J/MNRAS/474/4151 WiggleZ Dark Energy Survey final DR (Drinkwater+, 2018)
The WiggleZ Dark Energy Survey:
final data release and the metallicity of UV-luminous galaxies.
Drinkwater M.J., Byrne Z.J., Blake C., Glazebrook K., Brough S.,
Colless M., Couch W., Croton D.J., Croom S.M., Davis T.M., Forster K.,
Gilbank D., Hinton S.R., Jelliffe B., Jurek R.J., Li I.-H., Martin D.C.,
Pimbblet K., Poole G.B., Pracy M., Sharp R., Smillie J., Spolaor M.,
Wisnioski E., Woods D., Wyder T.K., Yee H.K.C.
<Mon. Not. R. Astron. Soc., 474, 4151-4168 (2018)>
=2018MNRAS.474.4151D 2018MNRAS.474.4151D (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Galaxy catalogs ; Redshifts ; Photometry, ultraviolet ;
Photometry, SDSS
Keywords: surveys - galaxies: abundances - galaxies: photometry -
galaxies: starburst - cosmology: observations - ultraviolet: galaxies
Abstract:
The WiggleZ Dark Energy Survey measured the redshifts of over
200000 ultraviolet (UV)-selected (NUV<22.8mag) galaxies on the
Anglo-Australian Telescope. The survey detected the baryon acoustic
oscillation signal in the large-scale distribution of galaxies over
the redshift range 0.2<z<1.0, confirming the acceleration of the
expansion of the Universe and measuring the rate of structure growth
within it. Here, we present the final data release of the survey: a
catalogue of 225415 galaxies and individual files of the galaxy
spectra. We analyse the emission-line properties of these UV-luminous
Lyman-break galaxies by stacking the spectra in bins of luminosity,
redshift, and stellar mass. The most luminous (-25mag<MFUV< -22mag)
galaxies have very broad Hβ emission from active nuclei, as well
as a broad second component to the [OIII] (495.9nm, 500.7nm)
doublet lines that is blueshifted by 100km/s, indicating the
presence of gas outflows in these galaxies. The composite spectra
allow us to detect and measure the temperature-sensitive [OIII]
(436.3nm) line and obtain metallicities using the direct method. The
metallicities of intermediate stellar mass (8.8<log(M*/M☉)<10)
WiggleZ galaxies are consistent with normal emission-line galaxies at
the same masses. In contrast, the metallicities of high stellar mass
(10<log(M*/M☉)<12) WiggleZ galaxies are significantly
lower than for normal emission-line galaxies at the same masses. This
is not an effect of evolution as the metallicities do not vary with
redshift; it is most likely a property specific to the extremely
UV-luminous WiggleZ galaxies.
Description:
The final WiggleZ Dark Energy Survey catalogue contains data for
225415 unique objects. We present the data as a catalogue as well
as individual spectra.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
wigglez.dat 241 225415 The WiggleZ catalogue
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See also:
J/MNRAS/401/1429 : WiggleZ dark energy survey (DR1) (Drinkwater+, 2010)
Byte-by-byte Description of file: wigglez.dat
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Bytes Format Units Label Explanations
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1- 22 A22 --- Name WiggleZ Name, NhhJHHMMSSsss+DDMMSSss (1)
24- 34 F11.7 deg RAdeg Right ascension (J2000)
36- 45 F10.6 deg DEdeg Decliantion 9J2000(
47- 54 F8.5 --- z Redshift
56- 63 F8.5 --- e_z ?=-1 rms uncertainty on z
65 I1 --- q_z Redshift quality flag (2)
67- 71 F5.2 mag FUV ?=- GALEX FUV magnitude
73- 77 F5.2 mag NUV ?=- GALEX NUV magnitude
79- 83 F5.2 mag umag ?=- SDSS u magnitude
85- 89 F5.2 mag gmag ?=- SDSS g magnitude
91- 95 F5.2 mag rmag ?=- SDSS r magnitude
97-101 F5.2 mag imag ?=- SDSS i magnitude
103-107 F5.2 mag zmag ?=- SDSS z magnitude
109-113 F5.2 mag e_FUV ?=- rms uncertainty on FUVmag
115-118 F4.2 mag e_NUV ?=- rms uncertainty on NUVmag
120-124 F5.2 mag e_umag ?=- rms uncertainty on umag
126-129 F4.2 mag e_gmag ?=- rms uncertainty on gmag
131-134 F4.2 mag e_rmag ?=- rms uncertainty on rmag
136-139 F4.2 mag e_imag ?=- rms uncertainty on imag
141-145 F5.2 mag e_zmag ?=- rms uncertainty on zmag
147-152 F6.4 mag E(B-V) ?=- Redenning E(B-V)
154-165 A12 --- Class Class (1)
167-176 A10 "date" Date UT date when the associated spectrum was
observed at the Anglo-Australian Telescope
178-183 F6.2 mag MFUV ?=- Absolute FUX magnitude
185-189 F5.2 Msun Mass ?=- Stellar Mass
191-194 F4.2 Msun e_Mass ?=- rms uncertainty on Mass
196-209 A14 --- SpecFile Spectrum file id
211-241 A31 --- Com Comments
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Note (1): Name as JHHMMSSsss+DDMMSSss. The first letter 'N' describes the target
selection category (see below). This is followed by a two-digit code 'hh'
identifying the survey field by its right ascension in hours. This is
followed by 'J' to signify J2000 equinox coordinates which are encoded in the
remaining digits HHMMSSsss and +DDMMSSss.
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N Class Description:
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G SPARE_GALEX UV variable sources
R WIG_RCS2 RCS2 regions (main)
R WIGRCS2EXT RCS2 regions (extra)
S WIG_SDSS SDSS regions (main)
S WIGSDSSEXT SDSS regions (extra)
X SPARE_RCS2 RCS2 cluster galaxies
Y SPARE_RADIO Radio galaxies
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Note (2): Quality flag as follows:
0 = Unexplained in the paper (5 objects)
1 = No redshift was possible; highly noisy spectra
2 = An uncertain redshift was assigned
3 = A reasonably confident redshift; if based on [OII] alone,
the doublet is resolved or partially resolved.
4 = A redshift that has multiple (obvious) emission lines all in agreement
5 = An excellent redshift with high S/N that may be suitable as a template
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Mar-2021