II/37 UBV HR Diagrams of Globular Clusters (Philip+ 1976)
Catalogue of UBV HR Diagrams of Globular Clusters
Philip A.G.D., Cullen M.F., White R.E.
<Dudley Obs. Report No. 11 (1976)>
ADC_Keywords: Clusters, globular ; HR diagrams ; Photometry, UBV
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
(1975AJ.....80...17B 1975AJ.....80...17B). 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
(1959MNRAS.119..538K 1959MNRAS.119..538K). 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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
clusters.dat 80 114 The list of Clusters
measures.dat 60 33807 The data
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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 Vmag 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_Nobs *[NT]Remark on Number of Observations?
36-37 I2 --- Nobs ?Number of Observations
39 I1 --- ObsType *Observation type
41-43 I3 --- clID Number of the cluster
45-46 I2 a yr ?Year of publication (from 1900)
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
labelled W Cen and some other sets use the cluster name rather than
the NGC number. Pal 4 is labelled 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:
-----------------------------------------------------------------------------
Original Transformation
Cluster System Equation Used Reference
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NGC 5466 P-V B-V=0.92*(P-V) +0.16 (1961AJ.....66...71C 1961AJ.....66...71C)
NGC 6205 C.I. B-V=0.84* C.I, +0.23 (1962ApJ...135..311A 1962ApJ...135..311A)
NGC 6254 C. I B-V=0.84* C.I. +0 23 (1962ApJ...135...11S 1962ApJ...135...11S)
NGC 6656 C.I. B-V=0.84* C.I. +0.23 (1959AJ.....64...28A 1959AJ.....64...28A)
NGC 6779 Mpg-V B-V=0.85*(Mpg-V)+0.25 (1965CoAsi.175...63B 1965CoAsi.175...63B)
NGC 7078 C.I. B-V=0.84* C.I. +0.23 (1962ApJ...135..311A 1962ApJ...135..311A)
NGC 7089 C.I. B-V=0.84* C.I. +0.23 (1962ApJ...135..311A 1962ApJ...135..311A)
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Note on n_Nobs:
The meaning of this remark is unclear.
Note on ObsType:
0 = unknown
1 = photoelectric
2 = photographic
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Byte-by-byte Description of file: clusters.dat
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Bytes Format Units Label Explanations
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1-8 A8 --- name Cluster name
10-15 A6 --- Aname Alternate name
16-18 I3 --- clID *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 --- --- [)] Parentheses
27-31 F5.2 --- Fe/H ?Abundance index [Fe/H] from Kukarkin (1974)
33-38 A6 --- Sp Spectral Type from Kinman (1959MNRAS.119..538K 1959MNRAS.119..538K)
40-58 A19 --- BibCode Reference as a bibcode
60-80 A21 --- RefText Reference as a text
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Note on clID:
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 (1975AJ.....80...17B 1975AJ.....80...17B) and the value used was
taken from Kukarkin (1974).
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History:
* March 1977: Catalog received at ADC (from A.G. Davis Phillip to
Wayne Warren Jr)
* July 1977: Catalog at CDS (1977BICDS..13...77. 1977BICDS..13...77.)
* 18-Dec-1995: Documentation by Nancy G. Roman and J.A. Watko (ADC)
* 03-Oct-2006: Addition of bibcodes in clusters.dat, in place of the
file "refs.dat"; added the data for IC4499 which was
missing (Francois Ochsenbein, CDS)
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. 1975AJ.....80...17
Harris W.E. 1975, personal communication.
Hartwick F.D.A. 1968ApJ...154..475H 1968ApJ...154..475H
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. 1975AJ.....80..427P 1975AJ.....80..427P
Racine R. 1975, personal communication.
White R.E. 1970ApJS...19..343W 1970ApJS...19..343W
Young P.S. 1970PASP...82..619Y 1970PASP...82..619Y
(End) Nancy G. Roman, Julie A. Watko [ADC] Francois Ochsenbein [CDS] 03-Oct-2006