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J/AJ/132/197        Close pairs of galaxies                  (Woods+, 2006)

Tidally triggered star formation in close pairs of galaxies: major and minor interactions. Woods D.F., Geller M.J., Barton E.J. <Astron. J., 132, 197-209 (2006)> =2006AJ....132..197W
ADC_Keywords: Galaxies, photometry ; Redshifts Keywords: galaxies: evolution - galaxies: interactions - galaxies: stellar content Abstract: We study star formation in a sample of 345 galaxies in 167 pairs and compact groups drawn from the original CfA2 Redshift Survey and from a follow-up search for companions. We construct our sample with attention to including pairs with luminosity contrast |ΔmR|≥2. These 57 galaxies with |ΔmR|≥2 provide a set of nearby representative cases of minor interactions, a central feature of the hierarchical galaxy formation model. Here we report the redshifts and positions of the 345 galaxies in our sample and of 136 galaxies in apparent pairs that are superpositions. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 63 356 Galaxy data for members of pairs table2.dat 63 136 Galaxy data for non-member galaxies table3.dat 62 63 Absolute photometry for galaxies in our DW sample
See also: VII/77 : Isolated Pairs of Galaxies in Northern Hemisphere (Karachentsev 1972) J/ApJS/121/287 : The CfA2S catalog (Huchra+, 1999) J/A+AS/110/19 : Kinematical observations of pairs of galaxies (Davoust+ 1995) J/A+AS/110/131 : Mixed pairs of galaxies. I. (Rampazzo+, 1995) J/A+AS/110/371 : Southern binary galaxies. I. (Soares+, 1995) J/ApJ/511/595 : An X-Ray Survey of Galaxies in Pairs (Henriksen+, 1999) J/other/ApL/30.1 : Southern cat. of isolated pairs extension (Reduzzi+ 1995) J/ApJ/582/668 : Colours and Hα in galaxy pairs (Barton Gillespie+, 2003) J/AJ/129/682 : Structural properties of S+S galaxies (Hernandez-Toledo+ 2005) J/AJ/130/1516 : MCG pairs and triples of galaxies (De Propris+, 2005) J/A+A/456/467 : New sample of bright galaxy pairs in UZC (Focardi+, 2006) Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 12 A12 --- [WGB2006] Galaxy identification (G1) 13 A1 --- m_[WGB2006] [a-k] Multiplicity index on [WGB2006] 15- 16 I2 h RAh Hour of Right Ascension (J2000) 18- 19 I2 min RAm Minute of Right Ascension (J2000) 21- 25 F5.2 s RAs Second of Right Ascension (J2000) 27 A1 --- DE- Sign of the Declination (J2000) 28- 29 I2 deg DEd Degree of Declination (J2000) 31- 32 I2 arcmin DEm Arcminute of Declination (J2000) 34- 38 F5.2 arcsec DEs Arcsecond of Declination (J2000) 40- 44 I5 km/s cz Radial velocity 46- 47 I2 km/s e_cz ? Error in cz (2) 49- 51 I3 0.1nm EW ? Halpha equivalent width in Angstroms (3) 53- 57 F5.2 mag DRmag ? R-band magnitude difference DeltaR (4) 59- 61 A3 --- Type Galaxy type (5) 63 A1 --- Phot [*] indicates absolute photometry in table3
Note (2): Error measurement is based on the derived r value (Tonry & Davis, 1979AJ.....84.1511T) and the FWHM of the correlation peak used to obtain cz. See Section 3.2 in Kurtz & Mink (1998PASP..110..934K) for a detailed description of the error measurement. Note (3): Corrected for Balmer absorption. Error in EW is ±18%, described in Section 3.2. Only in table1. Note (4): ΔR<0 for the brighter of the pair and ΔR>0 for the fainter (only in table1). Note (5): Galaxy type (only in table1) as follows: gal = galaxy int = intermediate agn = AGN
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 12 A12 --- [WGB2006] Galaxy identification (G1) 13 A1 --- m_[WGB2006] [a-g] Multiplicity index on [WGB2006] 15- 16 I2 h RAh Hour of Right Ascension (J2000) 18- 19 I2 min RAm Minute of Right Ascension (J2000) 21- 25 F5.2 s RAs Second of Right Ascension (J2000) 26 A1 --- DE- Sign of Declination (J2000) 27- 28 I2 deg DEd Degree of Declination (J2000) 30- 31 I2 arcmin DEm Arcminute of Declination (J2000) 33- 37 F5.2 arcsec DEs Arcsecond of Declination (J2000) 39- 44 F6.2 mag RMAG Absolute R band magnitude (1) 46- 51 F6.2 mag BMAG ? Absolute B band magnitude (1) 53- 62 A10 "YYYY/MM/DD" Obs.Date Date of the observation
Note (1): Error in RMAG and BMAG is 0.12 magnitudes.
Global Notes: Note (G1): the name has the format "HHMMSS+DDMMm" in all the tables, but also "nogal_NNN" in table1. In the "HHMMSS+DDMMm" format, the last digit (m) is always 0; the "HHMMSS+DDMM" part represents the Zwicky identification, generally written "Z HHMM.m+DDMM" History:
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 31-Aug-2007
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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