Access to Astronomical Catalogues

← Click to display the menu
J/A+A/434/53        GOODS-South Field redshifts              (Vanzella+, 2005)

The Great Observatories Origins Deep Survey VLT/FORS2 Spectroscopy in the GOODS-South Field. Vanzella E., Cristiani S., Dickinson M., Kuntschner H., Moustakas L.A., Nonino M., Rosati P., Stern D., Cesarsky C., Ettori S., Ferguson H.C., Fosbury R.A.E., Giavalisco M., Haase J., Renzini A., Rettura A., Serra P. <Astron. Astrophys. 434, 53 (2005)> =2005A&A...434...53V
ADC_Keywords: Galaxies, spectra ; Redshifts ; Photometry, infrared Keywords: cosmology: observations - cosmology: large scale structure of the universe - galaxies: evolution Abstract: We present the first results of the ESO/GOODS program of spectroscopy of faint galaxies in the Chandra Deep Field South (CDF-S). 399 spectra of 303 unique targets have been obtained in service mode with the FORS2 spectrograph at the ESO/VLT, providing 234 redshift determinations (the median of the redshift distribution is at 1.04). The typical redshift uncertainty is estimated to be sigmaz∼0.001. Galaxies have been color selected in a way that the resulting redshift distribution typically spans from z=0.5 to 2. The reduced spectra and the derived redshifts are released to the community through the ESO web page http://www.eso.org/science/goods/ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 91 301 The spectroscopic catalogue table2.fit 2880 13 FITS version of table2
See also: J/ApJ/600/L99 : Colours of z∼6 galaxies in GOODS (Dickinson+, 2004) http://www.stsci.edu/ftp/science/goods : GOODS HomePage Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [GDS] 5- 23 A19 --- GDS GOODS South name, based on the GOODS v1.0 astrometry, JHHMMSS.ss+DDMMSS.s 25- 29 F5.2 mag zmag ? z magnitude in AB system 31- 35 F5.2 mag i-z ? i-z colour index in AB system 37- 41 F5.3 --- zspec ? Spectroscopic redshift 43- 46 A4 --- Class Classification (1) 48 A1 --- Qual [ABCX] Quality flag (2) 50- 87 A38 --- Comm Comments related to the observation (3) 89- 90 I2 --- Cat Category of the observation (4)
Note (1): Groups the objects for which emission line(s) (em.), absorption-line(s) (abs.) or both (comp.) are detected in the spectrum. The classification has been guided by the observed continuum level and slope blueward and redward of the emission/absorption feature, by the broad-band colors and the morphology of the targets. Note (2): Quality flag, indicates the reliability of the redshift determination. A = solid redshift determination (150 objects) B = likely redshift determination (57 objects) C = tentative redshift determination (27 objects) X = an inconclusive spectrum or three cases in which no extraction was possible (69 objects) Note (3): The column contains additional information relevant to the particular observation. The most common ones summarize the identification of the principal lines, the inclination of an emission line due to internal kinematics, the weakness of the signal ("faint"), the low S/N of the extracted spectrum ("noisy"), the 20% light radius ("Flux-radius" in ACS pixels) for objects classified as stars, etc. Note (4): Category (described in Sect. 2) is numbered as follows: 1 = primary catalog 2 = secondary catalog 3 = photometric redshift sample 4 = i775-dropout and V606-dropout 5 = miscellaneous objects -1 = the serendipitously identified sources
Acknowledgements: Vanzella Eros, vanzella(at)ts.astro.it
(End) Vanzella Eros [Trieste Astron. Obs.], Patricia Vannier [CDS] 28-Dec-2004
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

catalogue service

© UDS/CNRS

Contact