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J/ApJ/565/208       Galaxy pairs in the CNOC2 Redshift Survey (Patton+, 2002)

Dynamically close galaxy pairs and merger rate evolution in the CNOC2 Redshift Survey. Patton D.R., Pritchet C.J., Carlberg R.G., Marzke R.O., Yee H.K.C., Hall P.B., Lin H., Morris S.L., Sawicki M., Shepherd C.W., Wirth G.D. <Astrophys. J. 565, 208 (2002)> =2002ApJ...565..208P
ADC_Keywords: Galaxy catalogs ; Redshifts Keywords: galaxies: evolution - galaxies: interactions - surveys Abstract: We investigate redshift evolution in the galaxy merger and accretion rates, using a well-defined sample of 4184 galaxies with 0.12≤z≤0.55 and RC≤21.5. We identify 88 galaxies in close (5≤rp≤20h-1kpc) dynamical (Δ≤500km/s) pairs. These galaxies are used to compute global pair statistics, after accounting for selection effects resulting from the flux limit, k-corrections, luminosity evolution, and spectroscopic incompleteness. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 62 44 CNOC2 close pairs
See also: J/ApJS/129/475 : The CNOC2 survey. I. (Yee+, 2000) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Sample Sample designation (1) 9- 10 I2 --- [PPC2002] [1/44] Pair number 12- 17 I6 --- GalA CNOC2 identification (PPP number) of galaxy A ([PPC2002] NNA in Simbad) 19- 24 I6 --- GalB CNOC2 identification (PPP number) of galaxy B ([PPC2002] NNB in Simbad) 26- 29 F4.1 kpc rp Pojected physical separation 31- 33 I3 km/s DeltaV Rest-frame line-of-sight velocity difference of the galaxies 35- 36 I2 h RAh Right ascension of the pair center (J2000.0) 38- 39 I2 min RAm Right ascension of the pair center (J2000.0) 41- 44 F4.1 s RAs Right ascension of the pair center (J2000.0) 46 A1 --- DE- Declination sign of the pair center (J2000.0) 47- 48 I2 deg DEd Declination of the pair center (J2000.0) 50- 51 I2 arcmin DEm Declination of the pair center (J2000.0) 53- 54 I2 arcsec DEs Declination of the pair center (J2000.0) 56- 62 F7.5 --- z Mean redshift of the pair
Note (1): The CNOC2 survey covers four well-separated patches on the sky, each subtending ∼0.4°2. These patches have been assigned names based on their equatorial coordinates (B1950.0), as follows: 0223+00, 0920+37, 1447+09, and 2148-05. Each patch consists of a contiguous L-shaped region with a central block. These patches were chosen to avoid bright stars, known low-redshift clusters, and other bright objects at low redshift.
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 10-Apr-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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