J/ApJS/256/9 Euclid preparation. XIV. C3R2 survey DR3 (Stanford+, 2021)
Euclid preparation.
XIV. The Complete Calibration of the Color-Redshift Relation (C3R2) survey:
data release 3.
Stanford S.A., Masters D., Darvish B., Stern D., Cohen J.G., Capak P.,
Hernitschek N., Davidzon I., Rhodes J., Sanders D.B., Mobasher B.,
Castander F.J., Paltani S., Aghanim N., Amara A., Auricchio N.,
Balestra A., Bender R., Bodendorf C., Bonino D., Branchini E.,
Brinchmann J., Capobianco V., Carbone C., Carretero J., Casas R.,
Castellano M., Cavuoti S., Cimatti A., Cledassou R., Conselice C.J.,
Corcione L., Costille A., Cropper M., Degaudenzi H., Douspis M., Dubath F.,
Dusini S., Fosalba P., Frailis M., Franceschi E., Franzetti P., Fumana M.,
Garilli B., Giocoli C., Grupp F., Haugan S.V.H., Hoekstra H., Holmes W.,
Hormuth F., Hudelot P., Jahnke K., Kiessling A., Kilbinger M., Kitching T.,
Kubik B., Kummel M., Kunz M., Kurki-Suonio H., Laureijs R., Ligori S.,
Lilje P.B., Lloro I., Maiorano E., Marggraf O., Markovic K., Massey R.,
Meneghetti M., Meylan G., Moscardini L., Niemi S.M., Padilla C., Pasian F.,
Pedersen K., Pettorino V., Pires S., Poncet M., Popa L., Pozzetti L.,
Raison F., Roncarelli M., Rossetti E., Saglia R., Scaramella R.,
Schneider P., Secroun A., Seidel G., Serrano S., Sirignano C., Sirri G.,
Taylor A.N., Teplitz H.I., Tereno I., Toledo-Moreo R., Valentijn E.A.,
Valenziano L., Verdoes Kleijn G.A., Wang Y., Zamorani G., Zoubian J.,
Brescia M., Congedo G., Conversi L., Copin Y., Kermiche S., Kohley R.,
Medinaceli E., Mei S., Moresco M., Morin B., Munari E., Polenta G.,
Sureau F., Tallada Crespi P., Vassallo T., Zacchei A., Andreon S.,
Aussel H., Baccigalupi C., Balaguera-Antolinez A., Baldi M., Bardelli S.,
Biviano A., Borsato E., Bozzo E., Burigana C., Cabanac R., Camera S.,
Cappi A., Carvalho C.S., Casas S., Castignani G., Colodro-Conde C.,
Coupon J., Courtois H.M., Cuby J.-G., Da Silva A., De La Torre S.,
Di Ferdinando D., Duncan C.A.J., Dupac X., Fabricius M., Farina M.,
Farrens S., Ferreira P.G., Finelli F., Flose-Reimberg P., Fotopoulou S.,
Galeotta S., Ganga K., Gillard W., Gozaliasl G., Gracia-Carpio J.,
Keihanen E., Kirkpatrick C.C., Lindholm V., Mainetti G., Maino D.,
Martinet N., Marulli F., Maturi M., Maurogordato S., Metcalf R.B.,
Nakajima R., Neissner C., Nightingale J.W., Nucita A.A., Patrizii L.,
Potter D., Renzi A., Riccio G., Romelli E., Sanchez A.G., Sapone D.,
Schirmer M., Schultheis M., Scottez V., Stanco L., Tenti M., Teyssier R.,
Torradeflot F., Valiviita J., Viel M., Whittaker L., Zucca E.
<Astrophys. J. Suppl. Ser., 256, 9-9 (2021)>
=2021ApJS..256....9S 2021ApJS..256....9S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, spectra; Spectra, infrared; Optical; Redshifts;
Photometry, RI; Surveys
Keywords: Galaxy spectroscopy
Abstract:
The Complete Calibration of the Color-Redshift Relation (C3R2) survey
is obtaining spectroscopic redshifts in order to map the relation
between galaxy color and redshift to a depth of i∼24.5 (AB). The
primary goal is to enable sufficiently accurate photometric redshifts
for Stage IV dark energy projects, particularly Euclid and the Nancy
Grace Roman Space Telescope (Roman), which are designed to constrain
cosmological parameters through weak lensing. We present 676 new
high-confidence spectroscopic redshifts obtained by the C3R2 survey in
the 2017B-2019B semesters using the DEIMOS, LRIS, and MOSFIRE
multiobject spectrographs on the Keck telescopes. Combined with the
4454 redshifts previously published by this project, the C3R2 survey
has now obtained and published 5130 high-quality galaxy spectra and
redshifts. If we restrict consideration to only the 0.2<zp<2.6 range
of interest for the Euclid cosmological goals, then with the current
data release, C3R2 has increased the spectroscopic redshift coverage
of the Euclid color space from 51% (as reported by
Masters+ 2017, J/ApJ/841/111) to the current 91%. Once completed and
combined with extensive data collected by other spectroscopic surveys,
C3R2 should provide the spectroscopic calibration set needed to enable
photometric redshifts to meet the cosmology requirements for Euclid,
and make significant headway toward solving the problem for Roman.
Description:
The observations were carried out at the Keck Observatory located on
Maunakea in Hawaii. Both of the two 10m telescopes were used, as the
Low Resolution Imaging Spectrometer (LRIS) and Multi-Object
Spectrometer For Infra-Red Exploration (MOSFIRE) are located on KeckI
and the DEep Imaging Multi-Object Spectrograph (DEIMOS) on KeckII.
The 19 observing nights span 2017 Dec 11 to 2020 Oct 19.
Observations for DR3 were carried out essentially in the same manner
as described in M17 (Masters+ 2017, J/ApJ/841/111) and M19
(Masters+ 2019, J/ApJ/877/81) for the previous data releases.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 175 676 C3R2 DR3 spectroscopic redshifts
sp/* . 1137 1D and 2D individual spectra in FITS format
--------------------------------------------------------------------------------
Description of the files:
DR3.zip is a zip file of the 1137 spectra in FITS format.
See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
II/286 : VIRMOS deep imaging survey. VVDS-F02 catalog (VIRMOS team+, 2008)
II/317 : The CFHTLS Survey (T0007 release) (Hudelot+ 2012)
II/347 : KiDS-ESO-DR3 multi-band source catalog (de Jong+, 2017)
J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)
J/ApJ/769/80 : Spitzer/IRAC observations of five deep fields (Ashby+, 2013)
J/ApJ/795/165 : Line ratios in z∼2-3 gal. from KBSS-MOSFIRE (Steidel+, 2014)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/ApJ/841/111 : C3R2 survey: high-conf. redshifts from DR1 (Masters+, 2017)
J/ApJ/877/81 : The C3R2 survey: DR2 new sp. redshifts (Masters+, 2019)
J/A+A/642/A192 : C3R2-KMOS zsp & galaxy physical data (Euclid Coll., 2020)
http://koa.ipac.caltech.edu/Datasets/C3R2/ : KOA C3R2 home page
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Field Field (COSMOS, COSMOS-S12B, VVDS, EGS,
"ser_COSMOS", "ser_VVDS" or "serendip") (1)
13- 18 I6 --- ID [686/963558]? Identifier within Field (1)
20- 21 I2 h RAh Hour of Right Ascension (J2000)
23- 24 I2 min RAm Minute of Right Ascension (J2000)
26- 30 F5.2 s RAs Second of Right Ascension (J2000)
32 A1 --- DE- Sign of the Declination (J2000)
33- 34 I2 deg DEd Degree of Declination (J2000)
36- 37 I2 arcmin DEm Arcminute of Declination (J2000)
39- 42 F4.1 arcsec DEs Arcsecond of Declination (J2000)
44- 61 A18 --- Mask Mask name
63- 64 I2 --- Slit [0/88] Slit number on mask
66- 71 F6.2 mag imag [18.78/25.57]?=-1 i-band AB magnitude
73- 78 F6.4 --- zspec [0/4.18] Measured spectroscopic redshift
80- 82 F3.1 --- Qual [3/4] Redshift quality flag (2)
84- 90 A7 --- Inst Keck spectrograph (3)
92-136 A45 --- FileName Name of the 1D spectrum file in
subdirectory "sp" (4)
138-175 A38 --- FileName2 A second name of the file in subdirectory
"sp" (red part) for 5 galaxies;
column added by CDS
--------------------------------------------------------------------------------
Note (1): All 18 serendipitous detections are given the identifier "serendip".
Where these correspond to sources in existing photometric catalogs we
use the catalog ID prepended by "ser" (48 occurrences).
True serendipitous sources do not have values in the magnitude column.
The catalog contains a small number of known duplicate observations.
Note (2): Quality flag as in Masters+ (2017, J/ApJ/841/111) as follows:
4.0 = certain;
3.5 = very high confidence but based on a single line detection;
3.0 = high confidence.
Note (3): Instrument as follows:
DEIMOS = the DEep Imaging Multi-Object Spectrograph
on Keck II (5000Å-1um, R∼3000; 410 occurrences)
MOSFIRE = the Multi-Object Spectrometer For Infra-Red Exploration
on Keck I (H-band, R∼3000; 175 occurrences)
LRIS = the Low Resolution Imaging Spectrometer
on Keck I (∼3200Å-1um, 300<R<5000; 91 occurrences)
Note (4): Sources with NULL value in "FileName" field have not yet been
delivered to the Keck Observatory Archive (KOA). This includes the
serendipitous sources.
--------------------------------------------------------------------------------
History:
From electronic version of the journal for Table 4.
Spectra sent by the author.
Acknowledgements:
Adam Stanford [stanford at physics.ucdavis.edu]
References:
EUCLID Col. Paper II. 2019MNRAS.484.5509E 2019MNRAS.484.5509E
EUCLID Col. Paper III. 2019A&A...627A..23E 2019A&A...627A..23E
EUCLID Col. Paper V. 2019A&A...631A..85E 2019A&A...631A..85E
EUCLID Col. Paper VI. 2020A&A...635A.139E 2020A&A...635A.139E
EUCLID Col. Paper VII. 2020A&A...642A.191E 2020A&A...642A.191E
EUCLID Col. Paper VIII. 2020A&A...642A.192E 2020A&A...642A.192E Cat. J/A+A/642/A192
EUCLID Col. Paper IX. 2021MNRAS.505.2840E 2021MNRAS.505.2840E
EUCLID Col. Paper X. 2020A&A...644A..31E 2020A&A...644A..31E
EUCLID Col. Paper XI. 2021A&A...647A.117E 2021A&A...647A.117E
Stanford et al. Paper XIV. 2021ApJS..256....9S 2021ApJS..256....9S This catalog
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 28-Oct-2021