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J/ApJ/464/79     CFRS XI: High-redshift field galaxies morphology (Schade+ 1996)

Canada-France Redshift Survey. XI. Morphology of high-redshift field galaxies from high-resolution ground-based imaging Schade D., Lilly S.J., Le Fevre O., Hammer H., Crampton D. <Astrophys. J. 464, 79 (1996)> =1996ApJ...464...79S
ADC_Keywords: Galaxies, photometry ; Redshifts ; Morphology Keywords: galaxies: distances and redshifts - galaxies: evolution - galaxies: photometry Abstract: The 143 galaxies with secure redshifts (Zmedian=0.62) from the 1415+52 field of the Canada-France Redshift Survey have been imaged with median seeing of 0.67" (FWHM). Structural parameters have been derived by fitting multicomponent models and the results confirm two phenomena seen in a smaller sample of galaxies imaged with the Hubble Space Telescope. First, 11±3% of the galaxies lie off the normal locus of color versus bulge fraction B/T. This class of objects ("blue nucleated galaxies," or BNGs) was identified using HST observations (Schade et al. 1995ApJ...451L...1S, hereafter CFRS IX), and it was shown that they are associated with peculiar/asymmetric structure and merger/interactions. The observed frequency of BNGs in this sample is 14±4% 0.5<z<1.2 and 6+6-3% at 0.2<z<0.5, but the true frequency is likely to be a factor ∼2 higher after corrections are made for the effect of asymmetric/peculiar structures. Galaxy disks at 0.5<z<1.1 are found to have a mean rest-frame, inclination-corrected central surface brightness of µAB(B)=19.8±0.1mag/arcsec2, ∼1.6mag brighter than the Freeman (1970ApJ...160..811F) value. At low redshift (0.2<z<0.5) the mean surface brightness [µAB(B)=21.3±0.25] is consistent with the Freeman value. These results are consistent with the HST observations. With larger numbers of galaxies and therefore more statistical weight they demonstrate the capabilities, and limits, of ground-based work in the study of galaxy morphology at high redshift. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 47 143 Canada-France Redshift Survey Galaxies at z>0.5
See also: J/ApJ/455/60 : CFRS II: 0000-00 and 1000+25 fields (Le Fevre+ 1995) J/ApJ/455/75 : CFRS III: 1415+52 and 2215+00 fields (Lilly+ 1995) J/ApJ/455/88 : CFRS IV: 0300+00 field (Hammer+ 1995) J/ApJ/481/49 : CFRS XIV. Field galaxies up to z=1 (Hammer+ 1997) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 7 A7 --- CFRS Canada-France Redshift Survey designation 9- 13 F5.3 --- z Redshift 15- 19 F5.2 mag Imag I_AB_ magnitude (1) 21- 24 F4.2 mag V-I (V-I)AB colour index 26- 31 F6.2 mag MBmag Absolute B_AB_ magnitude (2) 33- 37 F5.2 mag U-V (U-V)AB colour magnitude 39- 42 F4.2 --- B/T Colour versus bulge fraction 44- 47 F4.2 kpc h ? Scale length
Note (1): Magnitude is quoted whit the AB normalization scheme (Oke, 1974ApJS...27...21O) Note (2): Absolute magnitudes assume H0=50km/s/Mpc, q0=0.5
History: Prepared via OCR at CDS. References: Lilly S.J. et al., Paper I. =1995ApJ...455...50L Le Fevre O. et al.. Paper II. =1995ApJ...455...60L, Cat. J/ApJ/455/60 Lilly S.J. et al., Paper III. =1995ApJ...455...75L, Cat. J/ApJ/455/75 Hammer F. et al., Paper IV. =1995ApJ...455...88H, Cat. J/ApJ/455/88 Crampton D. et al., Paper V. =1995ApJ...455...96C Lilly S. J. et al., Paper VI. =1995ApJ...455..108L Hammer F. et al., Paper VII. =1995MNRAS.276.1085H Le Fevre O. et al., Paper VIII. =1996ApJ...461..534L Schade D. et al., Paper IX. =1995ApJ...451L...1S Schade D. et al., Paper X. =1996MNRAS.278...95S Tresse L. et al., Paper XII. =1996MNRAS.281..847T Le Fevre et al., Paper XIII. =1996BCFHT..34...10L Hammer et al., Paper XIV. =1997ApJ...481...49H, Cat. J/APJ/481/49
(End) James Marcout, Patricia Bauer [CDS] 27-Mar-1997
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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