Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/653/1004   Galaxies at 1.4≲z≲3.0 in GOODS-North Field    (Reddy+, 2006)

A spectroscopic survey of redshift 1.4≲z≲3.0 galaxies in the GOODS-North Field: survey description, catalogs, and properties. Reddy N.A., Steidel C.C., Erb D.K., Shapley A.E., Pettini M. <Astrophys. J., 653, 1004-1026 (2006)> =2006ApJ...653.1004R
ADC_Keywords: Surveys ; Redshifts ; Galaxies, photometry ; Photometry, infrared Keywords: cosmology: observations - galaxies: active - galaxies: evolution - galaxies: high-redshift - galaxies: starburst - galaxies: stellar content Abstract: We present the results of a spectroscopic survey with LRIS-B on Keck of more than 280 star-forming galaxies and AGNs at redshifts 1.4~<z~<3.0 in the GOODS-N field. Candidates are selected by their UnGR colors using the "BM/BX" criteria to target redshift 1.4~<z~<2.5 galaxies and the LBG criteria to target redshift z∼3 galaxies; combined these samples account for ∼25%-30% of the R and Ks band counts to R=25.5 and Ks(AB)=24.4, respectively. The 212 BM/BX galaxies and 74 LBGs constitute the largest spectroscopic sample of galaxies at z>1.4 in GOODS-N. Extensive multiwavelength data allow us to investigate the stellar populations, stellar masses, bolometric luminosities (Lbol), and extinction z∼2 of galaxies. Deep Chandra and Spitzer data indicate that the sample includes galaxies with a wide range in Lbol (∼1010 to >1012L) and 4 orders of magnitude in dust obscuration (Lbol/LUV). Description: The imaging, photometry, color selection, and spectroscopic observations of galaxies in the fields of our survey are described in several other papers published by our group (Steidel et al. 2003, Cat. J/ApJ/592/728, 2004ApJ...604..534S; Adelberger et al., 2004ApJ...607..226A; Reddy et al., 2005ApJ...633..748R). Specific details regarding the GOODS-N optical imaging are presented in Reddy et al. (2005ApJ...633..748R). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 160 388 GOODS-N UnGR galaxies with spectroscopic redshifts table3.dat 71 254 Stellar Population Parameters
See also: J/ApJ/592/728 : Lyman break galaxies at redshift z∼3 (Steidel+, 2003) J/AJ/127/3137 : Hawaii redshifts in the ACS-GOODS region (Cowie+, 2004) J/AJ/127/3121 : TKRS catalog of GOODS-North Field (Wirth+, 2004) J/ApJ/653/1027 : TKRS/GOODS-N Field galaxies (Weiner+, 2006) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name Name (G1) 12- 13 I2 h RAh Right ascension (J2000.0) 15- 16 I2 min RAm Right ascension (J2000.0) 18- 22 F5.2 s RAs Right ascension (J2000.0) 24 A1 --- DE- Declination sign (J2000.0) 25- 26 I2 deg DEd Declination (J2000.0) 28- 29 I2 arcmin DEm Declination (J2000.0) 31- 34 F4.1 arcsec DEs Declination (J2000.0) 36 A1 --- u_zem [:] Uncertainty flag on zem 37- 41 F5.3 --- zem ? Emission redshift (2) 43 A1 --- u_zabs [:] Uncertainty flag on zabs 44- 48 F5.3 --- zabs ? Absorption redshift (3) 50- 53 A4 --- Mcl Morphological class (4) 55- 59 F5.2 mag Rmag ? R magnitude in AB unit (G2) 61- 65 F5.2 mag G-R ? G-R colour index (G2) 66 A1 --- l_Un-G Limit flag, upper limits given for galaxies undetected in Un 67- 71 F5.2 mag Un-G ? Un-G colour index (G2) 73 A1 --- l_Jmag Limit flag on Jmag 74- 78 F5.2 mag Jmag ? J magnitude (5) 80 A1 --- l_Ksmag Limit flag on Ksmag 81- 85 F5.2 mag Ksmag ? Ks magnitude (5) 87- 91 F5.2 mag m3.6 ? magnitude at 3.6um 93- 96 F4.2 mag e_m3.6 ? rms uncertainty on m3.6 98-102 F5.2 mag m4.5 ? magnitude at 4.5um 104-107 F4.2 mag e_m4.5 ? rms uncertainty on m4.5 109-113 F5.2 mag m5.8 ? magnitude at 5.8um 115-118 F4.2 mag e_m5.8 ? rms uncertainty on m5.8 120-124 F5.2 mag m8.0 ? magnitude at 8.0um 126-129 F4.2 mag e_m8.0 ? rms uncertainty on m8.0 131-135 F5.1 uJy F24 ? flux at 24um 137-140 F4.1 uJy e_F24 ? rms uncertainty on F24 142-160 A19 --- Notes Notes (6)
Note (2): Emission-line redshift. An entry with a colon indicates that the redshift is uncertain. A blank entry indicates that an emission-line redshift could not be measured. Note (3): Absorption-line redshift. An entry with a colon indicates that the redshift is uncertain. A blank entry indicates that an absorption-line redshift could not be measured. Note (4): Source type, either galaxy (GAL), AGN, QSO, or STAR. The distinction between QSO and AGN classification is based on the line widths, as described in Steidel et al. (2002ApJ...576..653S), where an object is classified as a QSO if it has any emission line with FWHM >2000km/s. AGNs identified using other means (X-ray or mid-IR emission) are discussed in Sect. 6.2. Note (5): A blank entry indicates that the object did not lie in the region with near-IR imaging. Note (6): Galaxies in common with the LBG survey in the HDF-N are indicated by their names (S03-XXX) as given in Steidel et al. (2003, Cat. J/ApJ/592/728). Galaxies with X-ray counterparts within are indicated by their names (B03-XXX) in the spectroscopic follow-up to the Chandra 2 Ms survey by Barger et al. (2003, Cat. J/AJ/126/632). Galaxies satisfying the distant red galaxy (DRG) criteria of Franx et al. (2003ApJ...587L..79F) are indicated by DRG.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name Name (G1) (1) 12- 16 F5.3 --- z Redshift 18- 21 F4.2 mag E(B-V)i Reddening E(B-V) calculated with constant formation 23- 26 I4 Myr Age.i Age calculated with constant formation 28- 31 I4 solMass/yr SFR.i Stellar Formation Rate calculated with constant formation 33- 38 F6.3 10+10solMass Mass.i Stellar mass calculated with constant formation 40- 43 I4 Myr tau Best-fit star formation history decay timescale (2) 45- 49 F5.2 mag E(B-V)tau Reddening E(B-V) calculated with tau 51- 54 I4 Myr Age.tau Age calculated with tau 56- 59 I4 solMass/yr SFR.tau Stellar Formation Rate calculated with tau 61- 66 F6.3 10+10solMass Mass.tau Stellar mass calculated with tau 68- 71 A4 --- Note [IRAC Ks] Notes (3)
Note (1): We did not fit the stellar populations of galaxies that had no data longward of R band, had uncertain redshifts, or are identified as AGN/QSO from their optical spectra. We also do not present SED parameters for those galaxies with optical and IRAC photometry inconsistent with a simple stellar population (these sources had large χ2>10) or those sources with 8 or 24um excesses. Note (2): In some cases, a model with constant star formation (infinity) provided the best fit. Note (3): Objects with large Ks band residuals are indicated (i.e., those sources whose Ks band measurement lies more than 3σ away from the best-fit stellar population). MD31 is the only directly detected X-ray source that shows no optical signatures of an AGN, has a relatively faint 24um flux, and has photometry that is consistent with a stellar population. The IRAC photometry for BX1267 may suffer from a deblending problem, and these (IRAC) data were not used in the SED fit.
Global notes: Note (G1): Nomenclature note: Names S03-XXX are identified as SAS-LBG HDF-XXX in Simbad. All other objects are identified as [RSE2006] Name in Simbad Note (G2): Filters are: Un = identitical to SDSS u' filter R = bandpass centered at 683nm, FWHM = 125nm G = similar to SDSS g' (same effective wavelength but slightly narrower)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 31-Jul-2008
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