Title: On the Use of Photometry in Spectral Classification
Abstract: We discuss the applicability of photoelectric photometry to the classification of stellar spectra. A distinction is made between “photometric” classifications, which depend upon correlations between photometric colors and spectral type, and true “spectral” classifications, which can be obtained photometrically if based upon reddening-free indices of the strengths of appropriate spectral features. Examples are given of the use of wide-band and intermediate-band photometry to measure intrinsic spectral characteristics of stars. One narrow-band photometric system – the writer’s eight-color system of TiO/CN classification photometry – is discussed in detail because it does provide true spectral classifications for stars of type M. Results from the eight-color system are compared to MK classifications as regards sensitivity, accuracy, and range of applicability.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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