3 papers
astro-ph2004
Transforming observational data and theoretical isochrones into the ACS/WFC Vega-mag system
Luigi R. Bedin, Santi Cassisi, Fiorella Castelli +6
We propose a zero-point photometric calibration of the data from the ACS/WFC on board the Hubble Space Telescope, based on a spectrum of Vega and the most up to date in-flight tran…
astro-ph1998
The High Energy Resolution View of Ionized Absorbers in AGN
F. Nicastro, F. Fiore, G. Matt
A number of emission and absorption features are expected to be visible in high energy resolution X-ray spectra of type 1 AGN with ionized gas along the line of sight (so called "w…
astro-ph1998
Signatures of Resonant Absoprtion in X-ray Spectra of Type 1 AGN
F. Nicastro, F. Fiore, G. Matt
We present photoionization models accounting for both photoelectric and resonant absorption. We demonstrate that resonance absorption lines are detectable even in moderate resoluti…