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J/A+A/486/755   Parameters of galaxies in 8 Abell clusters     (Thomas+, 2008)

Star-forming galaxies in low-redshift clusters: Data and integrated galaxy properties. Thomas C.F., Moss C., James P.A., Bennett S. M., Aragon-Salamanca A, Whittle M. <Astron. Astrophys. 486, 755 (2008)> =2008A&A...486..755T
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, CCD Keywords: galaxies: clusters: general - galaxies: evolution - galaxies: interactions Abstract: This paper is a continuation of an ongoing study of the evolutionary processes affecting cluster galaxies. Both CCD R band and Halpha narrow-band imaging was used to determine photometric parameters (mr, r24, Halpha flux, and equivalent width) and derive star formation rates for 227 CGCG galaxies in 8 low-redshift clusters. The galaxy sample is a subset of CGCG galaxies in an objective prism survey (OPS) of cluster galaxies for Halpha emission. It is found that detection of emission-line galaxies in the OPS is 85%, 70%, and 50% complete at the mean surface brightness values of 1.25x10-19, 5.19x10-20, and 1.76x10-20W/m2/arcsec2, respectively, measured within the R band isophote of 24mag/arcsec2 for the galaxy. The CCD data, together with matched data from a recent Halpha galaxy survey of UGC galaxies within 3000km/s, will be used for a comparative study of R band and Halpha surface photometry between cluster and field spirals. Description: Global parameters for 227 CGCG galaxies in eight low redshift Abell clusters are presented. Galaxies in the following clusters have been observed: A262, A347, A400, A426, A569, A779, A1367, and A1656. For each galaxy the observing run and Halpha filter used, the absolute B magnitude, galaxy type, Right ascension and Declination, major-to-minor axis ratio, position angle, 24mag/arcsec2 isophotal radius, R band apparent magnitude, Halpha flux and EW, and global star formation rate are given. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 01 52 50.4 +36 08 46 Abell 262 = ACO 262 02 25 50. +41 52 30 Abell 347 = ACO 347 02 57 37.4 +06 00 45 Abell 400 = ACO 400 07 09 10.4 +48 37 10 Abell 569 = ACO 569 09 19 48.0 +33 45 32 Abell 779 = ACO 779 11 44 44.6 +19 41 59 Abell 1367 = ACO 1367 12 59 48.7 +27 58 50 Abell 1656 = ACO 1656 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 108 227 Global parameters for 227 CGCG galaxies in eight low-redshift Abell clusters
See also: VII/49 : Galaxies and Clusters of Galaxies (CGCG) (Zwicky, 1968) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 5 A5 --- --- Abell 7- 10 I4 --- Abell Abell cluster number 12- 19 A8 --- CGCG Zwicky et al. galaxy number (Cat. VII/49) (1) 21- 25 A5 --- Run Observing run (2) 27- 30 A4 --- HaFltr Halpha filter used (3) 32- 36 F5.1 mag BMAG Absolute B magnitude 38- 48 A11 --- MType Galaxy Morphological Type 49 A1 --- r_MType [+] Reference for Mtype (4) 51- 52 I2 h RAh Right Ascension J2000 (hours) 54- 55 I2 min RAm Right Ascension J2000 (minutes) 57- 60 F4.1 s RAs Right Ascension J2000 (seconds) 62 A1 --- DE- Declination J2000 (sign) 63- 64 I2 deg DEd Declination J2000 (degrees) 66- 67 I2 arcmin DEm Declination J2000 (minutes) 69- 70 I2 arcsec DEs Declination J2000 (seconds) 72- 74 F3.1 --- a/b major-to-minor axis ratio 76- 78 I3 deg PA ? Position angle 80- 81 I2 arcsec r24 ? 24mag/arcsec2 isophotal radius 83- 87 F5.2 mag Rmag R band apparent magnitude (5) 89- 91 I3 10-17W/m2 FHa ? Halpha flux (6) 93- 94 I2 10-17W/m2 e_FHa ? rms uncertainty on FHa (6) 96- 99 F4.1 nm EWHa ? Halpha equivalent width (6) 101-103 F3.1 nm e_EWHa ? rms uncertainty on EWHa (6) 105-108 F4.1 solMass/yr SFR ? Global star formation rate
Note (1): The numbering of CGCG galaxies (Catalog of Galaxies and Clusters of Galaxies) in field 160 (Abell 1656) follows that of the SIMBAD database, with an enumeration in order of increasing RA. Note (2): Run as follows: JKT92 = Jacobus Kapteyn Telescope 1992 (service data) JKT94 = Jacobus Kapteyn Telescope December 1994 JKT97 = Jacobus Kapteyn Telescope November 1997 JKT98 = Jacobus Kapteyn Telescope March 1998 NOT = Nordic Optical Telescope (5-8 January 2005) Note (3): See figures 1a and 1b for transmission profiles. Note (4): When blank, galaxy type taken from Moss, Whittle & Pesce (1998MNRAS.300..205M); Moss & Whittle (2000MNRAS.317..667M, 2005, Cat. J/MNRAS/357/1337). When +, galaxy type from NED (for galaxies for which no type is listed by these authors) Note (5): The typical error in R band apparent magnitude is ∼0.02mag. Note (6): Within the R band 24mag/arcsec2 isophote.
Acknowledgements: Claire Thomas, cft(at)astro.livjm.ac.uk
(End) Claire Thomas [LJMU/ROG], Patricia Vannier [CDS] 05-Jun-2008
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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