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J/ApJ/264/337       CCD photometry of Abell clusters         (Schneider+, 1983)

CCD photometry of Abell clusters. I. Magnitudes and redshifts for 84 brightest cluster galaxies. Schneider D.P., Gunn J.E., Hoessel J.G. <Astrophys. J., 264, 337-355 (1983)> =1983ApJ...264..337S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Photometry, CCD ; Redshifts Keywords: cosmology - galaxies: clusters of - galaxies: photometry Abstract: A sample of 84 Abell clusters has been selected to determine how the luminosity of the brightest cluster galaxy varies with cluster parameters. The clusters are of moderate redshift (0.04<z<0.30) and have a wide range of richness (Abell richness classes 0 to 5). Redshifts and two-color photometry for these galaxies are presented. A photometric system is developed which is well matched to the detector (low noise CCD) and to placing galaxies of vastly different redshifts on a standard system. These measurements are combined with earlier work to form a low redshift sample of 199 brightest cluster galaxies. The data confirm that the dispersion in the luminosities of first-rank cluster galaxies is 0.34mag. The colors of giant ellipticals have not changed since redshifts of 0.25. The trend of luminosity with Bautz-Morgan class matches those in previous investigations (-0.12mag per class, with BM I being 0.3mag brighter than the average cluster). The richness correction is reasonably well established at 0.10 magnitude per Abell richness class (rich clusters have brighter galaxies). There is a small uncertainty in the richness correction because the very rich clusters are, on average, more distant than the poorer ones. Application of these corrections reduces the luminosity dispersion slightly, to 0.29mag. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 100 84 Data on the richness sample
See also: VII/87 : Data on 1889 Abell's clusters of galaxies (Leir+ 1977) J/AJ/101/1561 : Isophotometry of ellipticals in Abell clusters (Porter+ 1991) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Abell Abell designation (ANNNN) (1) 7- 8 I2 h RA1h Right ascension (B1950.0) 9- 10 I2 min RA1m Right ascension (B1950.0) 11- 13 F3.0 s RA1s Right ascension (B1950.0) 14 A1 --- DE1- Declination sign (B1950.0) 15- 16 I2 deg DE1d Declination (B1950.0) 17- 18 I2 arcmin DE1m Declination (B1950.0) 19- 20 I2 arcsec DE1s Declination (B1950.0) 22- 23 I2 h RAh Right ascension (J2000.0) 24- 25 I2 min RAm Right ascension (J2000.0) 26- 29 F4.1 s RAs Right ascension (J2000.0) 30 A1 --- DE- Declination sign (J2000.0) 31- 32 I2 deg DEd Declination (J2000.0) 33- 34 I2 arcmin DEm Declination (J2000.0) 35- 36 I2 arcsec DEs Declination (J2000.0) 39- 43 F5.1 deg GLON Galactic longitude 44- 48 F5.1 deg GLAT Galactic latitude 50 A1 --- R Abell richness class 52 A1 --- D Abell distance class 54- 60 A7 --- BM Bautz-Morgan class 62- 66 F5.4 --- z Redshift 68- 70 A3 --- ref Reference (2) 72- 76 F5.2 mag rmag r magnitude 78- 82 F5.2 mag g-r g-r colour index 84- 87 F4.2 mag GalAbs Galactic absorption 90- 94 F5.2 mag GImag Standard magnitude 96-100 F5.2 mag RAM Reduced absolute magnitude
Note (1): Positions for brightest galaxy accurate to ±15"; redshift error aprox. 250km/s, z is CORRECTED for solar motion! only for A1190, A1689, A1825 and A2377 there is a brighter galaxy within 90"Note (2): Redshift references and notes: Note (2): Redshift references and notes: 1) 1973PASP...85..281Sargent 2) 1976ApJ...205..688Sandage, Kristian, & Westphal 3) 1978ApJ...221..383Kristian, Sandage. & Westphal *: Redshift is mean of two close, roughly equal components P: Redshift obtained with PFUEI/CCD. R: Redshift obtained with Reticon.
History: Prepared via OCR. Acknowledgements: Heinz Andernach (catalog A432 in his collection) References: Schneider et al., Paper II 1983ApJ...268..476S Hoessel & Schneider, Paper IV 1985AJ.....90.1648H Porter at al., Paper V 1991AJ....101.1561P, Cat. J/AJ/101/1561
(End) Patricia Bauer [CDS] 30-Nov-2003
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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