Astronomical Data Center
ADC/CDS Standard Document for Catalog:
/journal_tables/ApJS/102/289/
The following is the "ReadMe" document that describes this ADC catalog. You can access the files described here in three ways:
J/ApJS/102/289 CNOC cluster redshift survey catalogs. II. (Yee+, 1996)
================================================================================
The CNOC cluster redshift survey catalogs. II. Abell 2390.
Yee H.K.C., Ellingson E., Abraham R.G., Gravel P., Carlberg R.G.,
Smecker-Hane T.A., Schade D., Rigler M.
<Astrophys. J. Suppl. Ser. 102, 289 (1996)>
=1996ApJS..102..289Y (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Galaxy catalogs ; Clusters, galaxy ; Redshifts
Keywords: catalogs - galaxies: clusters: individual (A2390) -
galaxies: distances and redshifts - galaxies: photometry
Description:
A photometric and redshift catalog of galaxies in the field of the
rich galaxy cluster Abell 2390 (z=0.228) is presented as part of the
CNOC cluster redshift survey carried out at the Canada-France-Hawaii
Telescope (CFHT) using the MOS imaging multiobject spectrograph. Using
five separate fields, the imaging and spectroscopic observations cover
a strip of approximately 7.3'x43.2', centered on the cluster.
Redshifts for 327 galaxies, primarily ranging in magnitude from r=17
to 22, were obtained. The data set is also presented graphically in
several forms. The magnitude, geometric, and color selection functions
for the redshift sample are discussed and presented.
Objects:
-----------------------------------------
RA (2000) DE Designation(s)
-----------------------------------------
21 53.6 +17 40 ACO 2390
-----------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 65 536 Abell 2390 catalog
table2.tex 193 339 LaTeX version of table2
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 I6 --- PPP Object number (1)
8- 14 F7.1 arcsec oRA Offset in right ascension (2)
16- 21 F6.1 arcsec oDE Offset in declination (2)
23- 27 F5.2 mag rmag r magnitude
29- 33 F5.2 mag g-r ? g-r color index
35- 41 F7.5 --- z ? Heliocentric redshift
43- 45 I3 10-5 e_z ? rms uncertainty on z
47- 50 F4.1 --- R ? Correlation significance parameter
52- 53 I2 --- Class ? Spectral classification of object (3)
55- 59 F5.2 --- Wm Magnitude selection weight
61- 64 F4.2 --- Wxy Geometric selection weight
--------------------------------------------------------------------------------
Note (1): The identification number is made of:
- The first digit denotes the field of origin for the galaxy with
the numbers 1, 2, 3, 4, and 5 representing the central, east 1,
west 1, east 2 and west 2 field, respectively.
- The second digit indicates whether the object is observed in one
field or in an overlapping area from two fields. In the former,
the second digit is 0; and in the latter, the second digit
represents the field number of the overlapping field.
- The last four digits denote the object number for each object
within its own field, starting from the southern edge of the
field, increasing to the north.
Note (2): Offset from the first rank galaxy (positive is east and north).
Note (3): the classification is:
1 and 2: elliptical
3: E+A
4: Sbc
5: emission-line (Irr)
6: active galactic nucleus/ quasar
77: star
99: observed spectroscopically but no redshift obtained
--------------------------------------------------------------------------------
Courtesy: Howard Yee <hyee@cfht.hawaii.edu>
================================================================================
(End) Patricia Bauer [CDS] 14-Aug-1996
Go to ADC Home Page