Astronomical Data Center
ADC/CDS Standard Document for Catalog:
/catalogs/7/7031B/
The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:
VII/31B Star Clusters/Associations. I. Associations (Ruprecht+ 1982)
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Catalogue of Star Clusters and Associations, Supplement 1, Associations
Ruprecht J., Balazs B., White R.E.
<Akademiai Kiado, Publ. House Hungarian Acad. Sciences, Budapest (1981)>
=1981csca.book.....R
<Bull. Inform. CDS 22, 132 (1982)>
=1982BICDS..22..132R
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ADC_Keywords: Bibliography ; Associations, stellar
Description:
The catalog contains data and bibliographical citations for all 70
associations of the second edition of the "Catalogue of Star Clusters and
Associations (CSCA)" edited by Alter et al. (1970) which includes data
for open clusters, associations, globular clusters and extragalactic
objects up to 1967 and "Supplement to the CSCA" by Ruprecht et al. (1982),
which contains the supplementary data up to the end of 1973. Thus, the
literature is covered through 1973. The catalog includes the years of the
literature, references, authors, abbreviated journal references, diameters,
distances and color indices of the associations, number of stars and
spectral types of the stars in the associations, and identification of the
Palomar Observatory Sky Survey Chart on which the association appears.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
assoc.dat 87 89 List of associations and their positions
names.dat 124 86 Designations of each association
refs.dat 139 3308 Bibliography with parameters by reference
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See also:
VII/5 : Excerpt of the Catalogue (catalogue)
VII/44 : Part II (Globular clusters, catalogue)
VII/101 : Part III (Open Clusters, catalogue)
Byte-by-byte Description of file: assoc.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Assoc Association number starting with ASS
10- 15 A6 --- Page ?Card (or page) number of the second edition
(missing for ASS-3)
17- 24 A8 --- Name Other name of the association
26- 31 F6.2 deg GLON [0/360[?+= Galactic longitude (1)
33- 38 F6.2 deg GLAT [-90/90]? Galactic latitude (1)
42- 43 I2 h RAh [0/24[? Right Ascension 1950 (hours) (1)
45- 48 F4.1 min RAm [0/60[? Right Ascension 1950 (minutes) (1)
50 A1 --- DE- Declination 1950 (sign) (1)
51- 52 I2 deg DEd [0/90[? Declination 1950 (degrees) (1)
54- 55 I2 arcmin DEm [0/60[? Declination 1950 (minutes) (1)
59- 76 A18 --- POSS Palomar Sky Survey chart with its RA and Dec
80- 82 I3 mm X ? Position on the chart
from lower left corner
84- 86 I3 mm Y ? Position on the chart
from lower left corner
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Note (1): the position was added at CDS for additional associations, i.e.
ASS names with decimal figures. These positions have generally
less accuracy.
Note also that the last association ASS-70 has no position:
it lays over tens of degrees.
Byte-by-byte Description of file: names.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Num Association number
3- 4 F2.1 --- m_Num ?Association number suffix (e.g. .1 for 50.1)
11-114 A104 --- Desig List of association designations used by
various authors
117-124 A8 --- Page ?Card (or page) number of the second edition
(missing for ASS-3)
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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- 2 I2 --- Num Association number
3- 4 F2.1 --- m_Num ?Association number suffix (e.g. .1 for 50.1)
6- 9 I4 yr Year Year of the literature reference
12- 25 A14 --- Author Author Name
27- 42 A16 --- ref *Literature reference
43- 50 A8 arcmin AD ?Apparent diameter of the association
52-141 A90 --- Misc *Aggregated data and notes
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Note on ref:
(1) = DIE ENTSTEHUNG VON STERNEN,SPRINGER,BERLIN
(2) = ATLAS OF COL-MG DIAGR.,SUPPLEMENT,MOSCOW
(3) = PR.UN.PB.S2,N37-40,32
(4) = PR.UN.PB,S2,N37-40,34
(5) = CAN.J.R.A.S,46,222
(6) = WIEN.AN,29,N3 (PUP I,II)
Note on Misc:
The aggregated data and notes combined into the the Misc column do not
follow a strict column structure. For many records, the notes start
at the beginning of this field (byte 52). Other records contain some
or all of the following subfields loosly adhering to the byte ranges
shown:
52- 55 DIST: Distance of the association (pc)
57- 60 LD: Linear diameter of the association (pc)
65- 67 N: Number of stars in the association
69- 74 MG: Type of photometric magnitudes
76- 81 CI: Color index of the association
83- 87 SP: Spectra
88- 92 P: Positions
94-141 NOTE: Notes
Remarks and Modifications:
The original catalog contained multiple record formats in one file.
The file "names.dat" has been created from the first record per
association. The file "assoc.dat" has been created from second records;
missing positions were filled with approximative values found in the
literature. The file "refs.dat" was created from the third and following
records for each association.
References:
Alter G., Balazs B., and Ruprecht J., 1970, Catalogue of Stellar
Clusters and Associations, 2nd edition, Akademiai Kiada, Budapest,
printed in Hungary
Ruprecht J., Balazs B. and White R.E., 1982, Catalog of Star Clusters
and Associations, Supplement 1, Vols. I-III, Bull. Inform. CDS, no. 22,
p. 132
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(End) James E. Gass [SSDOO/ADC] 13-Feb-1998
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