6 papers
Coronae of Cool Stars
M. Audard, S. A. Drake, M. Güdel +6
We present preliminary results of grating observations of YY Mensae and V824 Arae by Chandra and XMM-Newton. Spectral features are presented in the context of the emission measure…
Evolution of lithium in solar-type stars: clues from intermediate age clusters
S. Randich, L. Pasquini, R. Pallavicini
We present Li abundances for 14 solar-type stars in the intermediate age (~ 2 Gyr) clusters IC 4651 and NGC 3680. The log n(Li) vs. effective temperature distributions are compared…
The active binary star IIPeg with BeppoSAX
S. Covino, G. Tagliaferri, R. Pallavicini +2
IIPeg is an ideal target to study stellar activity and flares, since intense and long lasting flares have been frequently detected from this system at all wavelengths. We report he…
A BeppoSAX Observation of HD9770: a Visual Triple System Containing a Recently Discovered Short-Period Eclipsing Binary
G. Tagliaferri, S. Covino, G. Cutispoto +1
We have studied the coronal X-ray emission of the recently discovered short-period eclipsing binary HD 9770 with the BeppoSAX satellite. The data from the Low Energy and Medium Ene…
A SAX/LECS X-ray observation of the active binary Capella
F. Favata, R. Mewe, N. S. Brickhouse +3
We present a SAX/LECS X-ray observation of the active binary Capella, the first coronal source observed in the SAX Guest Investigator program. The analysis of this observation, per…
Coronal X-Ray Emission of HD35850: the ASCA view
G. Tagliaferri, S. Covino, T. A. Fleming +4
We present the analysis of the X-ray data of the young active star HD35850 obtained with ASCA and ROSAT. Our main goal was to see if there is a difference in the elemental abundanc…