263 citations · 2.8k across the 80 of their papers we have counts for
9 papers · 1 filter
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…
B field in OB stars (BOB): The outstandingly strong magnetic field in the evolved He-strong star CPD-62 2124
N. Castro, L. Fossati, S. Hubrig +12
The origin and evolution of magnetism in OB stars is far from being well understood. With approximately 70 magnetic OB stars known, any new object with unusual characteristics may…
B fields in OB stars (BOB): Concluding the FORS2 observing campaign
M. Schoeller, S. Hubrig, L. Fossati +16
The "B fields in OB stars" (BOB) collaboration is based on an ESO Large Programme, to study the occurrence rate, properties, and ultimately the origin of magnetic fields in massive…
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…
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…
A spectroscopic study of blue supergiant stars in the Sculptor galaxy NGC 55: chemical evolution and distance
Rolf Kudritzki, Miguel Urbaneja, Norberto Castro +5
Low resolution (4.5 to 5 Angstroem) spectra of 58 blue supergiant stars distributed over the disk of the Magellanic spiral galaxy NGC 55 in the Sculptor group are analyzed by means…