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J/ApJ/828/21            ZFIRE v1.0 data release            (Nanayakkara+, 2016)

ZFIRE: a KECK/MOSFIRE spectroscopic survey of galaxies in rich environments at z∼2. Nanayakkara T., Glazebrook K., Kacprzak G.G., Yuan T., Tran K.-V., Spitler L., Kewley L., Straatman C., Cowley M., Fisher D., Labbe I., Tomczak A., Allen R., Alcorn L. <Astrophys. J., 828, 21-21 (2016)> =2016ApJ...828...21N (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, IR ; Spectra, infrared ; Redshifts Surveys Keywords: catalogs; galaxies: clusters: general; galaxies: distances and redshifts; galaxies: general; galaxies: high-redshift; surveys Abstract: We present an overview and the first data release of ZFIRE, a spectroscopic redshift survey of star-forming galaxies that utilizes the MOSFIRE instrument on Keck-I to study galaxy properties in rich environments at 1.5<z<2.5. ZFIRE measures accurate spectroscopic redshifts and basic galaxy properties derived from multiple emission lines. The galaxies are selected from a stellar mass limited sample based on deep near infrared imaging (KAB<25) and precise photometric redshifts from the ZFOURGE and UKIDSS surveys as well as grism redshifts from 3DHST. Between 2013 and 2015, ZFIRE has observed the COSMOS and UDS legacy fields over 13 nights and has obtained 211 galaxy redshifts over 1.57<z<2.66 from a combination of nebular emission lines (such as Hα, [NII], Hβ, [OII], [OIII], and [SII]) observed at 1-2µm. Based on our medium-band near infrared photometry, we are able to spectrophotometrically flux calibrate our spectra to ∼10% accuracy. ZFIRE reaches 5σ emission line flux limits of ∼3x10-18erg/s/cm2 with a resolving power of R=3500 and reaches masses down to ∼109M. We confirm that the primary input survey, ZFOURGE, has produced photometric redshifts for star-forming galaxies (including highly attenuated ones) accurate to Δz/(1+zspec)=0.015 with 0.7% outliers. We measure a slight redshift bias of <0.001, and we note that the redshift bias tends to be larger at higher masses. We also examine the role of redshift on the derivation of rest-frame colors and stellar population parameters from SED fitting techniques. The ZFIRE survey extends spectroscopically confirmed z∼2 samples across a richer range of environments, here we make available the first public release of the data for use by the community. Description: The Keck/MOSFIRE operates from 0.97-2.41um (i.e., corresponding to atmospheric YJHK bands, one band at a time) and provides a 6.1'x6.1' field of view with a resolving power of R∼3500. The galaxies presented in this paper consist of observations of two cluster fields: the Yuan+ (2014ApJ...795L..20Y) cluster at zspec=2.095 (in COSMOS field) and IRC 0218 cluster (Papovich+ 2010ApJ...716.1503P; Tanaka+ 2010ApJ...716L.152T; Tran+ 2015ApJ...811...28T) at zspec=1.62 (in UDS field). Between 2013 and 2016 15 MOSFIRE nights were awarded to the ZFIRE program by a combination of Swinburne University (Program IDs- 2013A_W163M, 2013B_W160M, 2014A_W168M, 2015A_W193M, 2015B_W180M), Australian National University (Program IDs- 2013B_Z295M, 2014A_Z225M, 2015A_Z236M, 2015B_Z236M), and NASA (Program IDs- 2013A_N105M, 2014A_N121M) telescope time allocation committees. Data for 13 nights observed between 2013 and 2015 are released with this paper. Objects: ----------------------------------------------------------------------- RA (ICRS) DE Designation(s) ----------------------------------------------------------------------- 10 00 18.38 +02 14 58.0 cluster z2.095 = [SLG2012] Galaxy Cluster 02 18 21.3 -05 10 27 IRC 0218 cluster = ClG J0218-0510 ----------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file zfirecos.dat 221 233 Final ZFIRE v1.0 data release for COSMOS (master table) zfireuds.dat 221 91 Final ZFIRE v1.0 data release for UDS (master table) spectra/* 0 2 All 1D spectra in FITS format in subdirectories uds (206 files) and cosmos (all masks: 330 files) spcos.dat 404 212 List of individual FITS file names for COSMOS; table added by CDS spuds.dat 199 90 List of individual FITS file names for UDS; table added by CDS
See also: II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012) II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007) VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003) J/ApJ/830/51 : FourStar galaxy evolution survey (ZFOURGE) (Straatman+, 2016) J/AJ/150/153 : Team Keck Redshift Survey 2 (TKRS2) (Wirth+, 2015) J/ApJ/812/114 : Grism Lens-Amplified Survey from Space. I. (Treu+, 2015) J/AJ/150/31 : Photometry & redshifts of gal. in the UDF (Rafelski+, 2015) J/ApJ/795/165 : Line ratios in z∼2-3 gal. from KBSS-MOSFIRE (Steidel+, 2014) J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014) J/A+A/562/A23 : VIMOS Public Extragalactic Survey DR1 (Garilli+, 2014) J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013) J/ApJ/769/80 : Spitzer/IRAC observations of five deep fields (Ashby+, 2013) J/A+A/549/A63 : GMASS photometry (Kurk+, 2013) J/ApJS/203/24 : Structural param. of galaxies in CANDELS (van der Wel+, 2012) J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012) J/ApJ/750/93 : Near-IR observations of XMM-LSS J02182-05102 (Papovich+, 2012) J/ApJ/735/86 : NEWFIRM MBS: photometric catalogs (Whitaker+, 2011) J/ApJ/734/68 : High redshift galaxy clusters in deep fields (Wen+, 2011) J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007) J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006) J/AJ/127/2455 : Gemini Deep Deep Survey (GDDS) (Abraham+, 2004) J/ApJ/592/728 : Lyman break galaxies at redshift z∼3 (Steidel+, 2003) J/ApJS/139/369 : Chandra Deep Field South. 1 Ms catalog (Giacconi+, 2002) : ZFIRE home page Byte-by-byte Description of file: zfire*.dat
Bytes Format Units Label Explanations
1- 5 I5 --- Name [66/46922] Unique ZFIRE identifier 6 A1 --- m_Name [bc ] b,c: other measurements on the object 8- 18 F11.7 deg RAdeg Right ascension (J2000) 20- 29 F10.7 deg DEdeg Declination (J2000) 31- 36 A6 --- Field Field ("COSMOS" or "UDS") 38- 50 F13.10 mag Ksmag [18.9/25.4]? Ks-band AB magnitude from ZFOURGE (1) 52- 67 F16.14 mag e_Ksmag [0.002/1.1]? Ksmag uncertainty 69- 76 F8.6 --- zsp [0.5/3.6]? ZFIRE spectroscopic redshift 78- 85 E8.6 --- e_zsp [6e-06/0.0005]? zsp uncertainty 87 I1 --- q_zsp [1/3] ZFIRE redshift quality flag (2) 89- 93 A5 --- Mm Cluster membership flag (3) 95- 99 F5.2 [Msun] Mass [6.8/11.6]? Stellar mass from FAST 101-105 F5.2 mag Av [0/3.3]? Dust extinction from FAST 107-111 A5 --- AGN AGN flag (4) 113-118 F6.3 10-20W/m2 FHa [0/37]? Emission line Hα flux from ZFIRE spectrum (5) 120-126 F7.3 10-20W/m2 e_FHa [0.03/111]? FHa uncertainty (5)(6) 128-133 F6.3 10-20W/m2 FHalim [0/13]? 1σ upper limit for the Hα flux detection (5) 135-140 F6.3 10-20W/m2 FNII [0/15]? Emission line [NII] flux (6585Å) from ZFIRE spectrum (5) 142-146 F5.3 10-20W/m2 e_FNII [0.02/1]? FNII uncertainty (5)(6) 148-152 F5.3 10-20W/m2 FNIIlim [0/7]? 1σ upper limit for the [NII] flux detection (5) 154-158 F5.3 10-20W/m2 FHb [0/10]? Emission line Hβ flux from ZFIRE spectrum (5) 160-168 F9.3 10-20W/m2 e_FHb [0.02/10789]? FHb uncertainty (5)(6) 170-174 F5.3 10-20W/m2 FHblim [0/8]? 1σ upper limit for the Hβ flux detection (5) 176-181 F6.3 10-20W/m2 FOIII [0/29]? Emission line [OIII] flux (5008Å) from ZFIRE spectrum (5) 183-191 F9.3 10-20W/m2 e_FOIII [0.03/10235]? FOIII uncertainty (5)(6) 193-197 F5.3 10-20W/m2 FOIIIlim [0/3]? 1σ upper limit for the [OIII] flux detection (5) 199-205 F7.3 10-20W/m2 FOII [0.05/247]? Emission line [OII] flux (5) 207-215 F9.3 10-20W/m2 e_FOII [0/65093]? FOII uncertainty (5)(6) 217-221 F5.3 10-20W/m2 FOIIlim [0/3]? 1σ upper limit for the [OII] flux detection (5)
Note (1): The survey selection for this data release was done using the ZFOURGE internal catalogs, and therefore the results presented here onwards could vary slightly from the ZFOURGE public data release (see Straatman+, 2016, J/ApJ/830/51). See section 3.1 and Appendix B for further explanations. Note (2): Quality flag as follows: 1 = These are objects with no line detection with S/N<5. These objects are not included in our final spectroscopic sample. 2 = These are objects with one emission line with S/N>5 and a |zspec-zphot|>0.2. 3 = These are objects with more than one emission line identified with S/N>5 or one emission line identified with S/N>5 with a |zspec-zphot|<0.2. Note (3): True = True objects that are spectroscopically confirmed cluster members in either the COSMOS (Yuan+ 2014ApJ...795L..20Y) or UDS (Tran+ 2015ApJ...811...28T) fields. Note (4): AGNs are flagged following Cowley+ (2016MNRAS.457..629C) and/or Coil+ (2015ApJ...801...35C) selection criteria. Note (5): The nebular emission line fluxes (along with errors and limits) are given in units of 10-17erg/s/cm2. Note (6): The error of the line fluxes are from the integration of the error spectrum within the same limits used for the emission line extraction.
Byte-by-byte Description of file: spcos.dat
Bytes Format Units Label Explanations
1- 64 A64 --- FileName1 "KbandLargeArea" file name in spectra/cosmos subdirectories if any 66-118 A53 --- FileName2 Hband file name in spectra/cosmos subdirectories if any 120-180 A61 --- FileName3 "shallowmask" in K-band file name in spectra/cosmos subdirectories if any 182-231 A50 --- FileName4 "DeepKband" file name in spectra/cosmos subdirectories if any 233-296 A64 --- FileName5 Other file name in spectra/cosmos subdirectories if any 298-350 A53 --- FileName6 Other file name in spectra/cosmos subdirectories if any 352-404 A53 --- FileName7 Other file name in spectra/cosmos subdirectories if any
Byte-by-byte Description of file: spuds.dat
Bytes Format Units Label Explanations
1- 37 A37 --- FileNameJ J-band file name in spectra/uds subdirectories if any 39- 81 A43 --- FileNameH H-band file name in spectra/uds subdirectories if any 83-127 A45 --- FileNameY Y-band file name in spectra/uds subdirectories if any 129-163 A35 --- FileName4 Other file name(s) in spectra/uds subrdirectories if any 165-199 A35 --- FileName5 Other file name(s) in spectra/uds subrdirectories if any
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(End) Emmanuelle Perret [CDS] 02-Jun-2017
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