VII/4A Abell and Zwicky Clusters of Galaxies (Abell+ 1974) ================================================================================ Catalogue of Abell and Zwicky Clusters of Galaxies ABELL G.O. =1958ApJS....3..211A CORWIN H.G. =1974AJ.....79.1356C ZWICKY F., HERZOG E., WILD P., KARPOWICZ M., KOWAL C.T.: 1961-68 ================================================================================ ADC_Keywords: Clusters, galaxy ; Description: See the complete documentation written by Robert S. Hill (file adc.doc) File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file adc.doc 80 614 Documentation written by Robert S. Hill abell 130 2712 Abell Clusters (Abell, 1958; Corwin, 1974) zwicky 130 9134 Zwicky Clusters (Zwicky et al., 1961-68) zwindex 130 9134 Zwicky Clusters index -------------------------------------------------------------------------------- See also: VII/201 : Cross-Identifications in Abell / Zwicky clusters (Kalinkov+ 1998) Byte-by-byte Description of file: abell -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 2- 5 I4 --- Abell Abell cluster number 7 I1 --- n_Abell [1/2] '2' if in Abell's statistical sample, '1' if not 9- 10 I2 h RAh Hours RA, 1950.0 12- 15 F4.1 min RAm Minutes RA, 1950.0 17 A1 --- DE- Sign Dec, 1950.0 18- 19 I2 deg DEd Degrees Dec, 1950.0 21- 22 I2 arcmin DEm Minutes Dec, 1950.0 25- 28 F4.1 mag Mag10 Magnitude of 10th brightest cluster member 31 I1 --- DistGroup [0/7] Distance group (1) 34 I1 --- RichGroup [0/5] Richness group (2) 37- 42 F6.2 deg GLON Galactic longitude 44- 49 F6.2 deg GLAT Galactic latitude 52- 58 F7.4 --- RLamb Lambert distance from pole (3) 60- 66 F7.4 --- XLamb Lambert X coordinate (3) 68- 74 F7.4 --- YLamb Lambert Y coordinate (3) 77- 82 F6.2 deg SGLON Supergalactic longitude (de Vaucouleur's system) 84- 89 F6.2 deg SGLAT Supergalactic latitude 92- 95 F4.2 deg ClusRad Corrected Abell cluster radius 98-103 F6.3 deg2 ClusArea Cluster area computed from ClusRad 106-109 I4 ct/deg2 Pop Mean apparent population (galaxies/sq.deg) 112-114 I3 Mpc Dist Radial distance to cluster 117-120 I4 Mpc DistX X component of Distance 122-125 I4 Mpc DistY Y component of Distance 127-130 I4 Mpc DistZ Z component of Distance -------------------------------------------------------------------------------- Note (1): DistGroup is Based on the magnitude of the 10th brightest member; it is defined as follows: '0'= < 13.3 '4'= 15.7 - 16.4 '1'= 13.3 - 14.0 '5'= 16.5 - 17.2 '2'= 14.1 - 14.8 '6'= 17.3 - 18.0 '3'= 14.9 - 15.6 '7'= > 18.0 Note (2): RichGroup depends on galaxy counts as follows: '0'= 30 - 40 '3'= 130 - 199 '1'= 50 - 79 '4'= 200 - 299 '2'= 80 - 129 '5'= 300 or over. Note (3): The Lambert projection is an equal-area projection, where the distance to the center (nearest galactic pole) RLamb is defined by: RLamb = 2 sin (theta/2) where theta = polar distance = (90-b) and the position angle is the longitude. RLamb is negative for clusters located in southern galactic hemisphere. The cartesian values XLamb and YLamb are defined by: XLamb = RLamb sin(l) (component directed toward l=90deg) YLamb = RLamb cos(l) (component directed toward l=0deg) RLamb, XLamb and YLamb are therefore in range [-sqrt(2), +sqrt(2)] -------------------------------------------------------------------------------- Byte-by-byte Description of file: zwicky -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 2- 5 I4 --- Zwicky Zwicky cluster number 8- 9 I2 h RAh Hours RA, 1950.0 11- 14 F4.1 min RAm Minutes RA, 1950.0 17 A1 --- DE- Sign Dec, 1950.0 18- 19 I2 deg DEd Degrees Dec, 1950.0 21- 22 I2 arcmin DEm Minutes Dec, 1950.0 26 I1 --- Type [1/3] Cluster type (1) 30- 33 I4 --- GalCnt Population of cluster (number of galaxies) 37- 40 F4.1 cm Diam Diameter of cluster 44 I1 --- DistGroup Distance group (2) 48- 53 F6.2 deg GLON Galactic longitude 56- 61 F6.2 deg GLAT Galactic latitude 65- 71 F7.4 --- RLamb Lambert distance from pole (3) 74- 80 F7.4 --- XLamb Lambert X coordinate (3) 83- 89 F7.4 --- YLamb Lambert Y coordinate (3) 93- 98 F6.2 deg SGLON Supergalactic longitude, de Vaucouleur's system 101-106 F6.2 deg SGLAT Supergalactic latitude 110-113 F4.2 deg ClusRad Cluster radius: 0.09326 * Diam 116-122 F7.3 deg2 ClusArea Cluster area: 0.02733 * Diam**2 126-130 I5 ct/deg2 Pop Mean apparent population (galaxies/sq.deg) -------------------------------------------------------------------------------- Note (1): Cluster type is '1'=open; '2'=medium compact; '3'=compact Note (2): DistGroup is: '1'= near '4'= very distant '2'= medium distant '5'= extremely distant '3'= distant Note (3): Lambert projection is explained above in Note(3) of file: abell. -------------------------------------------------------------------------------- Byte-by-byte Description of file: zwindex -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 2- 5 I4 --- Zwicky Zwicky cluster number 8- 9 I2 h RAh Hours RA, 1950.0 11- 14 F4.1 min RAm Minutes RA, 1950.0 17 A1 --- DE- Sign Dec, 1950.0 18- 19 I2 deg DEd Degrees Dec, 1950.0 21- 22 I2 arcmin DEm Minutes Dec, 1950.0 25- 27 I3 --- Area1 [1/559]? Plate area containing cluster (1) 29- 31 I3 --- Number1 [1/120]? Cluster number within plate area (1) 34- 36 I3 --- Area2 [1/559]? Plate area containing cluster (1) 38- 40 I3 --- Number2 [1/120]? Cluster number within plate area (1) 43- 45 I3 --- Area3 [1/559]? Plate area containing cluster (1) 47- 49 I3 --- Number3 [1/120]? Cluster number within plate area (1) 52- 54 I3 --- Area4 [1/559]? Plate area containing cluster (1) 56- 58 I3 --- Number4 [1/120]? Cluster number within plate area (1) 61- 63 I3 --- Area5 [1/559]? Plate area containing cluster (1) 65- 67 I3 --- Number5 [1/120]? Cluster number within plate area (1) 70- 72 I3 --- Area6 [1/559]? Plate area containing cluster (1) 74- 76 I3 --- Number6 [1/120]? Cluster number within plate area (1) 79- 81 I3 --- Area7 [1/559]? Plate area containing cluster (1) 83- 85 I3 --- Number7 [1/120]? Cluster number within plate area (1) 88- 90 I3 --- Area8 [1/559]? Plate area containing cluster (1) 92- 94 I3 --- Number8 [1/120]? Cluster number within plate area (1) 97- 99 I3 --- Area9 [1/559]? Plate area containing cluster (1) 101-103 I3 --- Number9 [1/120]? Cluster number within plate area (1) 106-108 I3 --- Area10 [1/559]? Plate area containing cluster (1) 110-112 I3 --- Number10 [1/120]? Cluster number within plate area (1) 115-117 I3 --- Area11 [1/559]? Plate area containing cluster (1) 119-121 I3 --- Number11 [1/120]? Cluster number within plate area (1) 124-126 I3 --- Area12 [1/559]? Plate area containing cluster (1) 128-130 I3 --- Number12 [1/120]? Cluster number within plate area (1) -------------------------------------------------------------------------------- Note (1): Up to 12 Zwicky plate numbers and cluster numbers within the plates (a cluster often spreads into several plate areas). Pairs are sorted in order of increasing order of plate-area number. Historical Notes: * The catalogue has been prepared initially by the Bulgarian Academy of Sciences * See in "adc.doc" file, section 4, from the "Selected Astronomical Catalogs" Vol. 1 CD-ROM (1992), directory: /cd6/nonstell/galaxies/abzwclus ================================================================================ (End) Francois Ochsenbein [CDS] 12-Apr-1995