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1   /*
2    * $Id GunnGrizMagnitude.java $
3    *
4    */
5   
6   package org.astrogrid.intensity;
7   
8   
9   /***
10   * (taken from http://www.astro.utoronto.ca/~patton/astro/mags.html)
11   *<p>
12   This was originally defined in terms of photoelectric detectors (Thuan & Gunn 1976; Wade et al. 1979), but is now used primarily with CCDs (Schneider, Gunn, & Hoessel 1983; Schild 1984). The griz system is defined by a few dozen standard stars, and the star BD+17deg4708, a subdwarf F6 star with B-V=0.43, is defined to have colors equal to zero. The absolute calibration of this system is simply the monochromatic flux of the star (Oke & Gunn 1983), scaled from g=9.50 to g=0.0, at the effective wavelengths of the griz bands. A number of detailed aspects of broad-band photometry in the specific context of measurements of galaxies at large redshifts are reviewed in Schneider, Gunn, & Hoessel (1983).
13  
14  References:
15  Oke, J. B., & Gunn, J. E. 1983, ApJ, 266, 713
16  Schild, R. 1984, ApJ, 286, 450
17  Schneider, D. P., Gunn, J. E., & Hoessel J. G. 1983, ApJ, 264, 337
18  Thuan, T. X., & Gunn, J. E. 1976, PASP, 88, 543
19  Wade, R. A., Hoessel, J. G., Elias, J. H., Huchra, J. P. 1979, PASP, 91, 35
20   * @author M Hill
21   */
22  
23  public class GunnGrizMagnitude extends Magnitude
24  {
25     public GunnGrizMagnitude(double magnitude, double error, boolean apparent)
26     {
27        super(magnitude, error, apparent);
28     }
29     
30     /***
31      * Defaults to apparent magnitude
32      */
33     public GunnGrizMagnitude(double magnitude, double error)
34     {
35        super(magnitude, error, true);
36     }
37     
38     public Flux toFlux()
39     {
40        throw new UnsupportedOperationException("Not yet implemented");
41     }
42  }
43  
44  /*
45  $Log: GunnGrizMagnitude.java,v $
46  Revision 1.1.1.1  2003/08/25 18:36:27  mch
47  Reimported to fit It02 source structure
48  
49  Revision 1.1  2003/06/26 19:17:26  mch
50  new classes for handling passbands, etc
51  
52  */