123 citations · 342 across the 17 of their papers we have counts for
17 papers
Massive Be and Oe stars at low metallicity and long gamma ray bursts
Christophe Martayan, Jean Zorec, Dietrich Baade +3
According to recent theoretical studies, the progenitors of Long Gamma Ray Bursts should be very fast rotating stars, massive enough but not so for collapsing into a black hole. In…
Evolution of massive Be and Oe stars at low metallicity towards the Long Gamma Ray bursts\footnote{Based on ESO runs 069.D-0275(A), 072.D-0245(A) and (C).}
Christophe Martayan, Jean Zorec, Dietrich Baade +3
Several studies have shown recently that at low metallicity B-type stars rotate faster than in environments of high metallicity. This is a typical case in the SMC. As a consequence…
X-shooter, NACO, and AMBER observations of the LBV Pistol Star \footnote{Based on ESO runs 85.D-0182A, 085.D-0625AC}
Christophe Martayan, Ronny Blomme, Jean-Baptiste Le Bouquin +15
We present multi-instruments and multi-wavelengths observations of the famous LBV star Pistol Star. These observations are part of a larger program about early O stars at different…
Massive Oe/Be stars at low metallicity: Candidate progenitors of long GRBs?
Christophe Martayan, Dietrich Baade, Jean Zorec +3
At low metallicity the B-type stars rotate faster than at higher metallicity, typically in the SMC. As a consequence, it was expected a larger number of fast rotators in the SMC th…
Review about populations of Be stars: stellar evolution of extreme stars
Christophe Martayan, Thomas Rivinius, Dietrich Baade +2
Among the emission-line stars, the classical Be stars known for their extreme properties are remarkable. The Be stars are B-type main sequence stars that have displayed at least on…
Can massive Be/Oe stars be progenitors of long gamma ray bursts?
Christophe Martayan, Jean Zorec, Yves Fremat +1
Context: The identification of long-gamma-ray-bursts (LGRBs) is still uncertain, although the collapsar engine of fast-rotating massive stars is gaining a strong consensus. Aims: W…