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 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 2014ApJ...795L..20Y) cluster at
zspec=2.095 (in COSMOS field) and IRC 0218 cluster
(Papovich+ 2010ApJ...716.1503P 2010ApJ...716.1503P; Tanaka+ 2010ApJ...716L.152T 2010ApJ...716L.152T;
Tran+ 2015ApJ...811...28T 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/* . 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)
http://zfire.swinburne.edu.au/ : 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 2014ApJ...795L..20Y) or
UDS (Tran+ 2015ApJ...811...28T 2015ApJ...811...28T) fields.
Note (4): AGNs are flagged following Cowley+ (2016MNRAS.457..629C 2016MNRAS.457..629C) and/or
Coil+ (2015ApJ...801...35C 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
--------------------------------------------------------------------------------
History:
Downloaded from http://zfire.swinburne.edu.au/data.html (02-Jun-2017)
If you have any additional questions please email:
tnanayak [at] astro.swin.edu.au
(End) Emmanuelle Perret [CDS] 02-Jun-2017