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: http://xmm.vilspa.esa.es/sas/6.1.0/doc/omsrclistcomb/node6.html
Дата изменения: Mon Nov 22 23:55:49 2004 Дата индексирования: Sat Dec 22 13:36:53 2007 Кодировка: Поисковые слова: arp 220 |
There then follows columns for the computed significance (signal-to-noise) of each source for each of the filters present.
Columns for the instrumental magnitudes and colours for each filter, follow. Because of space constaints for the labels, for the colours the filters names have been abbreviated using the codes given in the XMM handbook (ie V=V, U=U, B=B, White=W, UVW1=L, UVM2=M and UVW2=S).
Columns for the standard magnitudes and errors, for each filter, follow. Since the standard colour may be calculated from more than one instrumental colour, all the standard magnitudes that have been computed are given in seperate columns, and the colour that was used in the calculation is given at the end of the label string. Standard colours and errors then follow.
There then follows columns for the parameterisation of the shapes of the sources (ie the semi-major and minor axes and the position-angle of the major axis), for eash filter.
Finally, for each filter there are columns for the quality (indicating whether (1) or not (0) the source contains any bad pixels, confusion (indicating if the source is isolated (1), near to an an edge (4), near to one or more other sources but aperture photometry was possible (2), or source/sources too close to enable aperture photometry to be undertaken (3)) and extension (indicating if that source is consistent (0) or not (1) with it being a point-source). For more information about these flags, please refer to the documentation for omdetect.