Williams, Stefan Kraus, Jean-Baptiste Le Bouquin, Narsireddy Anugu, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Aaron Labdon, Cyprien Lanthermann, Benjamin R. Setterholm   +21 more
doaj   +1 more source

Detection of additional Wolf-Rayet stars in the starburst cluster Westerlund 1 with

, 2006
Context.The young starburst cluster Westerlund 1 is one of the most massive clusters in the Local Group, harboring a huge population of massive stars. Aims.We searched for additional Wolf-Rayet stars in Westerlund 1.
J. H. Groh, C. L. Barbosa, A. Damineli, M. Teodoro   +3 more
core   +1 more source

Formation of WNL Stars in the MW and LMC Based on the k − ω Model

The Astrophysical Journal
We adopt a set of second-order differential equations ( k − ω model) to handle core convective overshooting in massive stars, simulate the evolution of nitrogen sequence Wolf–Rayet (WNL) stars with different metallicities and initial masses, both ...
Jijuan Si, Zhi Li, Yan Li
doaj   +1 more source