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II/123A UBV Photometry of Faint Stars (V>14.5) in M67 (Frolov+ 1986)
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Beginning of ReadMe :II/123A UBV Photometry of Faint Stars (V>14.5) in M67 (Frolov+ 1986)
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UBV Photometry of Faint Stars (V>14.5) in the Open Cluster M67
Frolov V.N., Ananyevskaya J.K.
<Astron. Tsirk. No. 1432, (1986)>
=1986ATsir1432....5F
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ADC_Keywords: Stars, faint; Photometry, UBV ; Photometry, photographic ;
Clusters, open
Description:
This catalog is the result of a program of photographic photometry.
Four plates each were taken of M67 in U, B, and V, and were measured
and reduced using the standards of Johnson and Sandage (1955) and
Eggen and Sandage (1964). The catalog lists identification, V, B-V,
U-B, proper motion, and membership probability for 1,053 stars.
Introduction:
The UBV Photometry of Faint Stars (V>14.5) in the Open Cluster M67
(NGC 2682) (UBV-M67; Frolov and Ananyevskaya 1986) lists UBV
photometry of faint stars obtained as part of an investigation of M67.
It complements the work of Frolov (1984), which dealt with the
brighter stars (V '<' 14.5 mag.)
Because most of these objects had no previous photometry, Frolov and
Ananyevskaya have obtained UBV photometry for all catalog stars. Four
plates were taken in each color using the Schmidt telescope of the
Radio Astrophysical Observatory of the Latvian SSR, which were then
measured and calibrated using the standards of Johnson and Sandage
(1955) and Eggen and Sandage (1964). Frolov and Ananyevskaya (1986)
note the following:
As there was a lack of the faintest standards we had to add
photoelectric UBV magnitudes of five stars determined only by one
observation. The mean errors are 0.03, 0.04, and 0.03 mag. for U,
B, and V magnitudes, respectively.
See Frolov (1984) for further details of the data reduction. Of the
1,053 stars included in this catalog, 172 were determined to be
members of M67 on the basis of proper motion and photometry.
The catalog is in a single file which lists identification, V, B-V,
U-B, relative proper motion, and probability of membership for each
of the stars investigated.
Objects:
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RA (2000) DE Designation(s)
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08 50.4 +11 49 M 67 = NGC 2682
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