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II/37 UBV HR Diagrams of Globular Clusters (Philip+ 1976)
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Catalogue of UBV HR Diagrams of Globular Clusters
Philip A.G.D., Cullen M.F., White R.E.
<Dudley Obs. Report No. 11 (1976)>
=1976ucmd.proc.....P
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ADC_Keywords: Clusters, globular ; HR diagrams
Description:
UBV observations of over 37,000 stars have been compiled from the
literature to yield 165 color-magnitude diagrams. There is a list of
bibliographic references for each cluster diagram.
Introduction:
This catalog contains 165 sets of data collected from the literature as
of 1976. For many clusters, more than one data set is included. Most of
the data is in the form of V and B-V; for some sets, U-B is also given.
A few sets are in other systems but have been transformed to UBV. The
original publication contains plots of the data so that the color
magnitude diagrams can be easily compared. Only the data are given in
this version.
Stars marked as non-members by the original authors including standard
stars, were not included. Also excluded were data which the original
authors collected from earlier references. The reference publication
also contains extensive tables of data on each cluster. This information
can be obtained from other sources, such as the Third Revised Galaxy
Catalog.
The color excess, E(B-V) is from Burstein and McDonald (1975). If the
value is enclosed in parentheses there was no value for E(B-V) in
Burstein and McDonald and the value used was taken from Kukarkin (1975).
The metal abundance [Fe/H] are from Kukarkin (1974). The spectral type
is from Kinman (1959). If the spectral type is enclosed in parentheses
the spectral type is taken from Kukarkin (1974). In the reference to the
original table of data the first two numbers indicate the date, the rest
of the reference follows.
In a few cases the catalogue diagram did not check out with the
published data. Every star listed in the published catalogue was plotted
unless it was individually marked as a non member. A Xerox copy of the
original C-M diagram was reproduced in the publication when the source of the
difference between the original and the diagram in the catalogue could
not be located.
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
measures.dat 60 33808 The data
datasets.dat 81 196 Detailed references to the published data
headers.dat 59 113 The headers
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Byte-by-byte Description of file: measures.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- ID *Identification
15- 19 F5.2 mag V V Magnitude
21- 26 F6.3 mag B-V *B-V Color Index
28- 33 F6.3 mag U-B U-B Color Index
35 A1 --- n_no1 *[NT]Remark on Number of Observations?
36- 37 I2 --- no1 ?Number of Observations
39 I1 --- no2 *Observation type
41- 43 I3 --- code Code
45- 46 I2 a yr ?Year of publication
47- 60 A14 --- ref Reference Journal Volume Page
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Note on ID:
The ID is normally the NGC number. One data set for omega Centauri is
labeled W Cen and some other sets use the cluster name rather than the
NGC number. Pal 4 is labeled as such.
Note on B-V:
Seven of the datasets were not originally on the UBV system. The catalog
data have been transformed to UBV values. The transformation equations
used to transfer these to the UBV system and the references to these
equations are as follows:
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Original Transformation
Cluster System Equation Used Reference
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NGC 5466 P-V B-V=0.92*(P-V) +0.16 (1961, A.J., 66, 71)
NGC 6205 C.I. B-V=0.84* C.I, +0.23 (1962, Ap.J., 135, 311)
NGC 6254 C. I B-V=0.84* C.I. +0 23 (1962, Ap. J ., 135, 11)
NGC 6656 C.I. B-V=0.84* C.I. +0.23 (1959, A.J., 64, 28)
NGC 6779 Mpg-V B-V=0.85*(Mpg-V)+0.25 (1965, Asiago Contr, 175,63)
NGC 7078 C.I. B-V=0.84* C.I. +0.23 (1962, Ap.J., 135, 311)
NGC 7089 C.I. B-V=0.84* C.I. +0.23 (1962, Ap.J., 135, 311)
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Note on n_no1:
The meaning of this remark is unclear.
Note on no2:
0 unknown
1 photoelectric
2 photographic
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Byte-by-byte Description of file: datasets.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- name *Name
8- 15 A8 --- alt_name Alternate Name
19- 81 A63 --- ref Reference
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Note on name:
Usually NGC number. If blank, then references are continued on next line.
Byte-by-byte Description of file: headers.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- name Cluster name
10- 15 A6 --- alt_name Alternate name
16- 18 I3 --- set_no *Data set number
20 A1 --- n_E(B-V) *[(E] Remark on E(B-V)
21- 24 F4.2 mag E(B-V) Color excess in B-V
25 A1 --- paren [)] Parentheses
27- 31 F5.2 --- Fe/H Abundance index [Fe/H]
33- 38 A6 --- Sp Spectral Type
39- 40 I2 a yr Year of ref
41 A1 --- com [,] Comma
42- 59 A18 --- ref Reference
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Note on set_no:
The data sets are numbered in the order they occur in measures.dat.
Note on n_E(B-V):
If the value is enclosed in parentheses there was no value for E(B-V)
in Burstein and McDonald (1975) and the value used was taken from
Kukarkin (1974).
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References:
Alcaino G. 1973, Atlas of Galactic Globular Clusters with Color-Magnitude
Diagrams, Edicones Nueva Universidad, Universidad Catolica de Chile.
Burstein D., and McDonald L.H. 1975, A.J., 80, 17.
Harris W.E. 1975, personal communication.
Hartwick F.D.A. 1968, Ap.J., 154, 475.
Hartwick F.D.A., and Hesser J.E. 1976, personal communication.
Kinman T.D. 1959, MNRAS, 119, 5.
Kogan C.S., Wehlau A. and Demers S. 1974, personal communication.
Kukarkin B.V. 1974, The Globular Star Clusters (NAUKA, Moscow).
Peterson C.J., and King I.R. 1975, A.J., 80, 427.
Racine R. 1975, personal communication.
White R.E. 1970, Ap.J. Suppl., 19, 343.
Young P.S. 1970, P.A.S.P., 82, 619.
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(End) Nancy G. Roman [SSDOO/ADC] Nov-17-1995 J.A. Watko [SSDOO/ADC] 18-DEC-1995