35 citations · 169 across the 14 of their papers we have counts for
15 papers
Post-merger rotational evolution of magnetised single hot subdwarfs results in slow rotation due to magnetic braking
Facundo D. Moyano, Zhengwei Liu, Zhanwen Han +3
Single hot subdwarfs are believed to form through mergers of helium-core white dwarfs, which can lead to large-scale magnetic fields generated during the merger, and may be observa…
Studying hot evolved stars with ultraviolet spectroscopy
Stephan Geier, Nicole Reindl, Matti Dorsch +7
Hot evolved stars are key objects to reconstruct the various evolutionary pathways of Sun-like stars, to probe binary interactions and the physics of supernovae. They serve as powe…
Evidence for neutron capture in heavy-metal hot subdwarfs: Far-UV spectroscopy of EC22536-5304 and LSIV-14 116
M. Dorsch, C. S. Jeffery, J. Deprince +8
Most hot subdwarfs (sdO/B) are low-mass core-helium-burning stars formed through binary interaction. A subgroup of intermediate He-rich sdOBs shows extreme heavy-metal (Z>30) enric…
The -processes nucleosynthesis during the formation of He-rich hot-subdwarf stars
T. Battich, M. M. Miller Bertolami, A. Weiss +3
It has been shown that proton ingestion episodes can happen in the formation of hot-subdwarf stars, and that neutron-capture processes are possible in those cases. Moreover, some h…
Impact of current uncertainties in the 12C+12C nuclear reaction rate on intermediate-mass stars and massive white dwarfs
Francisco C. De Gerónimo, Marcelo M. Miller Bertolami, Tiara Battich +6
Recent determinations of the total rate of the 12C+12C nuclear reaction show non-negligible differences with the reference reaction rate commonly used in previous stellar simulatio…
A self-synthesized origin of heavy metals in hot subdwarf stars?
T. Battich, M. M. Miller Bertolami, A. M. Serenelli +2
Some He-rich hot subdwarf stars (He-sdOBs) present high abundances of trans-iron elements, such as Sr, Y, Zr and Pb. Diffusion processes are important in hot subdwarf stars, and it…
Uncertainties in the 12C+12C reaction rate and their impact on the composition of ultra-massive WDs
F. C. De Gerónimo, M. M. Miller Bertolami, M. Catelan +1
Stars with initial masses 7 Msun . MZAMS . 9 Msun reach temperatures high enough to ignite C under degenerate conditions after the end of He-core burning (Garcia-Berro & Iben 1994)…
Forming Hot Subluminous Stars from Hierarchical Triples -- I. The Role of an Outer Tertiary on Formation Channels
Holly P. Preece, Adrian S. Hamers, Tiara Battich +1
We present evolutionary pathways for creating hot subdwarf OB (sdOB) stars from hierarchical triple configurations. We use the population synthesis code Multiple Stellar Evolution…
An evolutionary channel for CO-rich and pulsating He-rich subdwarfs
Marcelo M. Miller Bertolami, Tiara Battich, Alejandro H. Córsico +2
Recently a new class of hot subluminous stars strongly enriched in C and O have been discovered (CO-sdOs). These stars show abundances very similar to those observed in PG1159 star…
Asteroseismic signatures of the helium-core flash
Marcelo M. Miller Bertolami, Tiara Battich, Alejandro H. Corsico +2
All evolved stars with masses undergo a helium(He)-core flash at the end of their first stage as a giant star. Although theoretically predicted more than…
On the formation of hydrogen-deficient low-mass white dwarfs
Tiara Battich, Leandro G. Althaus, Alejandro H. Córsico
Two of the possibilities for the formation of low-mass () hydrogen-deficient white dwarfs are the occurrence of a very-late thermal pulse after th…
On the recent parametric determination of an asteroseismological model for the DBV star KIC 08626021
Francisco C. De Gerónimo, Tiara Battich, Marcelo M. Miller Bertolami +2
Asteroseismology of white dwarf (WD) stars is a powerful tool that allows to reveal the hidden chemical structure of WD and infer details about their evolution by comparing the obs…
A quantitative NLTE analysis of visual and ultraviolet spectra of four helium-rich subdwarf O stars
Markus Schindewolf, Peter Nemeth, Ulrich Heber +4
Hot subdwarfs represent a poorly understood late phase of stellar evolution. While binary evolution plays an important role for B-subdwarfs (sdB), the origin of the He dominated O-…
Pulsational instabilities driven by the mechanism in hot pre-horizontal branch stars I. The Hot-Flasher Scenario
Tiara Battich, Marcelo M. Miller Bertolami, Alejandro H. Córsico +1
The mechanism is a self-excitation mechanism of stellar pulsations which acts in regions inside the star where nuclear burning takes place. It has been shown that the mecha…
First axion bounds from a pulsating helium-rich white dwarf star
Tiara Battich, Alejandro Hugo Córsico, Leandro Gabriel Althaus +1
The Peccei-Quinn mechanism proposed to solve the CP problem of Quantum Chromodynamics has as consequence the existence of axions, hypothetical weakly interacting particles whose ma…