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abund

Set the Solar abundance table used in the plasma emission and photoelectric absorption models.

XSPEC> abund <option>

where <option> is either angr, from Anders E. & Grevesse N. (1989, Geochimica et Cosmochimica Acta 53, 197), feld, from Feldman U. (1992, Physica Scripta 46, 202), aneb, from Anders E. & Ebihara (1982, Geochimica et Cosmochimica Acta 46, 2363), or file filename, where filename is an ASCII file containing 18 lines with one number on each line. All abundances are number relative to H.. The tables are :

       Element          angr           feld           aneb
          H            1.00e+0        1.00e+0        1.00e+0
          He           9.77e-2        9.77e-2        8.01e-2
          C            3.63e-4        3.98e-4        4.45e-4
          N            1.12e-4        1.00e-4        9.12e-5
          O            8.51e-4        8.51e-4        7.39e-4
          Ne           1.23e-4        1.29e-4        1.38e-4
          Na           2.14e-6        2.14e-6        2.10e-6
          Mg           3.80e-5        3.80e-5        3.95e-5
          Al           2.95e-6        2.95e-6        3.12e-6
          Si           3.55e-5        3.55e-5        3.68e-5
          S            1.62e-5        1.62e-5        1.89e-5
          Cl           1.88e-7        1.88e-7        1.93e-7
          Ar           3.63e-6        4.47e-6        3.82e-6
          Ca           2.29e-6        2.29e-6        2.25e-6
          Cr           4.84e-7        4.84e-7        4.93e-7
          Fe           4.68e-5        3.24e-5        3.31e-5
          Co           8.60e-8        8.60e-8        1.81e-6
          Ni           1.78e-6        1.78e-6        8.27e-5



Keith Arnaud (kaa@genji.gsfc.nasa.gov)
Wed May 28 10:59:33 EDT 1997