177 citations · 3.1k across the 81 of their papers we have counts for
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Jets, accretion, coronae and all that: The enigmatic X-rays from the Herbig star HD 163296
H. M. Guenther, J. H. M. M. Schmitt
Herbig Ae/Be stars (HAeBe) are pre-main sequence objects in the mass range between 2 and 8 solar masses. Their X-ray properties are uncertain and, as yet, unexplained. We want to e…
Further X-ray detections of Herbig stars
B. Stelzer, J. Robrade, J. H. M. M. Schmitt +1
The interpretation of X-ray detections from Herbig Ae/Be stars is disputed as it is not clear if these intermediate-mass pre-main sequence stars are able to drive a dynamo and ensu…
Discovery of X-ray emission from the eclipsing brown-dwarf binary 2MASS J05352184-0546085
S. Czesla, P. C. Schneider, J. H. M. M. Schmitt
The eclipsing brown-dwarf binary system 2MASS J05352184-0546085 is a case sui generis. For the first time, it allows a detailed analysis of the individual properties of young brown…
The nature of the soft X-ray source in DG Tau
P. C. Schneider, J. H. M. M. Schmitt
The classical T Tauri star DG Tau shows all typical signatures of X-ray activity and, in particular, harbors a resolved X-ray jet. We demonstrate that its soft and hard X-ray compo…
Multiwavelength observations of a giant flare on CN Leonis I. The chromosphere as seen in the optical spectra
B. Fuhrmeister, C. Liefke, J. H. M. M. Schmitt +1
Flares on dM stars contain plasmas at very different temperatures and thus affect a wide wavelength range in the electromagnetic spectrum. While the coronal properties of flares ar…
Where are the hot ion lines in classical T Tauri stars formed?
H. M. Günther, J. H. M. M. Schmitt
Classical T Tauri stars show a plethora of in- and outflow signatures in a variety of wavelengths bands. In order to constrain gas velocities and temperatures we analyse the emissi…