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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…
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…
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…
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…
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…
B fields in OB stars (BOB): Detection of a magnetic field in the He-strong star CPD-57° 3509
N. Przybilla, L. Fossati, S. Hubrig +12
We report the detection of a magnetic field in the helium-strong star CPD-57 3509 (B2 IV), a member of the Galactic open cluster NGC3293, and characterise the star's atmospheric an…