#stellar evolution
13 papers match
Long-term high-resolution spectroscopic monitoring of the evolved metal-poor binary PS Gem
V. G. Klochkova, V. E. Panchuk, J. K. Zhao +3
The paper reports three decades of high‑resolution spectroscopic observations of the metal‑poor binary star PS Gem, analyzing Hα line variations and radial velocities to characteri…
The physical origin of the maximum stellar size
Gautham N. Sabhahit, Jorick S. Vink
The authors explain the observed maximum radius of the most massive stars as a result of a transition to an Eddington‑enhanced mass‑loss regime, reproducing the Humphreys‑Davidson…
Unveiling the period-bounce population of cataclysmic variables: Spectroscopic and time-domain follow-up of eROSITA-selected candidates
S. Hernández-DÃaz, B. Stelzer, A. Schwope +9
The paper presents spectroscopic and time‑domain follow‑up of eROSITA‑selected cataclysmic variable candidates, confirming 24 new systems and showing they are consistent with perio…
A Four-dimensional Model-agnostic Probe into the Astrophysical Origins of Binary Black Hole Subpopulations
Anarya Ray, Vicky Kalogera
The paper presents a data-driven reconstruction of the four-dimensional joint distribution of binary black hole primary masses, mass ratios, effective inspiral spin, and effective…
High-mass binary black hole mergers from detailed binary evolution models
Max M. Briel, Olcay Bıyıklı, Tassos Fragos +10
The paper uses detailed binary evolution simulations to test whether super‑Eddington mass transfer in isolated binaries can produce the observed high‑mass binary black hole mergers…
Cataclysmic variables from SRG/eROSITA: new systems from eRASS1
A. D. Schwope, J. Brink, D. A. H. Buckley +12
The paper presents a new sample of 156 cataclysmic variable stars identified from the first eROSITA all‑sky X‑ray survey using a Random Forest classifier and follow‑up spectroscopy…