25 citations · 50 across the 4 of their papers we have counts for
4 papers
No FIP fractionation in the active stars AR Psc and AY Cet
J. Sanz-Forcada, L. Affer, G. Micela
Context: The comparison of coronal and photospheric abundances in cool stars is an essential question to resolve. In the Sun an enhancement of the elements with low first ionizatio…
Optical spectroscopy of X-ray sources in the Taurus molecular cloud: discovery of ten new pre-main sequence stars
L. Scelsi, G. Sacco, L. Affer +4
We have analyzed optical spectra of 25 X-ray sources identified as potential new members of the Taurus molecular cloud (TMC), in order to confirm their membership in this SFR. Fift…
The stellar population of the Rosat North Ecliptic Pole survey. II. Spectral analysis
L. Affer, G. Micela, T. Morel
X-ray surveys allow to identify young, main-sequence stars in the solar neighborhood. Young, stellar samples, selected according to their activity, can be used to determine the ste…
Geometry Diagnostics of a Stellar Flare from Fluorescent X-rays
P. Testa, J. J. Drake, B. Ercolano +5
We present evidence of Fe fluorescent emission in the Chandra HETGS spectrum of the single G-type giant HR 9024 during a large flare. In analogy to solar X-ray observations, we int…