3.9k citations · 26.5k across the 228 of their papers we have counts for
14 papers · 2 filters
IRAS 18153-1651: an H II region with a possible wind bubble blown by a young main-sequence B star
V. V. Gvaramadze, J. Mackey, A. Y. Kniazev +5
We report the results of spectroscopic observations and numerical modelling of the H II region IRAS 18153-1651. Our study was motivated by the discovery of an optical arc and two m…
The metallicity dependence of envelope inflation in massive stars
D. Sanyal, N. Langer, D. Szécsi +2
Recently it has been found that models of massive stars reach the Eddington limit in their interior, which leads to dilute extended envelopes. We perform a comparative study of the…
Common envelope ejection in massive binary stars - Implications for the progenitors of GW150914 and GW151226
M. U. Kruckow, T. M. Tauris, N. Langer +3
The recently detected gravitational wave signals (GW150914 and GW151226) of the merger event of a pair of relatively massive stellar-mass black holes (BHs) calls for an investigati…
BONNSAI: correlated stellar observables in Bayesian methods
F. R. N. Schneider, N. Castro, L. Fossati +2
In an era of large spectroscopic surveys of stars and big data, sophisticated statistical methods become more and more important in order to infer fundamental stellar parameters su…
The Tarantula Massive Binary Monitoring project: II. A first SB2 orbital and spectroscopic analysis for the Wolf-Rayet binary R145
T. Shenar, N. D. Richardson, D. P. Sablowski +19
We present the first SB2 orbital solution and disentanglement of the massive Wolf-Rayet binary R145 (P = 159d) located in the Large Magellanic Cloud. The primary was claimed to hav…
Metallicity dependence of turbulent pressure and macroturbulence in stellar envelopes
Luca Grassitelli, Luca Fossati, Norbert Langer +3
Macroturbulence, introduced as a fudge to reproduce the width and shape of stellar absorption lines, reflects gas motions in stellar atmospheres. While in cool stars, it is thought…
Evidence of magnetic field decay in massive main-sequence stars
L. Fossati, F. R. N. Schneider, N. Castro +8
A significant fraction of massive main-sequence stars show strong, large-scale magnetic fields. The origin of these fields, their lifetimes, and their role in shaping the character…
Recycled Pulsars: Spins, Masses and Ages
Thomas M. Tauris
Recycled pulsars are mainly characterized by their spin periods, B-fields and masses. All these quantities are affected by previous interactions with a companion star in a binary s…
Models of low-mass helium white dwarfs including gravitational settling, thermal and chemical diffusion, and rotational mixing
Alina Istrate, Pablo Marchant, Thomas M. Tauris +3
A large number of extremely low-mass helium white dwarfs (ELM WDs) have been discovered in recent years. The majority of them are found in close binary systems suggesting they are…
Diagnostic of the unstable envelopes of Wolf-Rayet stars
Luca Grassitelli, Andre-Nicolas Chene', Debashis Sanyal +4
The envelopes of stars near the Eddington limit are prone to various instabilities. A high Eddington factor in connection with the Fe opacity peak leads to convective instability,…
The R136 star cluster dissected with Hubble Space Telescope/STIS. I. Far-ultraviolet spectroscopic census and the origin of HeII 1640 in young star clusters
Paul A. Crowther, S. M. Caballero-Nieves, K. A. Bostroem +17
We introduce a HST/STIS stellar census of R136a, the central ionizing star cluster of 30 Doradus. We present low resolution far-ultraviolet STIS/MAMA spectroscopy of R136 using 17…
Inferring supernova IIb/Ib/Ic ejecta properties from light curves and spectra: Correlations from radiative-transfer models
Luc Dessart, D. John Hillier, Stan Woosley +4
We present 1-D non-Local-Thermodynamic-Equilibrium time-dependent radiative-transfer simulations for a large grid of supernovae (SNe) IIb/Ib/Ic that result from the terminal explos…
A new route towards merging massive black holes
Pablo Marchant, Norbert Langer, Philipp Podsiadlowski +2
Recent advances in gravitational-wave astronomy make the direct detection of gravitational waves from the merger of two stellar-mass compact objects a realistic prospect. Evolution…
Rejuvenation of stellar mergers and the origin of magnetic fields in massive stars
Fabian R. N. Schneider, Philipp Podsiadlowski, Norbert Langer +2
Approximately 10% of massive OBA main-sequence (MS) and pre-MS stars harbour strong, large-scale magnetic fields. At the same time there is a dearth of magnetic stars in close bina…