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J/MNRAS/404/1490  Shapes of BCGs in nearby clusters shapes (Fasano+, 2010)

The shapes of BCGs and normal ellipticals in nearby clusters. Fasano G., Bettoni D., Ascaso B., Tormen G., Poggianti B.M., Valentinuzzi T., D'Onofrio M., Fritz J., Moretti A., Omizzolo A., Cava A., Moles M., Dressler A., Couch W.J., Kjaergaard P., Varela J. <Mon. Not. R. Astron. Soc., 404, 1490-1504 (2010)> =2010MNRAS.404.1490F
ADC_Keywords: Clusters, galaxy ; Galaxies, nearby ; Morphology Keywords: galaxies: clusters: general - galaxies: elliptical and lenticular, cD - galaxies: general Abstract: We compare the apparent axial ratio distributions of the brightest cluster galaxies (BCGs) and normal ellipticals (Es) in our sample of 75 galaxy clusters from the WIde-field Nearby Galaxy-cluster Survey (WINGS). Most BCGs in our clusters (69 per cent) are classified as cD galaxies. The sample of cDs has been completed by 14 additional cDs (non-BCGs) we found in our clusters. We deproject the apparent axial ratio distributions of Es, BCGs and cDs using a bivariate version of the Lucy rectification algorithm, whose results are supported by an independent Monte Carlo technique. Finally, we compare the intrinsic shape distribution of BCGs to the corresponding shape distribution of the central part of cluster-sized dark matter haloes extracted from the GIF2 Lambda cold dark matter ({LAMBDA}CDM) N-body simulations (Gao et al., 2004MNRAS.355..819G). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 114 75 Main properties of the BCG sample and of the host clusters table2.dat 95 14 Main properties of the additional cD sample
See also: VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003) J/MNRAS/281/799 : XBACs, the sample (Ebeling+, 1996) J/MNRAS/301/881 : The ROSAT brightest cluster sample - I. (Ebeling+, 1998) J/MNRAS/318/333 : Extended ROSAT Bright Cluster Sample (Ebeling+ 2000) J/A+A/495/707 : WINGS spectroscopy of 48 galaxy clusters (Cava+, 2009) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Cluster Cluster name 10- 13 F4.2 [10+37W] log(LX) Decimal logarithm of the X-ray luminosity in the 0.1-2.4keV band (1) 15- 19 F5.3 [km/s] log(sig) ? Decimal logarithm of the velocity dispersion of cluster galaxies (2) 21- 26 F6.4 --- z Average redshifts of clusters (2) 28- 32 A5 --- --- [WINGS] 33- 51 A19 --- WINGS WINGS name (JHHMMSS.ss+DDMMSS.s) (G3) 53- 54 A2 --- MT Morphological Type 56- 61 F6.2 mag VMAG Total absolute magnitude in the V band (G4) 63- 68 F6.2 mag KMAG ? 2MASS Ks band total absolute magnitude 70- 74 F5.2 kpc Re ? Effective radius from GASPHOT (G5) 76- 78 F3.1 --- n ? Sersic index from GASPHOT (G5) 80- 84 F5.3 --- qG Axial ratio at the effective isophote from GASPHOT (6) 86- 90 F5.3 --- q15 ? Axial ratios of the isophotes at 15kpc of major axis from GASPHOT 92- 96 F5.3 --- q30 ? Axial ratios of the isophotes at 30kpc of major axis from GASPHOT 98-102 F5.3 --- q60 ? Axial ratios of the isophotes at 30kpc of major axis from GASPHOT 104-108 F5.3 --- qS ? Axial ratio at the threshold area from Varela et al. (2009, J/A+A/497/667 sextractor) 110-114 F5.3 --- qL ? Axial ratio from the LEDA Hypercat data base (Paturel et al., 2003, Cat. VII/237)
Note (1): from Ebeling et al. (1996, Cat. J/MNRAS/281/799, 1998, Cat. J/MNRAS/301/881, 2000, Cat. J/MNRAS/318/333). Note (2): from Cava et al. (2009, Cat. J/A+A/495/707). Some values have been updated, according to Cava et al. (in preparation). Note (6): In case GASPHOT failed to converge, we derive inline image from the equation inline image (obtained from the linear best fit of the relation in panel 15 of Fig. 1.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Cluster Cluster name 10- 14 A5 --- --- [WINGS] 15- 33 A19 --- WINGS WINGS name (JHHMMSS.ss+DDMMSS.s) (G3) 35 I1 --- Rank [2/3] Luminosity ranking in the V band 37- 42 F6.2 mag VMAG Total absolute magnitude in the V band (G4) 44- 49 F6.2 mag KsMAG ? 2MASS K band total absolute magnitude 51- 55 F5.2 kpc Re ? Effective radius from GASPHOT (G5) 57- 59 F3.1 --- n ? Sersic index from GASPHOT (G5) 61- 65 F5.3 --- qG Axial ratio at the effective isophote from GASPHOT 67- 71 F5.3 --- q15 Axial ratios of the isophotes at 15kpc of major axis from GASPHOT 73- 77 F5.3 --- q30 Axial ratios of the isophotes at 30kpc of major axis from GASPHOT 79- 83 F5.3 --- q60 ? Axial ratios of the isophotes at 30kpc of major axis from GASPHOT 85- 89 F5.3 --- qS Axial ratio at the threshold area from Varela et al. (2009, J/A+A/497/667 sextractor) 91- 95 F5.3 --- qL Axial ratio from the LEDA Hypercat data base (Paturel et al., 2003, Cat. VII/237).
Global notes: Note (G3): WINGS identifier from Varela et al. (2009, Cat. J/A+A/497/667). Note (G4): from Varela et al. (2009, Cat. J/A+A/497/667, corrected for galactic extinction) Note (G5): Missing values indicate that GASPHOT failed to converge.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Nov-2010
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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