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Theoretical isochrones in the Sloan Digital Sky Survey ugriz ABmag system

The present directory (isoc_sloan) contain the data files for the Sloan Digital Sky Survey ugriz ABmag system. Before downloading, please give a look at:

  • The Paper preprint that describes the bolometric corrections: Theoretical isochrones in several photometric systems II. The Sloan Digital Sky Survey ugriz system, by L. Girardi, E.K. Grebel, M. Odenkirchen, C. Chiosi, 2004, Astronomy & Astrophysics, in press.
  • The Reference table with a summary description of the stellar evolutionary models in use, and their basic references. This allows you to know the differences between the several isochrone files (and better than the minimal table you see below).
  • The readme.txt file (ascii file, 13 Kby), with a field-by-field description of all files in the database.
  • Here you can download the (gzipped) data files:
    Tables of bolometric corrections: [M/H]
    isoc_sloan/bctab_m25.dat.gz -2.5
    isoc_sloan/bctab_m20.dat.gz -2.0
    isoc_sloan/bctab_m15.dat.gz -1.5
    isoc_sloan/bctab_m10.dat.gz -1.0
    isoc_sloan/bctab_m05.dat.gz -0.5
    isoc_sloan/bctab_p00.dat.gz 0.0
    isoc_sloan/bctab_p05.dat.gz +0.5

    Isochrone file: corresponding SSP magnitude file: Z a very minimal description:1
    isoc_sloan/isoc_z0.dat.gz isoc_sloan/sspmag_z0.dat.gz 0 Metal-free models from Ma01.
    isoc_sloan/isoc_z0001.dat.gz isoc_sloan/sspmag_z0001.dat.gz 0.0001 Basic set obtained by combining Gi00+Gi01 (low- and intermediate-mass stars) with Be94+Gi96 (high masses) isochrones. With overshooting. Include a simplified TP-AGB evolution.
    isoc_sloan/isoc_z0004.dat.gz isoc_sloan/sspmag_z0004.dat.gz 0.0004
    isoc_sloan/isoc_z001.dat.gz isoc_sloan/sspmag_z001.dat.gz 0.001
    isoc_sloan/isoc_z004.dat.gz isoc_sloan/sspmag_z004.dat.gz 0.004
    isoc_sloan/isoc_z008.dat.gz isoc_sloan/sspmag_z008.dat.gz 0.008
    isoc_sloan/isoc_z019.dat.gz isoc_sloan/sspmag_z019.dat.gz 0.019
    isoc_sloan/isoc_z030.dat.gz isoc_sloan/sspmag_z030.dat.gz 0.030
    isoc_sloan/isoc_z019nov.dat.gz isoc_sloan/sspmag_z019nov.dat.gz 0.019 Alternative to the basic set, but without overshooting (Gi00).
    isoc_sloan/isoc_z008s.dat.gz isoc_sloan/sspmag_z008s.dat.gz 0.008 Scaled-solar models from Sa00. Both with overshooting and a simplified TP-AGB evolution.
    isoc_sloan/isoc_z019s.dat.gz isoc_sloan/sspmag_z019s.dat.gz 0.019
    isoc_sloan/isoc_z040s.dat.gz isoc_sloan/sspmag_z040s.dat.gz 0.040
    isoc_sloan/isoc_z070s.dat.gz isoc_sloan/sspmag_z070s.dat.gz 0.070
    isoc_sloan/isoc_z008a.dat.gz isoc_sloan/sspmag_z008a.dat.gz 0.008 Alpha-enhanced models from Sa00.
    isoc_sloan/isoc_z019a.dat.gz isoc_sloan/sspmag_z019a.dat.gz 0.019
    isoc_sloan/isoc_z040a.dat.gz isoc_sloan/sspmag_z040a.dat.gz 0.040
    isoc_sloan/isoc_z070a.dat.gz isoc_sloan/sspmag_z070a.dat.gz 0.070
    isoc_sloan/isoc_z004m.dat.gz isoc_sloan/sspmag_z004m.dat.gz 0.004 Alternative to the basic set with overshooting, but including a more detailed TP-AGB evolution (MG01).
    isoc_sloan/isoc_z008m.dat.gz isoc_sloan/sspmag_z008m.dat.gz 0.008
    isoc_sloan/isoc_z019m.dat.gz isoc_sloan/sspmag_z019m.dat.gz 0.019

    1 References: Be94= Bertelli et al. (1994, A&AS 106, 275); Br93= Bressan et al. (1993, A&AS 100, 647); Fa94a = Fagotto et al. (1994a, A&AS 104, 365); Fa94b = Fagotto et al. (1994b, A&AS 105, 29); Gi96 = Girardi et al. (1996, A&AS 117, 113); Gi00 = Girardi et al. (2000, A&AS 141, 371); Gi01 = Girardi (2001, unpublished); Ma01 = Marigo et al. (2001, A&A 371, 152); MG01 = Marigo & Girardi (2001, A&A 377, 132); Sa00 = Salasnich et al. (2000, A&A 361, 1023).