8.6k citations · 12.9k across the 75 of their papers we have counts for
18 papers · 1 filter
Abundances of massive stars: some recent developments
T. Morel
Thanks to their usefulness in various fields of astrophysics (e.g. mixing processes in stars, chemical evolution of galaxies), the last few years have witnessed a large increase in…
New insights into the nature of the peculiar star theta Carinae
S. Hubrig, M. Briquet, T. Morel +3
We acquired high resolution spectroscopic and low resolution spectropolarimetric observations to achieve the following goals: a) to improve the orbital parameters to allow a more i…
The neon content of nearby B-type stars and its implications for the solar model problem
T. Morel, K. Butler
The recent downward revision of the solar photospheric abundances now leads to severe inconsistencies between the theoretical predictions for the internal structure of the Sun and…
Nitrogen enrichment, boron depletion and magnetic fields in slowly-rotating B-type dwarfs
T. Morel, S. Hubrig, M. Briquet
Evolutionary models for massive stars, accounting for rotational mixing effects, do not predict any core-processed material at the surface of B dwarfs with low rotational velocitie…
Close-up of primary and secondary asteroseismic CoRoT targets and the ground-based follow-up observations
K. Uytterhoeven, E. Poretti, M. Rainer +13
To optimise the science results of the asteroseismic part of the CoRoT satellite mission a complementary simultaneous ground-based observational campaign is organised for selected…
Towards an understanding of the Of?p star HD 191612: optical spectroscopy
Ian D. Howarth, Nolan R. Walborn, Danny J. Lennon +17
We present extensive optical spectroscopy of the early-type magnetic star HD 191612 (O6.5f?pe-O8fp). The Balmer and HeI lines show strongly variable emission which is highly reprod…