Access to Astronomical Catalogues

← Click to display the menu
J/other/ApL/30.1  Southern catalogue of isolated pairs extension (Reduzzi+ 1995)

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)
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 73 818 Complete catalog of 409 candidate pairs table2.dat 84 214 Southern catalogue of isolated pairs candidates
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
Bytes Format Units Label Explanations
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 µB=25mag/arcsec2 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)
Note (1): number of galaxies, per square degree, within 1 degree radius
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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 µ=25mag/arcsec2 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)
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
Acknowledgements: Roberto Rampazzo History: * 07-Apr-1997: First version. * 10-Sep-1999: Updated table2 and complete catalogue from authors ()
(End) James Marcout, Patricia Bauer [CDS] 10-Sep-1999
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

catalogue service

© UDS/CNRS

Contact