2 papers
astro-ph2004
XMM-Newton observation of the young open cluster Blanco 1. I. X-ray spectroscopy and photometry
I. Pillitteri, G. Micela, S. Sciortino +2
We present an X-ray study of the high metallicity young open cluster Blanco 1 based on XMM--Newton data. X-ray spectroscopy of cluster members is presented for the first time as we…
astro-ph2004
High-amplitude, long-term X-ray variability in the solar-type star HD 81809: the beginning of an X-ray activity cycle?
F. Favata, G. Micela, S. L. Baliunas
We present the initial results from our XMM program aimed at searching for X-ray activity cycles in solar-type stars. HD 81809 is a G2-type star (somewhat more evolved than the Sun…