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astro-ph2005★ 64 cited
XMM-Newton observations of the sigma Ori cluster. II. Spatial and spectral analysis of the full EPIC field
E. Franciosini, R. Pallavicini, J. Sanz-Forcada
We present the results of an XMM-Newton observation of the young (~2-4 Myr) cluster around the hot star sigma Orionis. In a previous paper we presented the analysis of the RGS spec…
astro-ph2005★ 6 cited
Spectral Indications of Density Variability in the Corona of AD Leonis
A. Maggio, J. -U. Ness
Direct comparison of high-resolution X-ray spectra of the active dMe star AD Leo, observed three times with Chandra, shows variability of key density-sensitive lines, possibly due…