J/ApJS/261/12 Deep redshift survey with Keck/DEIMOS sp. (Pharo+, 2022)
The dwarf galaxy population at z∼0.7: a catalog of emission lines and redshifts
from deep Keck observations.
Pharo J., Guo Y., Calvo G.B., Carleton T., Faber S.M., Guhathakurta P.,
Kassin S.A., Koo D.C., Lonergan J., Teppala T., Wang W., Yesuf H.M.,
Bian F., Dave R., Forbes J.C., Keres D., Perez-Gonzalez P., Martin A.,
Puleo A.J., Williams L., Winningham B.
<Astrophys. J. Suppl. Ser., 261, 12 (2022)>
=2022ApJS..261...12P 2022ApJS..261...12P
ADC_Keywords: Galaxies, spectra; Redshifts; Photometry, HST; Equivalent widths
Keywords: Dwarf galaxies ; Emission line galaxies ; Galaxy spectroscopy ;
Catalogs ; Redshift surveys ; Star formation
Abstract:
We present a catalog of spectroscopically measured redshifts over
0<z<2 and emission-line fluxes for 1440 galaxies. The majority (∼65%)
of the galaxies come from the HALO7D survey, with the remainder from
the DEEPwinds program. This catalog includes redshifts for 646 dwarf
galaxies with log(M*/M☉)<9.5. Eight-hundred and ten catalog
galaxies did not have previously published spectroscopic redshifts,
including 454 dwarf galaxies. HALO7D used the DEIMOS spectrograph on
the Keck II telescope to take very deep (up to 32hr exposure, with a
median of ∼7hr) optical spectroscopy in the COSMOS, EGS, GOODS-North,
and GOODS-South CANDELS fields, and in some areas outside CANDELS. We
compare our redshift results to existing spectroscopic and photometric
redshifts in these fields, finding only a 1% rate of discrepancy with
other spectroscopic redshifts. We measure a small increase in median
photometric redshift error (from 1.0% to 1.3%) and catastrophic
outlier rate (from 3.5% to 8%) with decreasing stellar mass. We
obtained successful redshift fits for 75% of massive galaxies, and
demonstrate a similar 70%-75% successful redshift measurement rate in
8.5<log(M*/M☉)<9.5 galaxies, suggesting similar survey
sensitivity in this low-mass range. We describe the redshift, mass,
and color-magnitude distributions of the catalog galaxies, finding
HALO7D galaxies representative of CANDELS galaxies up to i-band
magnitudes of 25.
Description:
The data used in this paper are comprised of the deep optical spectra
of ∼2400 galaxies observed with Keck/DEIMOS. The majority of the
spectra come from the Halo Assembly in Lambda-CDM: Observations in
7 Dimensions (HALO7D) program (PI: Guhathakurta;
Cunningham+ 2019ApJ...876..124C 2019ApJ...876..124C).
Additional programs expand the sample to include GOODS-South,
including DEEPwinds (PI: S. Faber), an 8hr survey yielding ∼130
low-mass (108M☉<M*<109M☉) galaxies with F160W
AB mag<26.5, and HALO7D-GOODS-S (PI: Kirby), yielding ∼100. The total
observations comprise a sample of 2444 target galaxies, including
1255 low-mass galaxies across four CANDELS fields, as well as
1189 more massive galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 253 2290 Redshift catalog
table4.dat 303 2290 Emission line flux catalog
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See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
II/318 : GOODS Source Catalogs release r2.0z (Giavalisco+ 2008)
J/AJ/127/3121 : TKRS catalog of GOODS-North Field (Wirth+, 2004)
J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)
J/ApJ/706/599 : Hα and UV SFR in the local volume (Lee+, 2009)
J/ApJS/193/13 : Spitzer/IRAC sources in the EGS I. SEDs (Barro+, 2011)
J/ApJS/193/30 : UV-to-FIR analysis of sources in the EGS. II. (Barro+, 2011)
J/ApJS/193/14 : DEEP3 Galaxy Redshift Survey: GOODS-N field (Cooper+, 2011)
J/ApJS/203/24 : Structural param. of CANDELS galaxies (van der Wel+, 2012)
J/ApJ/744/44 : Hα and UV fluxes in nearby galaxies (Weisz+, 2012)
J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)
J/ApJS/206/8 : COSMOS/UltraVISTA Ks-selected catalogs v4.1 (Muzzin+, 2013)
J/ApJS/214/24 : 3D-HST+CANDELS catalog (Skelton+, 2014)
J/ApJ/801/97 : GOODS-S & UDS stellar masses from CANDELS (Santini+, 2015)
J/ApJ/830/51 : FourStar galaxy evolution (ZFOURGE) (Straatman+, 2016)
J/A+A/608/A2 : MUSE Hubble Ultra Deep Field Survey. II. (Inami+, 2017)
J/ApJ/844/171 : Lyα profile in 43 Green Pea galaxies (Yang+, 2017)
J/ApJS/228/7 : Multi-wavelength data in CANDELS COSMOS (Nayyeri+, 2017)
J/ApJS/229/32 : CANDELS: multiwavelength cat. in the EGS (Stefanon+, 2017)
J/MNRAS/478/4293 : 0.1<z<0.8 gal. gas-phase metallicity grad. (Carton+, 2018)
J/A+A/624/A141 : MUSE-Wide Survey DR1 catalog (Urrutia+, 2019)
J/ApJ/888/79 : Emission-line galaxies from the FIGS survey (Pharo+, 2020)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- ID Identifier
18- 23 F6.3 --- zH7 [0.075/1.52]?=-1 Redshift from HALO7D
spectrum
25 I1 --- q_zH7 [0/3] Quality flag on zH7 (3=secure) (1)
27 I1 --- zELC [0/7] Emission line count for the
redshift catalog
29 I1 --- ALC [0/1] Absorption line count
31- 80 A50 --- zLines Detected line identifiers for the
redsfhit catalog
82- 97 A16 --- Field Abbreviated CANDELS field identifier
99-110 A12 --- HALO7D HALO7D survey identifier
112-121 A10 --- CANDELS CANDELS catalog identifier
123-134 A12 --- Other Other identifier (or "-99.0")
136-145 F10.6 deg RAdeg [52.9/215.5] Right Ascension (J2000)
147-156 F10.6 deg DEdeg [-28/62.4] Declination (J2000)
158-159 I2 --- Star [-1] Source tagged as a star
(always "-1") (2)
161-167 F7.3 --- zph [0/6.25]?=-99 Photometric derived redshift
(3)
169-176 F8.4 --- zsp [0.004/3.75]?=-99 Spectroscopic derived
redshift (3)
178-184 F7.3 [Msun] logM [0/13.15]?=-99 Log stellar mass from SED
fitting
186-195 F10.6 Msun/yr SFR [-26.2/3.3]?=-99 Star formation rate from
SED fitting
197-202 F6.2 h Exp [0.7/156.5] Total HALO7D exposure time
204-211 F8.4 mag F606Wmag [14.7/28.1]?=-99 HST F606W band apparent AB
magnitude
213-220 F8.4 mag F814Wmag [14.2/28]?=-99 HST F814W band apparent AB
magnitude
222-229 F8.4 mag F160Wmag [14.1/26.8]?=-99 HST/WFC3 F160W (H-band)
apparent AB magnitude
231-237 F7.3 mag E(B-V) [-49.5/0.76]?=-99 The (B-V) color excess (4)
239-245 F7.3 --- U-V [-0.9/3]?=-99 The (U-V) color index (4)
247-253 F7.3 --- V-J [-3/3.4]?=-99 The (V-J) color index (4)
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Note (1): See Table 2 for full details.
3 = Secure detection (626 occurrences);
2 = Good detection (380 occurrences);
1 = Uncertain detection (426 occurrences);
0 = No fit (858 occurrences).
Note (2): Either in matching catalogs or in our visual inspections
of the spectra.
Note (3): From matched catalogs (Dahlen+ 2013ApJ...775...93D 2013ApJ...775...93D and
Muzzin+ 2013, J/ApJS/206/8 and Barro+ 2019ApJS..243...22B 2019ApJS..243...22B).
Note (4): from Kocevski+ 2017ApJ...846..112K 2017ApJ...846..112K
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Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- ID Identifier
18- 23 F6.3 --- zH7 [0.075/1.52]?=-1 Redshift from HALO7D
spectrum
25 I1 --- ELC [0/7] Emission line count for the emission
line flux catalog (5)
27- 80 A54 --- Lines Detected line identifiers for the emission
line flux catalog
82- 88 F7.2 10-19mW/m2 O2F [0/9946]?=-99 Summed [OII]3727,3729Å
line flux (6)
90- 96 F7.2 10-19mW/m2 e_O2F [0/1237]?=-99 Uncertainty in O2F
98-103 F6.2 --- SNO2F [1/52]?=-99 Signal-to-Noise of O2F
105 A1 --- f_SNO2F [i] i=nan or inf value
107-113 F7.2 0.1nm O2EW [0.3/2644]?=-99 The [OII]3727,3729Å
equivalent width in Å
115 A1 --- f_O2EW [i] i=nan or inf value
117-123 F7.2 10-19mW/m2 HdF [0.5/5249]?=-99 Hδ line flux (6)
125-131 F7.2 10-19mW/m2 e_HdF [0.5/1307]?=-99 Uncertainty in HdF
133-138 F6.2 --- SNHdF [1/28]?=-99 Signal-to-Noise of HdF
140-145 F6.2 0.1nm HdEW [0.1/696]?=-99 Hδ equivalent width
in Å
147-153 F7.2 10-19mW/m2 HgF [1.4/1517]?=-99 Hγ line flux (6)
155-160 F6.2 10-19mW/m2 e_HgF [0.2/160]?=-99 Uncertainty in HgF
162-167 F6.2 --- SNHgF [1/37]?=-99 Signal-to-Noise of HgF
169-175 F7.2 0.1nm HgEW [0.1/1063]?=-99 Hγ equivalent
width in Å
177-183 F7.2 10-19mW/m2 HbF [1.8/4447]?=-99 Hβ line flux (6)
185-190 F6.2 10-19mW/m2 e_HbF [0.4/257]?=-99 Uncertainty in HbF
192-197 F6.2 --- SNHbF [1/38]?=-99 Signal-to-Noise of HbF
199-205 F7.2 0.1nm HbEW [0.1/1327]?=-99 Hβ equivalent width
in Å
207-213 F7.2 10-19mW/m2 O3-59F [0/3328]?=-99 The [OIII]4959Å line
flux (6)
215-220 F6.2 10-19mW/m2 e_O3-59F [0/250]?=-99 Uncertainty in O3-59F
222-227 F6.2 --- SNO3-59F [0/33]?=-99 Signal-to-Noise of O3-59F
229 A1 --- f_SNO3-59F [i] i=nan or inf value
231-237 F7.2 0.1nm O3-59EW [0.04/4961]?=-99 The [OIII]5007Å
equivalent width in Å
239 A1 --- f_O3-59EW [i] i=nan or inf value
241-247 F7.2 10-19mW/m2 O3-07F [0/9984]?=-99 The [OIII]5007Å line
flux (6)
249-254 F6.2 10-19mW/m2 e_O3-07F [0/748]?=-99 Uncertainty in O3-07F
256-261 F6.2 --- SNO3-07F [1.2/33]?=-99 Signal-to-Noise of O3-07F
263 A1 --- f_SNO3-07F [i] i=nan or inf value
265-272 F8.2 0.1nm O3-07EW [0.1/14883]?=-99 The [OIII]5007Å
equivalent width in Å
274 A1 --- f_O3-07EW [i] i=nan or inf value
276-282 F7.2 10-19mW/m2 HaF [13/8420]?=-99 Hα line flux (6)
284-289 F6.2 10-19mW/m2 e_HaF [4/490]?=-99 Uncertainty in HaF
291-296 F6.2 --- SNHaF [1/25]?=-99 Signal-to-Noise of HaF
298-303 F6.2 0.1nm HaEW [0.46/271]?=-99 Hα equivalent
width in Å
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Note (5): The ELC may differ from the counts in the redshift catalog,
as fainter lines are included.
Note (6): The flux units are 10-19erg/s/cm2
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 21-Sep-2022