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The S sub 10 /V/ unit of surface brightnessSome discrepancies in the use of the unit of zodiacal light measurements - S sub 10 (V), which is the equivalent number of tenth magnitude stars of solar spectral type per square degree - are discussed. It is suggested that: (1) the S sub 10 (V) unit be understood to represent 10th magnitude solar (G2V) stars per square degree at mean solar distance, (2) the V refers to the visual color in the UBV system defined by Johnson and Morgan (1953), (3) the apparent solar visual magnitude be taken as -26.73 and the B-V index as .63, (4) the solar spectral irradiance values of Labs and Neckel (1970) be used, and (5) when using Vega as a standard to obtain brightnesses in S sub 10 (V), +.04 be used as its magnitude at all wavelengths and the irradiance values of Hayes and Latham (1975) be used.
Document ID
19760060741
Document Type
Conference Proceedings
Authors
Sparrow, J. G. (State Univ. of New York Albany, NY, United States)
Weinberg, J. L. (New York, State University Albany, N.Y., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Subject Category
GEOPHYSICS
Meeting Information
Interplanetary dust and zodiacal light(Heidelberg)
Funding Number(s)
CONTRACT_GRANT: NAS2-7963
CONTRACT_GRANT: NAS8-30251
Distribution Limits
Public
Copyright
Other