131 citations · 605 across the 16 of their papers we have counts for
5 papers · 1 filter
On the nature of the WO3 star DR1 in IC 1613
F. Tramper, G. Gräfener, O. E. Hartoog +8
We present the results of a quantitative spectroscopic analysis of the oxygen-sequence Wolf- Rayet star DR1 in the low-metallicity galaxy IC 1613. Our models suggest that the stron…
On the nature of WO stars: a quantitative analysis of the WO3 star DR1 in IC 1613
F. Tramper, G. Gräfener, O. E. Hartoog +8
Context. Oxygen sequence Wolf-Rayet (WO) stars are thought to represent the final evolutionary stage of the most massive stars. The characteristic strong O vi emission possibly ori…
RCW36: characterizing the outcome of massive star formation
L. E. Ellerbroek, A. Bik, L. Kaper +6
Massive stars play a dominant role in the process of clustered star formation, with their feedback into the molecular cloud through ionizing radiation, stellar winds and outflows.…
AA Tau's sudden and long-lasting deepening: enhanced extinction by its circumstellar disk
Jerome Bouvier, Konstantin Grankin, Lucas Ellerbroek +2
AA Tau has been monitored for more than 20 years since 1987, exhibiting a nearly constant brightness level of V=12.5 mag. We report here that in 2011 it suddenly faded away, becomi…
R144 revealed as a double-lined spectroscopic binary
H. Sana, T. van Boeckel, F. Tramper +7
R144 is a WN6h star in the 30 Doradus region. It is suspected to be a binary because of its high luminosity and its strong X-ray flux, but no periodicity could be established so fa…