| Affiliation: |
| AA(INAF-Osservatorio Astronomico di Brera, Via Brera 28, 20212 Milano, Italy; ), AB(Dipartimento di Astronomia, Universita di Bologna, Via Ranzani 1, 40127 Bologna, Italy), AC(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138), AD(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138), AE(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138), AF(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138), AG(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138), AH(Department of Astronomy, University of Wisconsin, Madison, WI 53706-1582), AI(Laboratory for X-Ray Astrophysics, NASA Goddard Space Flight Center, Greenbelt, MD 20771), AJ(Sub-Department of Astrophysics, University of Oxford, Oxford OX1 3RH, UK), AK(Northwestern University, Department of Physics and Astronomy, Evanston, IL 60208), AL(Theoretical Astrophysics Group, University of Leicester, Leicester LE1 7RH, UK), AM(Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-2320) |