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Attacking the X-ray emission properties of young stars with the Sword of Orion
K. R. Briggs, M. Guedel, M. Audard +1
We present a survey of X-ray emission from young stars in the Sword of Orion star-formation region using XMM-Newton's EPIC detectors. We find over 850 X-ray sources, of which more…
A Multiwavelength Study of RZ Cassiopeiae: The XMM-Newton/VLA Campaign
Marc Audard, Julius R. Donisan, Manuel Guedel
XMM-Newton and the VLA simultaneously observed the eclipsing Algol-type binary RZ Cassiopeiae in August 2003. The secondary eclipse (K3 IV companion behind the A3 V primary) was pl…
Flare and quiescent X-ray emission from Sigma Geminorum
R. Nordon, E. Behar, M. Guedel
The X-ray active RS CVn binary system Sigma Geminorum was observed during a long-duration flare with XMM-Newton. We compare line emission during the flare with line emission measur…
High-Energy Processes in Young Stars: Chandra X-ray Spectroscopy of HDE 283572, RY Tau, and LkCa 21
Marc Audard, Stephen L. Skinner, Kester W. Smith +2
Weak-lined T Tauri stars (WTTS) represent the important stage of stellar evolution between the accretion phase and the zero-age main sequence. At this stage, the star decouples fro…
Some Like it Hot: The X-Ray Emission of The Giant Star YY Mensae
Marc Audard, Alessandra Telleschi, Manuel Guedel +3
(Abridged abstract) We present an analysis of the X-ray emission of the rapidly rotating giant star YY Mensae observed by Chandra HETGS and XMM-Newton. Although no obvious flare wa…
Resolving X-ray sources from B-stars spectroscopically: The example of mu Lep
Ehud Behar, Maurice Leutenegger, Rami Doron +4
We present high-resolution X-ray observations of the chemically peculiar late-type B-star: mu Lep. However, we find spectroscopic and astrometric evidence, which show that the X-ra…