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J/ApJ/634/977         Redshifts in Cl 0024+16 members             (Moran+, 2005)

A Wide-Field Hubble Space Telescope survey of the cluster Cl 0024+16 at z=0.4. III. Spectroscopic signatures of environmental evolution in early-type galaxies. Moran S.M., Ellis R.S., Treu T., Smail I., Dressler A., Coil A.L., Smith G.P. <Astrophys. J., 634, 977-1001 (2005)> =2005ApJ...634..977M
ADC_Keywords: Clusters, galaxy ; Redshifts Keywords: galaxies: clusters: individual (Cl 0024+1654) - galaxies: elliptical and lenticular, cDgalaxies: evolution - galaxies: formation - galaxies: fundamental parameters - galaxies: kinematics and dynamics Abstract: We report results from a panoramic spectroscopic survey of 955 objects in the field of the rich cluster Cl 0024+1654 (z∼0.4), complementing the HST imaging presented in the first paper in this series. Combining with previous work, we compile a catalog of 1394 unique redshifts in the field of this cluster (1334 in Table 2), including 486 cluster members spread across an area 10Mpc in diameter. Our new spectroscopic sample includes over 200 high-quality spectra of cluster members. We examine the properties of a large sample of 104 cluster early-type galaxies as a function of cluster radius and local density, using them as sensitive tracers of the various physical processes that may be responsible for galaxy evolution. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 54 104 Observed E+S0 cluster members table2.dat 48 1334 Cl 0024+1654 redshift catalog table3.dat 61 104 All measurements of observed E+S0 members
See also: J/ApJ/591/53 : I photometry of Cl 0024+16 (Treu+, 2003) J/A+A/372/391 : Spectroscopic Survey of Cl 0024+1654 (Czoske+, 2001) J/ApJS/94/687 : Old stellar populations. V. (Worthey+, 1994) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Object name (G1) 11- 17 F7.5 deg RAdeg Right Ascension (J2000.0) 19- 26 F8.5 deg DEdeg Declination (J2000.0) 28- 33 F6.4 --- z Redshift 35- 39 F5.2 mag Imag I (F814W) magnitudes (1) 41- 44 F4.2 Mpc R Projected radius of the galaxy 46- 49 I4 Mpc-2 Sigma Local density Σ10 of the galaxy (2) 51- 54 A4 --- MType Morphological type
Note (1): F814W magnitudes are corrected for Galactic extinction, adopting E(B-V)=0.057 (Schlegel et al. 1998ApJ...500..525S). Errors in F814W magnitudes are less than 0.05mag rms. Note (2): Typical uncertainty in 10 is 25%, equal to the rms variation in the local density across different measurement methods.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 F8.6 deg RAdeg Right Ascension in decimal degrees (J2000) 10- 18 F9.6 deg DEdeg Declination in decimal degrees (J2000) 20- 26 F7.4 --- z Most reliable redshift 28 I1 --- q_z [0/3] Quality flag on z (1) 30 I1 --- r_z [1/5] Source flag on z (2) 32- 38 F7.4 --- <z> Mean redshift when multiple sources available 40- 46 F7.4 --- e_<z> The rms difference in <z> 48 I1 --- o_<z> Number of redshift sources in <z>
Note (1): Quality flag on z, defined as follows: 0 = Unspecified by source; 1 = Secure; 2 = Probable; 3 = Uncertain. Note (2): Source flag on z, defined as follows: 1 = Czoske et al. (2001, Cat. J/A+A/372/391); 2 = Frazier Owen (private communication); 3 = Hale/COSMIC; 4 = Keck/LRIS; 5 = Keck/DEIMOS
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Object name (G1) 11- 15 F5.1 0.1nm [OII] Line strength index of [OII] (Error∼0.1Å) (1) 17- 20 F4.1 0.1nm HdA Line strength index of HδA (Error∼0.2Å) (1) 22- 25 F4.1 0.1nm HgA ? Line strength index of HγA (Error∼0.2Å) (1) 27- 29 F3.1 0.1nm Mgb ? Line strength index of Mgb (Error∼0.1Å) (1) 31- 34 F4.1 0.1nm Fe5270 ? Line strength index of Fe at 5270Å (Error∼0.1Å) (1) 36- 39 F4.1 0.1nm Fe5335 ? Line strength Fe index at 5335Å (Error∼0.1Å) (1) 41- 43 I3 km/s sigma0 ? Velocity dispersion (2) 45- 46 I2 km/s e_sigma0 ? Error in sigma0 48- 52 F5.2 mag/arcsec2 <muV> ? Mean surface brightness (Error∼0.1mag) (3) 54- 56 F3.1 arcsec Re ? Effective radius (Error∼0.1") 58- 61 F4.1 10nm-1 S/N Signal to noise ratio (Å-1, observed)
Note (1): Line strengths are given in angstroms of equivalent width, with negative values denoting emission and positive values indicating absorption. No aperture corrections have been applied to the indices. Note (2): The values are aperture corrected to a 3.4" diameter aperture at the distance to the Coma Cluster. Note (3): Mean surface brightness within the effective radius, Re, in rest-frame V band and is corrected for cosmological dimming.
Global Notes: Note (G1): Objects identified as [TEK2003] NN-N-NNN in Simbad (for example: p15i144c4 translates into [TEK2003] 15-4-144)
History: From electronic version of the journal References: Treu et al., Paper I 2003ApJ...591...53T, Cat. J/ApJ/591/53 Kneib et al., Paper II 2003ApJ...598..804K
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 20-Oct-2006
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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