Synphot Data User's Guide
A.1 Introduction to all available spectral catalogs
Both observed and synthetic spectra are available to synphot users. Table A.1 summarizes the contents, access mode, and status of the available catalogs.
The first three columns contain, respectively, the catalog reference, the type of objects, and whether the spectra are models or observed.
Column 4 provides the sample syntax for accessing these spectra: in some cases, a filename must be provided, and in others, use of the synphot function cat or icat can be used. These functions allow access by specifying model parameters (effective temperature, metallicity, log gravity); the difference between the cat() and icat() functions is that cat() selects the spectrum closest matching the specified parameters while icat() interpolates between models that bracket the specified parameters.
Column 5 indicates whether the catalog is recommended or deprecated, with an alternative recommended in the case of deprecated catalogs. A blank entry in this column indicates that there may be more recent catalogs available in the literature which have not been incorporated into the synphot catalog set. Deprecated catalogs remain available to guarantee work continuity and to make comparison checks between older and newer spectra available.
Table A.1: Summary of all Spectra Available in Synphot and Related Information. See text for details.
Spectra Set Object Type Model or Observed Access Status HST Calibration Spectra Stars Observed crcalspec$zzzzzz_nnn.fits Recommended Castelli and Kurucz 2003, 2004 Stars Model icat(ck04models,t,m,g) Recommended Pickles 1998 Stars Observed crgrid$pickles/dat_uvi/pickles_nnnn.fits (or dat_uvk) Recommended Kinney and Calzetti Galaxies Observed crgridkc96$xxxx_template.fits AGN atlas AGNs Observed crgridagn$xxxx_template.fits Galactic Atlas Various Observed crgridgalactic$zzzz_template.fits Kurucz 1993 Stars Model icat(k93models, t,m,g) Deprecated/ Use Castelli and Kurucz instead Bruzual 1977 Stars Model crgridbz77$bz_nn.fits Deprecated/ Use Pickles 1998 instead Gunn and Stryker 1983 Stars Observed crgridgs$gs_nn.fits Deprecated/ Use Pickles 1998 instead Bruzual et al 1979-1983 Stars Observed crgridbz77$bz_nn.fits Deprecated/ Use Pickles 1998 instead Jacoby, Hunter and Christian 1984 Stars Observed crgridjac$jc_nn.fits Deprecated/ Use Pickles 1998 instead Buser and Kurucz 1979 Stars Model crgridbk$bk_?nnnn.fits , where ? is one of (a,b,c,d,m,s) Deprecated/ Use Pickles 1998 instead Bruzual and Charlot 1995 Galaxies Model crgridbc95$templates/bc95_x_XXXX.fits Deprecated/ Use GISSEL and Starburst99
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