The Kunkel & Rydgren BVri system
Basic Reference
Kunkel W.E., Rydgren A.E. 1979, Astron. J. 84, 633
Abstract
Forty-eight of the Landolt [Astron. J. 78, 959 (1973)] faint equatorial
standard stars have been observed with both S-1 and RCA 31034A photmultipliers.
V-R and V-I colors are given for these stars on the Johnson system and
on a system natural to the RCA 31034A.
A number of M dwarfs have also been observed with the S-1 and/or the RCA 31034A
photomultipliers. Serious problems have been encountered in transforming the observed V-R and V-I colors of the M dwarfs to the johnson system.
Content
Access to the data and references
Asiago Database on Photometric System (ADPS)
Indices and Parameters
V, U-B, B-V, V-r, V-i
Filters
- B : Corning 5030 + 2 mm Schott BG18 + 2 mm Schott GG385
- V : Corning 3384 + Corning 9780
- r : 3 mm Schott KG1 + 2 mm OG5 + 1.5 mm RG6
- i : 3 mm Schott RG715 + 1 mm RG780
Photomultiplier
RCA 31034A
Transformations
To Johnson VRI colours:
- (V-R) = 1.303 (V-r) +0.064
- (V-I) = 1.331 (V-i) +0.004
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commentsto epaunzen@physics.muni.cz
epaunzen@physics.muni.cz
Last update: 13 September 2002