V/96 Catalogue of open cluster parameters from UBV-data. (Loktin+, 1994)
Catalogue of open cluster parameters from UBV-data.
Loktin A.V., Matkin N.V., Gerasimenko T.P.
<Astron. Astrophys. Trans. 4, 153 (1994)>
=1994A&AT....4..153L 1994A&AT....4..153L
ADC_Keywords: Clusters, open; Combined data
Description:
The authors constructed the homogeneous set of galactic open cluster
parameters (reddenings, distances, ages and partly metallicities)
using published UBV-photometry data (Loktin, Matkin, 1992). The
catalogue contains data on 340 clusters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 72 340 Weighted mean parameters of open clusters
table1.dat 83 566 Individual determinations of cluster parameters
refs.dat 87 321 References
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See also:
VII/92 : Open Cluster Data 5th Edition (Lynga 1987)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Cl Name of cluster
14- 18 F5.1 deg GLON Galactic longitude
20- 24 F5.1 deg GLAT Galactic latitude
27- 28 I2 h RAh Right Ascension 1950 (hours)
30- 33 F4.1 min RAm Right Ascension 1950 (minutes)
35 A1 --- DE- Declination (sign)
36- 37 I2 deg DEd Declination 1950 (degrees)
39- 40 I2 arcmin DEm Declination 1950 (minutes)
43- 46 F4.2 mag E(B-V) Mean value of reddening
49- 53 I5 pc Distm Mean estimate of cluster distance
57- 61 F5.3 [yr] log(age) Mean Log(age), years
65- 68 F4.2 --- W Weight (1)
72 I1 --- o_Cl Number of individual determinations
(in table1.dat)
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Note (1):
Weight is defined by quality classes of both photometrical diagrams,
number of stars used and number of rejected stars.
These weights are arbitrary to some extent, but we state, that
clusters with weight>1 may be regarded as having good quality of
estimated parameters.
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Cl Name of cluster
15- 21 F7.3 mag m-M Distance modulus
24- 28 I5 pc Dist Distance
33- 38 F6.3 [yr] log(age) Log(age), years
43- 47 F5.3 mag E(B-V) Reddening
51- 56 F6.3 [Sun] [Fe/H] ? Metallicity index
61- 62 A2 --- qHR Quality estimation of HR-diagram (1)
65- 66 A2 --- qCD Quality estimation of two-color diagram (1)
70- 72 I3 --- Ns Original number of stars in cluster
74- 76 I3 --- Na Accepted number of stars in cluster
81- 83 I3 --- r_Cl [1,321] Reference number code (see refs.dat)
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Note (1): the Quality codes are A to D where
A - corresponds to the diagrams with the most clearly visible sequences,
D - corresponds to quite unshaped distribution of points.
Digit 5 after the letter denotes the intermediate cases.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- RefC [1,321]+ Reference number code
6- 87 A82 --- Text Text of reference
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References:
Janes K., Adler D., 1982ApJS...49..425J 1982ApJS...49..425J
Loktin A.V., Matkin N.V., 1994, Astron. Astrophys. Trans. 4, 153
Lynga G., 1987 Catalogue of open cluster data. CDS, Strasbourg.
(Cat. VII/92)
Mdzinarishvili T.G.M., 1992, Bull. Abast. Astrophys. Obs., 68, 157.
Buscombe, W.: 1977, MK Spectral Classifications; Third General Catalogue
Northwestern University, Evanston.
(End) Veta Avedisova [INASAN] 17-Oct-1997