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J/other/ApL/30.1 Southern catalogue of isolated pairs extension (Reduzzi+ 1995)
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Candidates for a southern extension of the Karachentsev catalogue of isolated
pairs of galaxies
Reduzzi L., Rampazzo R.
<Astrophys. Lett., 30, 1 (1995)>
=1995ApL....30....1R (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxy catalogs ; Galaxies, photometry ; Redshifts
Abstract:
The paper presents a sample of double galaxies selected from The
Surface Photometry Catalog of the ESO-Uppsala Galaxies
(Cat. <VII/115>) using the Karachentsev (1972: K72, Cat. <VII/77>)
criteria. Considering the large and growing number of observing
facilities in that hemisphere, the sample aims to supply investigators
with targets as homogeneous as possible to those in the Northern
Catalog of Isolated Pairs of Galaxies (K72) which have been studied in
a large frequency range. The paper discusses the sample degree of
completeness, separation and velocity distributions. First inferences
are sketched from the morphological association of pair members and
from the study of the Holmberg effect. Being the primary purpose of
the paper to provide a tool to investigators, an Atlas of images for
the 301 best candidate pairs obtained using the Digitized Sky Survey
(The Digitized Sky Survey was produced at the Space Telescope Science
Institute (ST ScI) under U.S. Government grant NAG W-2166) is given.
The Atlas reports for each pair member the relevant data as obtained
from the current literature.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 73 818 Complete catalog of 409 candidate pairs
table2.dat 84 214 Southern catalogue of isolated pairs candidates
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See also:
VII/77 : Isolated pairs of galaxies catalogue (Karachentsev+ 1972)
VII/115 : ESO-LV catalogue (Lauberts+ 1989)
J/A+AS/110/371 : Sourthern binary galaxies. I. (Soares+, 1995)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- No Pair number
5- 11 I7 --- ESO ESO-LV (Cat. <VII/115>) identification number
13- 14 I2 h RAh Right ascension (1950)
16- 17 I2 min RAm Right ascension (1950)
19- 20 I2 s RAs Right ascension (1950)
22 A1 --- DE- Declination sign
23- 24 I2 deg DEd Declination (1950)
26- 27 I2 arcmin DEm Declination (1950)
29- 30 I2 arcsec DEs Declination (1950)
32- 36 F5.1 arcsec a25 ? Diameter at {mu}_B_=25mag/arcsec^2^
38- 42 F5.1 arcsec aB90 Diameter encircling 90% of the total light in B
44- 48 F5.2 mag Bmag Apparent total B magnitude
50- 53 F4.1 --- T T (Hubble stage) (1)
55- 61 F7.1 arcsec Sep ? Distance between components
63- 67 I5 km/s cz ? Systemic velocity
69- 73 F5.3 --- Ntot ? Projected surface density (1)
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Note (1): number of galaxies, per square degree, within 1 degree radius
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- No Pair number
5- 11 I7 --- ESO ESO-LV (Cat. <VII/115>) identification number
13- 14 I2 h RAh Right ascension (1950)
16- 17 I2 min RAm Right ascension (1950)
19- 20 I2 s RAs Right ascension (1950)
22 A1 --- DE- Declination sign
23- 24 I2 deg DEd Declination (1950)
26- 27 I2 arcmin DEm Declination (1950)
29- 30 I2 arcsec DEs Declination (1950)
32- 36 F5.1 arcsec a25 ? Diameter at {mu}=25mag/arcsec^2^
38- 42 F5.2 mag Bmag B magnitude
44- 48 F5.2 mag B-R ? B-R colour index
50- 53 F4.1 --- T T (Hubble stage) (1)
55- 59 I5 km/s cz ? Recession velocity
60- 61 A2 --- r_cz cz reference (2)
63- 64 A2 --- Cat Category (3)
66- 70 I5 arcsec Sep ? Distance between components
72- 77 F6.3 --- Ntot ? Projected surface density
78 A1 --- Crit [-+] Criteria (4)
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Note (1): Mean numerical index of stage along the Hubble sequence in RC2 system
Note (2): F: Data from Fairall & Jones (1991, Cat. <VII/142>)
dC: Data from da Costa, 1994, Priv. comm.
Note (3): Some of the galaxies in the field around above pairs are not in the
ESO-LV catalog because their diameter is lower than 1 arcmin.
Further, in a few cases, a single object (or what appears as a single
object) has two distinct entries in the catalog. Inspecting the
fields, using the Digitized Sky Survey, we classified such pairs in
the following way:
PG = possible group
PT = possible triplet
S = single disturbed
OP = optical pair
NO = object that we reject after inspection essentially because in
high density field
Note (4): + : Strengh of the K72 criteria satisfied by the pair
- : Strengh of the K72 criteria not satisfied by the pair
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Acknowledgements: Roberto Rampazzo <rampazzo@brera.mi.astro.it>
History:
* 07-Apr-1997: First version.
* 10-Sep-1999: Updated table2 and complete catalogue from authors
(rampazzo@brera.mi.astro.it)
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(End) James Marcout, Patricia Bauer [CDS] 10-Sep-1999