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 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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 62 44 CNOC2 close pairs
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See also:
J/ApJS/129/475 : The CNOC2 survey. I. (Yee+, 2000)
http://lepus.astro.utoronto.ca/~cnoc/cnoc2.html : CNOC2 Field Galaxy survey
home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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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
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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.
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 10-Apr-2002