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The Interpretation of Photoelectric Colors for Stars of Types B-F

Bonsack, W. K. and Greenstein, J. L. and Mathis, J. S. and Melbourne, W. G. and Neugebauer, G. and Newburn, R. L. and Olsen, K. H. and Tifft, W. G. and Wahlquist, H. D. and Wallerstein, G. (1957) The Interpretation of Photoelectric Colors for Stars of Types B-F. Astrophysical Journal, 125 (1). pp. 139-152. ISSN 0004-637X. doi:10.1086/146289.

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The accumulation of photoelectric data on the Johnson-Morgan system of B - V and U - B colors makes a preliminary theoretical reconnaissance desirable The colors were predicted for atmospheres of a wide range of effective temperatures and electron pressures. The effects of the Balmer jump on the response in the U band and of the Balmer lines in the B band were included, using averages taken over spectral type and luminosity classes. Table 2 gives the predicted fluxes as compared to a black body, the corrected B - V and U - B colors, and the color temperatures The zero point is based on Code's spectral scans of two stars. The results are most useful for differential effects over small ranges of 0 and P_e; the general temperature and pressure scale derived colorimetrically seems reasonable. The large effect of lines in certain white dwarfs explains some features of the observed colors.

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Wallerstein, G.0000-0003-3416-8728
Additional Information:© 1957 American Astronomical Society.
Issue or Number:1
Record Number:CaltechAUTHORS:20170228-094501216
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Official Citation:The Interpretation of Photoelectric Colors for Stars of Types B-F Authors: Bonsack, W. K.; Greenstein, J. L.; Mathis, J. S.; Melbourne, W. G.; Neugebauer, G.; Newburn, R. L.; Olsen, K. H.; Tifft, W. G.; Wahlquist, H. D.; Wallerstein, G. Astrophysical Journal, vol. 125, p.139 (ApJ Homepage) 01/1957
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ID Code:74587
Deposited On:28 Feb 2017 18:29
Last Modified:11 Nov 2021 05:28

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