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CORONAL EVOLUTION OF THE SUN IN TIME: HIGH-RESOLUTION X-RAY SPECTROSCOPY OF SOLAR ANALOGS WITH DIFFERENT AGES
 

Summary: CORONAL EVOLUTION OF THE SUN IN TIME: HIGH-RESOLUTION X-RAY
SPECTROSCOPY OF SOLAR ANALOGS WITH DIFFERENT AGES
Alessandra Telleschi, Manuel Gu¨del, and Kevin Briggs
Paul Scherrer Institut, Wu¨renlingen and Villigen, CH-5232 Villigen PSI, Switzerland;
atellesc@astro.phys.ethz.ch, guedel@astro.phys.ethz.ch, briggs@astro.phys.ethz.ch
Marc Audard
Columbia Astrophysics Laboratory, Mail Code 5247, 550 West 120th Street,
New York, NY 10027; audard@astro.columbia.edu
Jan-Uwe Ness
Department of Physics (Theoretical Physics), University of Oxford, 1 Keble Road,
Oxford OX1 3NP, England, UK; ness@thphys.ox.ac.uk
and
Stephen L. Skinner
Center for Astrophysics and Space Astronomy, University of Colorado, Boulder,
CO 80309-0389; skinners@casa.colorado.edu
Received 2004 August 7; accepted 2004 December 15
ABSTRACT
We investigate the long-term evolution of X-ray coronae of solar analogs based on high-resolution X-ray
spectroscopy and photometry with XMM-Newton. Six nearby main-sequence G stars with ages between %0.1 and
%1.6 Gyr and rotation periods between %1 and 12.4 days have been observed. We use the X-ray spectra to derive

  

Source: Audard, Marc - INTEGRAL Science Data Centre & Observatory of Geneva, Université de Genève

 

Collections: Physics