J/ApJ/966/228 MUSE UDF. V. Mass-metallicities at z∼1-2 (Revalski+, 2024)
The MUSE Ultra Deep Field (MUDF).
V. Characterizing the Mass-Metallicity Relation for Low-mass Galaxies at z∼1-2.
Revalski M., Rafelski M., Henry A., Fossati M., Fumagalli M., Dutta R.,
Pirzkal N., Beckett A., Arrigoni Battaia F., Dayal P., D'Odorico V.,
Lusso E., Nedkova K.V., Prichard L.J., Papovich C., Peroux C.
<Astrophys. J., 966, 228 (2024)>
=2024ApJ...966..228R 2024ApJ...966..228R
ADC_Keywords: Galaxies, spectra; Equivalent widths; Redshifts; Optical
Keywords: Star formation ; Metallicity ; High-redshift galaxies ;
Galaxy environments ; Galaxy evolution ; Galaxy chemical evolution ;
Galaxy abundances
Abstract:
Using more than 100 galaxies in the MUSE Ultra Deep Field with
spectroscopy from the Hubble Space Telescope's (HST) WFC3 and the Very
Large Telescope's Multi Unit Spectroscopic Explorer (MUSE), we extend
the gas-phase mass-metallicity relation (MZR) at z∼1-2 down to stellar
masses of M*∼107.5M☉. The sample reaches 6 times lower in
stellar mass and star formation rate (SFR) than previous HST studies
at these redshifts, and we find that galaxy metallicities decrease to
log(O/H)+12∼7.8±0.1 (15% solar) at log(M*/M☉)∼7.5, without
evidence of a turnover in the shape of the MZR at low masses. We
validate our strong-line metallicities using the direct method for
sources with [OIII]λ4363 and [OIII]λ1666 detections, and
find excellent agreement between the techniques. The
[OIII]λ1666-based metallicities double existing measurements
with a signal-to-noise ratio ≥5 for unlensed sources at z>1,
validating the strong-line calibrations up to z∼2.5. We confirm that
the MZR resides ∼0.3dex lower in metallicity than local galaxies and
is consistent with the fundamental metallicity relation if the
low-mass slope varies with SFR. At lower redshifts (z∼0.5) our sample
reaches ∼0.5dex lower in SFR than current calibrations and we find
enhanced metallicities that are consistent with extrapolating the MZR
to lower SFRs. Finally, we detect only an ∼0.1dex difference in the
metallicities of galaxies in groups versus isolated environments.
These results are based on robust calibrations and reach the lowest
masses and SFRs that are accessible with HST, providing a critical
foundation for studies with the Webb and Roman Space Telescopes.
Description:
The survey design and data reduction for the MUSE observations (ESO
PID 1100.A-0528, PI: M. Fumagalli) are described in
Fossati+ (2019, J/MNRAS/490/1451 ), and consist of 142hr of integral
field unit spectroscopy in the optical (4600-9350Å) with a spectral
resolution of R∼2000-4000. These observations are publicly available,
and calibrated data products can be retrieved from the ESO archive at
doi:10.18727/archive/84.
The observing strategy and custom calibrations for the HST imaging and
grism spectroscopy are detailed extensively in
Revalski+ (2023, J/ApJS/265/40), and we provide a summary here for
completeness. We obtained 90 orbits of WFC3/IR G141 grism spectroscopy
(1.0-1.7um) and F140W imaging in HST Cycle 26 (PID 15637,
PI: M. Rafelski & M. Fumagalli), resulting in ultradeep photometry and
spectroscopy for ∼1500 sources with a spectral resolution of R∼150. We
also utilize F336W photometry from our follow-up program (PID 15968,
PI: M. Fossati), together with archival WFPC2 F702W and F450W imaging
(PID 6631, PI: P. Francis) that provide five-filter photometry of the
field for detailed SED modeling.
In Revalski et al. (2023), we provided the photometric catalog for the
field, and in this work, we describe our spectral fitting procedure
(Section 2.2) and publicly release the spectral emission-line catalog.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
spcat.dat 1650 426 *Spectroscopic catalog (Table 3)
--------------------------------------------------------------------------------
Note on spcat.dat: The individual and total fluxes of closely spaced doublets
are saved in the catalog so the component fluxes can be used when the
lines are resolved in MUSE, and the integrated fluxes can be used when
lines are blended in WFC3.
--------------------------------------------------------------------------------
See also:
J/ApJ/617/240 : Oxygen abundances in GOODS-North (Kobulnicky+, 2004)
J/A+A/462/535 : Low-metallicity HII regions and galaxies (Yin+, 2007)
J/ApJ/725/394 : High-redshift Lyα emitters (Hu+, 2010)
J/ApJ/765/140 : Stacked spectra of SDSS star forming gal. (Andrews+, 2013)
J/A+A/550/A115 : Oxygen abundances and properties of galaxies (Hughes+, 2013)
J/ApJ/795/165 : Line ratios in z∼2-3 gal. from KBSS-MOSFIRE (Steidel+, 2014)
J/ApJS/225/27 : 3D-HST Survey: grism sp. master catalog (Momcheva+, 2016)
J/ApJ/822/42 : z∼3.3 star-forming galaxies NIR spectra (Onodera+, 2016)
J/A+A/608/A8 : MUSE Hubble Ultra Deep Field Survey. VIII (Leclercq+, 2017)
J/MNRAS/474/1873 : Classification of LAMOST DR4 galaxies (Wang+, 2018)
J/MNRAS/490/1451 : MUDF data of galaxy groups at 0.5<z<1.5 (Fossati+, 2019)
J/A+A/624/A141 : MUSE-Wide Survey DR1 catalog (Urrutia+, 2019)
J/ApJ/900/183 : HST NIR grism sp. of strong-lensing clusters (Wang+, 2020)
J/ApJ/919/143 : HST-WFC3/IR grism sp. for CANDELS z∼1-2 gal. (Henry+, 2021)
J/ApJ/923/203 : CLEAR: HST grism obs. of CANDELS gal. (Simons+, 2021)
J/ApJS/269/33 : JWST z=4-10 galaxy mass-metallicities (Nakajima+, 2023)
J/ApJ/959/48 : Metallicities for em. line gal. from HALO7D (Pharo+, 2023)
J/ApJS/265/40 : MUDF III. HST grism spectroscopy & imaging (Revalski+, 2023)
http://archive.stsci.edu/hlsp/mudf : MUSE UDF homepage on MAST
Byte-by-byte Description of file: spcat.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 6 I05 --- objid [334/21102] Object ID
(<[RRF2023] NNNNN> in Simbad) (objid)
8- 14 F7.5 --- z [0.067/5.4] Redshift (redshift)
16- 23 F8.5 --- e_z [0/53.02] z uncertainty (redshift_error)
25- 34 F10.6 deg RAdeg [325.56/325.64] Right ascension (J2000)
(ra_obj)
36- 45 F10.6 deg DEdeg [-44.36/-44.3] Declination (J2000)
(dec_obj)
47- 51 F5.2 mag F140W [16.53/99] F140W AB magnitude (f140w_mag)
53- 58 F6.3 pix Aimg [0.8/29.6] Semimajor axis size
(aimageobj)
60- 65 F6.3 pix Bimg [0.5/16.33] Semiminor axis size
(bimageobj)
67- 73 F7.2 --- SNR [0/2035.5] Flux-weighted signal-to-noise
ratio of lines (snrtotothers)
75- 83 F9.2 --- Chi2 [0.07/491312] Chi2 if spectral fit
(chisq)
85- 90 F6.2 mW/m2 FWHMMUSE [1/220.5] FWHM of lines in MUSE
(fwhm_muse)
92- 99 F8.2 mW/m2 e_FWHMMUSE [0/41193.7] FWHMMUSE uncertainty
(fwhmmuseerror)
101- 107 F7.2 mW/m2 FWHMg141 [17.8/3825.2] FWHM of lines in WFC3
(fwhm_g141)
109- 116 F8.2 mW/m2 e_FWHMg141 [0/52288.3] FWHMg141 uncertainty
(fwhmg141error)
118- 125 F8.5 --- dzLya [-0.006/0.004]?=0 δz for lines
locked to Lya 1216 relative to Ha
(la1216dz)
127- 134 F8.5 --- dzCIV [-0.004/0.005]?=0 δz for lines
locked to CIV 1548 relative to Ha
(c41548dz)
136- 143 F8.5 --- dzHeII [-0.01/0.004]?=0 δz for lines
locked to HeII relative to Ha
(uvlinedz)
145- 152 F8.5 --- dzMgII [-0.013/0.012]?=0 δz for lines
locked to MgII 2796 relative to Ha
(m22796dz)
154- 161 F8.5 --- dzOII [-0.012/0.011]?=0 δz for lines
locked to OII 3727 relative to Ha
(o23727dz)
163- 170 F8.5 --- dzOIII [-0.01/0.004]?=0 δz for lines
locked to OIII 5007 relative to Ha
(o35007dz)
172- 178 F7.5 --- dzSIII [0] δz for lines locked to SIII
relative to Ha (always "0") (s3hedz)
180- 188 E9.3 mW/m2 FLya1216 [0/8.54e-15]?=-1 Integrated Lya 1216Å
flux in erg/s/cm2 (la1216flux)
190- 198 E9.3 mW/m2 e_FLya1216 [0/9.42e-15]?=-1 FLya1216 uncertainty
(la1216error)
200- 208 E9.3 0.1nm EWLya1216 [0/7000]?=-1 Observed Lya 1216Å
equivalent width in Angstroms
(la1216ew_obs) (2)
210 I1 --- f_FLya1216 [0/5] Contamination flag on FLya1216
(la1216contam) (1)
212- 220 E9.3 mW/m2 FLyaWing [/4.12e-16]?=-1 Integrated Lya wing flux
in erg/s/cm2 (lawingflux)
222- 230 E9.3 mW/m2 e_FLyaWing [0/5.64e-15]?=-1 FLyaWing uncertainty
(lawingerror)
232- 240 E9.3 0.1nm EWLyaWing [/507000]?=-1 Observed Lya wing
equivalent width in Angstroms
(lawingew_obs) (2)
242 I1 --- f_FLyaWing [0/5] Flag on FLyaWing (lawingcontam)
(1)
244- 252 E9.3 mW/m2 FLya [/4.55e-15]?=-1 Integrated Lya 1216Å
and wing flux in erg/s/cm2
(la1216wing_flux)
254- 262 E9.3 mW/m2 e_FLya [1.8e-19/5.2e-17]?=-1 FLya uncertainty
(la1216wing_error)
264- 272 E9.3 0.1nm EWLya [/513000]?=-1 Observed Lya 1216Å and
wing equivalent width in Angstroms
(la1216wingewobs) (2)
274 I1 --- f_FLya [0/5] Flag on FLya (la1216wing_contam)
(1)
276- 284 E9.3 mW/m2 FNV1238 [0/9.38e-15]?=-1 Integrated NV 1238Å
flux in erg/s/cm2 (n51238flux)
286- 294 E9.3 mW/m2 e_FNV1238 [0/8.44e-15]?=-1 FNV1238 uncertainty
(n51238error)
296- 304 E9.3 0.1nm EWNV1238 [0/180]?=-1 Observed NV 1238Å
equivalent width in Angstroms
(n51238ew_obs) (2)
306 I1 --- f_FNV1238 [0/5] Flag on FNV1238 (n51238contam)
(1)
308- 316 E9.3 mW/m2 FNV1242 [0/4.69e-15]?=-1 Integrated NV 1242Å
flux in erg/s/cm2 (n51242flux)
318- 326 E9.3 mW/m2 e_FNV1242 [0/4.22e-15]?=-1 FNV1242 uncertainty
(n51242error)
328- 336 E9.3 0.1nm EWNV1242 [0/91.9]?=-1 Observed NV 1242Å
equivalent width in Angstroms
(n51242ew_obs) (2)
338 I1 --- f_FNV1242 [0/5] Flag on FNV1242 (n51242contam)
(1)
340- 348 E9.3 mW/m2 FNV [0/2.07e-16]?=-1 Integrated
NV1238Å,1242Å flux in erg/s/cm2
(n512381242_flux)
350- 358 E9.3 mW/m2 e_FNV [4.2e-20/2.78e-17]?=-1 FNV uncertainty
(n512381242_error)
360- 368 E9.3 0.1nm EWNV [0/191]?=-1 Observed NV1238Å,1242Å
equivalent width in Angstroms
(n512381242ewobs) (2)
370 I1 --- f_FNV [0/5] Flag on FNV (n512381242_contam)
(1)
372- 380 E9.3 mW/m2 FCIV1548 [0/5.81e-15]?=-1 Integrated CIV1548Å
flux in erg/s/cm2 (c41548flux)
382- 390 E9.3 mW/m2 e_FCIV1548 [0/1.51e-14]?=-1 FCIV1548 uncertainty
(c41548error)
392- 400 E9.3 0.1nm EWCIV1548 [-28800/119]?=-1 Observed CIV1548Å
equivalent width in Angstroms
(c41548ew_obs) (2)
402 I1 --- f_FCIV1548 [0/5] Flag on FCIV1548 (c41548contam)
(1)
404- 412 E9.3 mW/m2 FCIV1550 [0/2.9e-15]?=-1 Integrated CIV 1550Å
flux in erg/s/cm2 (c41550flux)
414- 422 E9.3 mW/m2 e_FCIV1550 [0/7.61e-15]?=-1 FCIV1550 uncertainty
(c41550error)
424- 432 E9.3 0.1nm EWCIV1550 [-10700/60.4]?=-1 Observed CIV1550Å
equivalent width in Angstroms
(c41550ew_obs) (2)
434 I1 --- f_FCIV1550 [0/5] Flag on FCIV1550 (c41550contam)
(1)
436- 444 E9.3 mW/m2 FCIV [0/6.58e-16]?=-1 Integrated
CIV1548Å,1550Å flux in erg/s/cm2
(c415481550_flux)
446- 454 E9.3 mW/m2 e_FCIV [0/2.27e-14]?=-1 FCIV uncertainty
(c415481550_error)
456- 464 E9.3 0.1nm EWCIV [-36700/97.5]?=-1 Observed
CIV1548Å,1550Å equivalent width in
Angstroms (c415481550ewobs) (2)
466 I1 --- f_FCIV [0/5] Flag on CIV (c415481550_contam)
(1)
468- 476 E9.3 mW/m2 FHeII1640 [0/1.82e-16]?=-1 Integrated HeII1640Å
flux in erg/s/cm2 (h21640flux)
478- 486 E9.3 mW/m2 e_FHeII1640 [1.6e-20/6.75e-17]?=-1 FHeII1640
uncertainty (h21640error)
488- 496 E9.3 0.1nm EWHeII1640 [-2690/328]?=-1 Observed HeII1640Å
equivalent width in Angstroms
(h21640ew_obs) (2)
498 I1 --- f_FHeII1640 [0/5] Flag on FHeII1640 (h21640contam)
(1)
500- 508 E9.3 mW/m2 FOIII1660 [0/2.24e-16]?=-1 Integrated OIII1660Å
flux in erg/s/cm2 (o31660flux)
510- 518 E9.3 mW/m2 e_FOIII1660 [0/6.75e-17]?=-1 FOIII1660 uncertainty
(o31660error)
520- 528 E9.3 0.1nm EWOIII1660 [-5320/931]?=-1 Observed OIII1660Å
equivalent width in Angstroms
(o31660ew_obs) (2)
530 I1 --- f_FOIII1660 [0/2] Flag on FOIII1660 (o31660contam)
(1)
532- 540 E9.3 mW/m2 FOIII1666 [0/5.51e-16]?=-1 Integrated OIII1666Å
flux in erg/s/cm2 (o31666flux)
542- 550 E9.3 mW/m2 e_FOIII1666 [0/1.66e-16]?=-1 FOIII1666 uncertainty
(o31666error)
552- 560 E9.3 0.1nm EWOIII1666 [-13200/2390]?=-1 Observed OIII1666Å
equivalent width in Angstroms
(o31666ew_obs) (2)
562 I1 --- f_FOIII1666 [0/2] Flag on FOIII1666 (o31666contam)
(1)
564- 572 E9.3 mW/m2 FOIII16 [0/5.22e-16]?=-1 Integrated
OIII1660Å,1666Å flux in erg/s/cm2
(o316601666_flux)
574- 582 E9.3 mW/m2 e_FOIII16 [2.8e-20/1.87e-16]?=-1 FOIII16
uncertainty (o316601666_error)
584- 592 E9.3 0.1nm EWFOIII16 [-11800/1070]?=-1 Observed
OIII1660Å,1666Å equivalent width
in Angstroms (o316601666ewobs) (2)
594 I1 --- f_FOIII16 [0/2] Flag on FOIII16
(o316601666_contam) (1)
596- 604 E9.3 mW/m2 FSiIII1883 [0/8.03e-15]?=-1 Integrated SiIII1883Å
flux in erg/s/cm2 (s31883flux)
606- 614 E9.3 mW/m2 e_FSiIII1883 [0/1.28e-11]?=-1 FSiIII1883 uncertainty
(s31883error)
616- 624 E9.3 0.1nm EWSiIII1883 [-7090/372000]?=-1 Observed SiIII1883Å
equivalent width in Angstroms
(s31883ew_obs) (2)
626 I1 --- f_FSiIII1883 [0/4] Flag on FSiIII1883 (s31883contam)
(1)
628- 636 E9.3 mW/m2 FSiIII1892 [0/1.61e-14]?=-1 Integrated SiIII1892Å
flux in erg/s/cm2 (s31892flux)
638- 646 E9.3 mW/m2 e_FSiIII1892 [0/2.56e-11]?=-1 FSiIII1892 uncertainty
(s31892error)
648- 656 E9.3 0.1nm EWSiIII1892 [-14400/752000]?=-1 Observed
SiIII1892Å equivalent width
in Angstroms (s31892ew_obs) (2)
658 I1 --- f_FSiIII1892 [0/4] Flag on FSiIII1892 (s31892contam)
(1)
660- 668 E9.3 mW/m2 FSiIII [0/5.46e-15]?=-1 Integrated
SiIII1883Å,1892Å flux in erg/s/cm2
(s318831892_flux)
670- 678 E9.3 mW/m2 e_FSiIII [0/3.84e-11]?=-1 FSiIII uncertainty
(s318831892_error)
680- 688 E9.3 0.1nm EWSiIII [-188/2710]?=-1 Observed
SiIII1883Å,1892Å equivalent width
in Angstroms (s318831892ewobs) (2)
690 I1 --- f_FSiIII [0/4] Flag on FSiIII
(s318831892_contam) (1)
692- 700 E9.3 mW/m2 FCIII1907 [0/1.82e-11]?=-1 Integrated CIII1907Å
flux in erg/s/cm2 (c31907flux)
702- 710 E9.3 mW/m2 e_FCIII1907 [0/7.84e-11]?=-1 FCIII1907 uncertainty
(c31907error)
712- 720 E9.3 0.1nm EWCIII1907 [-1.13e+08/11300]?=-1 Observed
CIII1907Å equivalent width
in Angstroms (c31907ew_obs) (2)
722 I1 --- f_FCIII1907 [0/4] Flag on FCIII1907 (c31907contam)
(1)
724- 732 E9.3 mW/m2 FCIII1909 [0/1.22e-07]?=-1 Integrated CIII1909Å
flux in erg/s/cm2 (c31909flux)
734- 742 E9.3 mW/m2 e_FCIII1909 [0/3.92e-08]?=-1 FCIII1909 uncertainty
(c31909error)
744- 752 E9.3 0.1nm EWCIII1909 [-7.61e+11/12200]?=-1 Observed
CIII1909Å equivalent width
in Angstroms (c31909ew_obs) (2)
754 I1 --- f_FCIII1909 [0/4] Flag on FCIII1909 (c31909contam)
(1)
756- 764 E9.3 mW/m2 FCIII [0/3.59e-15]?=-1 Integrated
CIII1907Å,1909Å flux in erg/s/cm2
(c319071909_flux)
766- 774 E9.3 mW/m2 e_FCIII [5.2e-20/1.84e-13]?=-1 FCIII uncertainty
(c319071909_error)
776- 784 E9.3 0.1nm EWCIII [-712/23500]?=-1 Observed
CIII1907Å,1909Å equivalent width
in Angstroms (c319071909ewobs) (2)
786 I1 --- f_FCIII [0/4] Flag on FCIII (c319071909_contam)
(1)
788- 796 E9.3 mW/m2 FMgII2796 [0/6.98e-15]?=-1 Integrated MgII2796Å
flux in erg/s/cm2 (m22796flux)
798- 806 E9.3 mW/m2 e_FMgII2796 [0/7.78e-15]?=-1 FMgII2796 uncertainty
(m22796error)
808- 816 E9.3 0.1nm EWMgII2796 [-7230/4450]?=-1 Observed MgII2796Å
equivalent width in Angstroms
(m22796ew_obs) (2)
818 I1 --- f_FMgII2796 [0/4] Flag on FMgII2796 (m22796contam)
(1)
820- 828 E9.3 mW/m2 FMgII2803 [0/3.49e-15]?=-1 Integrated MgII2803Å
flux in erg/s/cm2 (m22803flux)
830- 838 E9.3 mW/m2 e_FMgII2803 [0/3.89e-15]?=-1 FMgII2803 uncertainty
(m22803error)
840- 848 E9.3 0.1nm EWMgII2803 [-3640/2000]?=-1 Observed MgII2803Å
equivalent width in Angstroms
(m22803ew_obs) (2)
850 I1 --- f_FMgII2803 [0/4] Flag on FMgII2803 (m22803contam)
(1)
852- 860 E9.3 mW/m2 FMgII [0/1.05e-14]?=-1 Integrated
MgII2796Å,2803Å flux in erg/s/cm2
(m227962803_flux)
862- 870 E9.3 mW/m2 e_FMgII [4.3e-20/5.84e-16]?=-1 FMgII uncertainty
(m227962803_error)
872- 880 E9.3 0.1nm EWMgII [-2120/1930]?=-1 Observed
MgII2796Å,2803Å equivalent width
in Angstroms (m227962803ewobs) (2)
882 I1 --- f_FMgII [0/4] Flag on FMgII (m227962803_contam)
(1)
884- 892 E9.3 mW/m2 FOII3727 [0/1.15e-06]?=-1 Integrated OII3727Å
flux in erg/s/cm2 (o23727flux)
894- 902 E9.3 mW/m2 e_FOII3727 [0/1.76e-08]?=-1 FOII3727 uncertainty
(o23727error)
904- 912 E9.3 0.1nm EWOII3727 [-457000/6.18e+13]?=-1 Observed
OII3727Å equivalent width
in Angstroms (o23727ew_obs) (2)
914 I1 --- f_FOII3727 [0/5] Flag on FOII3727 (o23727contam)
(1)
916- 924 E9.3 mW/m2 FOII3730 [0/1.73e-06]?=-1 Integrated OII3730Å
flux in erg/s/cm2 (o23730flux)
926- 934 E9.3 mW/m2 e_FOII3730 [0/2.64e-08]?=-1 FOII3730 uncertainty
(o23730error)
936- 944 E9.3 0.1nm EWOII3730 [-716000/9.44e+13]?=-1 Observed
OII3730Å equivalent width in
Angstroms (o23730ew_obs) (2)
946 I1 --- f_FOII3730 [0/5] Flag on FOII3730 (o23730contam)
(1)
948- 956 E9.3 mW/m2 FOII [0/3.5e-13]?=-1 Integrated
OII3727Å,3730Å flux in erg/s/cm2
(o237273730_flux)
958- 966 E9.3 mW/m2 e_FOII [0/5.37e-13]?=-1 FOII uncertainty
(o237273730_error)
968- 976 E9.3 0.1nm EWOII [-1.17e+06/5090]?=-1 Observed
OII3727Å,3730Å equivalent width in
Angstroms (o237273730ewobs) (2)
978 I1 --- f_FOII [0/5] Flag on FOII (o237273730_contam)
(1)
980- 988 E9.3 mW/m2 FHg [0/4.54e-11]?=-1 Integrated Hg 4342Å
flux in erg/s/cm2 (hg4342flux)
990- 998 E9.3 mW/m2 e_FHg [0/2.75e-09]?=-1 FHg uncertainty
(hg4342error)
1000- 1008 E9.3 0.1nm EWHg [-304000/1.16e+08]?=-1 Observed
Hg 4342Å equivalent width
in Angstroms (hg4342ew_obs) (2)
1010 I1 --- f_FHg [0/4] Flag on FHg (hg4342contam) (1)
1012- 1020 E9.3 mW/m2 FOIII4363 [0/4.78e-16]?=-1 Integrated OIII4363Å
flux in erg/s/cm2 (o34363flux)
1022- 1030 E9.3 mW/m2 e_FOIII4363 [0/1.93e-16]?=-1 FOIII4363 uncertainty
(o34363error)
1032- 1040 E9.3 0.1nm EWFOIII4363 [-165000/6530]?=-1 Observed OIII4363Å
equivalent width in Angstroms
(o34363ew_obs) (2)
1042 I1 --- f_FOIII4363 [0/4] Flag on FOIII4363 (o34363contam)
(1)
1044- 1052 E9.3 mW/m2 FHeII4686 [0/1.11e-10]?=-1 Integrated HeII4686Å
flux in erg/s/cm2 (h24686flux)
1054- 1062 E9.3 mW/m2 e_FHeII4686 [0/1.02e-10]?=-1 FHeII4686 uncertainty
(h24686error)
1064- 1072 E9.3 0.1nm EWHeII4686 [-4.23e+06/2.63e+08]?=-1 Observed
HeII4686Å equivalent width in
Angstroms (h24686ew_obs) (2)
1074 I1 --- f_FHeII4686 [0/4] Flag on FHeII4686 (h24686contam)
(1)
1076- 1084 E9.3 mW/m2 FHb [0/7.08e-12]?=-1 Integrated Hb 4863Å
flux in erg/s/cm2 (hb4863flux)
1086- 1094 E9.3 mW/m2 e_FHb [0/2.33e-08]?=-1 FHb uncertainty
(hb4863error)
1096- 1104 E9.3 0.1nm EWHb [-1.2e+08/8.1e+06]?=-1 Observed
Hb 4863Å equivalent width
in Angstroms (hb4863ew_obs) (2)
1106 I1 --- f_FHb [0/5] Flag on FHb (hb4863contam) (1)
1108- 1116 E9.3 mW/m2 FOIII4959 [0/4.33e-10]?=-1 Integrated OIII4959Å
flux in erg/s/cm2 (o34959flux)
1118- 1126 E9.3 mW/m2 e_FOIII4959 [0/2.19e-07]?=-1 FOIII4959 uncertainty
(o34959error)
1128- 1136 E9.3 0.1nm EWOIII4959 [-3.67e+06/1.25e+08]?=-1 Observed
OIII4959Å equivalent width in
Angstroms (o34959ew_obs) (2)
1138 I1 --- f_FOIII4959 [0/5] Flag on FOIII4959 (o34959contam)
(1)
1140- 1148 E9.3 mW/m2 FOIII5007 [0/1.3e-09]?=-1 Integrated OIII5007Å
flux in erg/s/cm2 (o35007flux)
1150- 1158 E9.3 mW/m2 e_FOIII5007 [0/6.58e-07]?=-1 FOIII5007 uncertainty
(o35007error)
1160- 1168 E9.3 0.1nm EWOIII5007 [-1.38e+07/3.55e+08]?=-1 Observed
OIII5007Å equivalent width in
Angstroms (o35007ew_obs) (2)
1170 I1 --- f_FOIII5007 [0/5] Flag on FOIII5007 (o35007contam)
(1)
1172- 1180 E9.3 mW/m2 FOIII49 [0/2.45e-15]?=-1 Integrated
OIII4959Å,5007Å flux in erg/s/cm2
(o349595007_flux)
1182- 1190 E9.3 mW/m2 e_FOIII49 [0/2.41e-16]?=-1 FOIII49 uncertainty
(o349595007_error)
1192- 1200 E9.3 0.1nm EWOIII49 [-346000/57700]?=-1 Observed
OIII4959Å,5007Å equivalent width
in Angstroms (o349595007ewobs) (2)
1202 I1 --- f_FOIII49 [0/5] Flag on FOIII49
(o349595007_contam) (1)
1204- 1212 E9.3 mW/m2 FOI6300 [0/1.37e-09]?=-1 Integrated OI6300Å
flux in erg/s/cm2 (o16300flux)
1214- 1222 E9.3 mW/m2 e_FOI6300 [0/1.86e-09]?=-1 FOI6300 uncertainty
(o16300error)
1224- 1232 E9.3 0.1nm EWOI6300 [-24100/1.92e+09]?=-1 Observed OI6300Å
equivalent width in Angstroms
(o16300ew_obs) (2)
1234 I1 --- f_FOI6300 [0/5] Flag on FOI6300 (o16300contam)
(1)
1236- 1244 E9.3 mW/m2 FOI6363 [0/4.56e-10]?=-1 Integrated OI6363Å
flux in erg/s/cm2 (o16363flux)
1246- 1254 E9.3 mW/m2 e_FOI6363 [0/6.19e-10]?=-1 FOI6363 uncertainty
(o16363error)
1256- 1264 E9.3 0.1nm EWOI6363 [-851/7.06e+08]?=-1 Observed OI6363Å
equivalent width in Angstroms
(o16363ew_obs) (2)
1266 I1 --- f_FOI6363 [0/5] Flag on FOI6363 (o16363contam)
(1)
1268- 1276 E9.3 mW/m2 FOI [0/1.82e-09]?=-1 Integrated
OI6300Å,6363Å flux in erg/s/cm2
(o163006363_flux)
1278- 1286 E9.3 mW/m2 e_FOI [0/1.08e-09]?=-1 FOI uncertainty
(o163006363_error)
1288- 1296 E9.3 0.1nm EWOI [-4590/2.69e+09]?=-1 Observed
OI6300Å,6363Å equivalent width in
Angstroms (o163006363ewobs) (2)
1298 I1 --- f_FOI [0/5] Flag on FOI (o163006363_contam)
(1)
1300- 1308 E9.3 mW/m2 FNII6550 [0/5.15e-13]?=-1 Integrated NII6550Å
flux in erg/s/cm2 (n26550flux)
1310- 1318 E9.3 mW/m2 e_FNII6550 [0/2.1e-15]?=-1 FNII6550 uncertainty
(n26550error)
1320- 1328 E9.3 0.1nm EWNII6550 [-280000/8360]?=-1 Observed NII6550Å
equivalent width in Angstroms
(n26550ew_obs) (2)
1330 I1 --- f_FNII6550 [0/5] Flag on FNII6550 (n26550contam)
(1)
1332- 1340 E9.3 mW/m2 FHa6565 [0/1.55e-11]?=-1 Inegrated Hα
6565Å flux; in erg/cm2/s units
(ha6565flux)
1342- 1350 E9.3 mW/m2 e_FHa6565 [0/3.07e-12]?=-1 FHa6565 uncertainty
(ha6565error)
1352- 1360 E9.3 0.1nm EWHa6565 [-8.8e+06/257000]?=-1 Hα 6565Å
equivalent width in Angstrom units
(ha6565ew_obs) (2)
1362 I1 --- f_FHa6565 [0/5] Flag on FHa6565 (ha6565contam)
(1)
1364- 1372 E9.3 mW/m2 FNII6585 [8.6e-19/1.69e-16]?=-1 Integrated
NII6585Å flux in erg/s/cm2
(n26585flux)
1374- 1382 E9.3 mW/m2 e_FNII6585 [0/9.22e-18]?=-1 FNII6585 uncertainty
(n26585error)
1384- 1392 E9.3 0.1nm EWNII6585 [-30300/35500]?=-1 Observed NII6585Å
equivalent width in Angstroms
(n26585ew_obs) (2)
1394 I1 --- f_FNII6585 [0/5] Flag on FNII6585 (n26585contam)
(1)
1396- 1404 E9.3 mW/m2 FHa [0/1.6e-11]?=-1 Integrated Hα
6550Å,6565Å,6585Å flux; in
erg/cm2/s units
(ha655065656585flux)
1406- 1414 E9.3 mW/m2 e_FHa [0/3.48e-12]?=-1 FHa uncertainty
(ha655065656585error)
1416- 1424 E9.3 0.1nm EWHa [-9.08e+06/265000]?=-1 Hα
6550Å,6565Å,6585Å equivalent
width in Angstrom units
(ha655065656585ew_obs) (2)
1426 I1 --- f_FHa [0/5] Flag on FHa
(ha655065656585contam) (1)
1428- 1436 E9.3 mW/m2 FSII6716 [0/2.52e-16]?=-1 Integrated SII6716Å
flux in erg/s/cm2 (s26716flux)
1438- 1446 E9.3 mW/m2 e_FSII6716 [0/1.77e-16]?=-1 FSII6716 uncertainty
(s26716error)
1448- 1456 E9.3 0.1nm EWSII6716 [-3220/2740]?=-1 Observed SII6716Å
equivalent width in Angstroms
(s26716ew_obs) (2)
1458 I1 --- f_FSII6716 [0/5] Flag on FSII6716 (s26716contam)
(1)
1460- 1468 E9.3 mW/m2 FSII6731 [0/1.71e-16]?=-1 Integrated SII6731Å
flux in erg/s/cm2 (s26731flux)
1470- 1478 E9.3 mW/m2 e_FSII6731 [0/2.45e-16]?=-1 FSII6731 uncertainty
(s26731error)
1480- 1488 E9.3 0.1nm EWSII6731 [-5940/4670]?=-1 Observed SII6731Å
equivalent width in Angstroms
(s26731ew_obs) (2)
1490 I1 --- f_FSII6731 [0/5] Flag on FSII6731 (s26731contam)
(1)
1492- 1500 E9.3 mW/m2 FSII [0/4.23e-16]?=-1 Integrated
SII6716Å,6731Å flux in erg/s/cm2
(s267166731_flux)
1502- 1510 E9.3 mW/m2 e_FSII [0/4.23e-16]?=-1 FSII uncertainty
(s267166731_error)
1512- 1520 E9.3 0.1nm EWSII [-5890/6330]?=-1 Observed
SII6716Å,6731Å equivalent width in
Angstroms (s267166731ewobs) (2)
1522 I1 --- f_FSII [0/5] Flag on FSII (s267166731_contam)
(1)
1524- 1532 E9.3 mW/m2 FSIII9069 [0/1.59e-10]?=-1 Integrated SIII9069Å
flux in erg/s/cm2 (s39069flux)
1534- 1542 E9.3 mW/m2 e_FSIII9069 [0/1.2e-16]?=-1 FSIII9069 uncertainty
(s39069error)
1544- 1552 E9.3 0.1nm EWSIII9069 [-185000/4.55e+08]?=-1 Observed
SIII9069Å equivalent width
in Angstroms (s39069ew_obs) (2)
1554 I1 --- f_FSIII9069 [0/2] Flag on FSIII9069 (s39069contam)
(1)
1556- 1564 E9.3 mW/m2 FSIII9532 [0/6.42e-17]?=-1 Integrated SIII9532Å
flux in erg/s/cm2 (s39532flux)
1566- 1574 E9.3 mW/m2 e_FSIII9532 [2.6e-20/1.32e-17]?=-1 FSIII9532
uncertainty (s39532error)
1576- 1584 E9.3 0.1nm EWSIII9532 [-373/738]?=-1 Observed SIII9532Å
equivalent width in Angstroms
(s39532ew_obs) (2)
1586 I1 --- f_FSIII9532 [0/2] Flag on FSIII9532 (s39532contam)
(1)
1588- 1596 E9.3 mW/m2 FSIII [0/5.52e-10]?=-1 Integrated
SIII9069Å,9532Å flux in erg/s/cm2
(s390699532_flux)
1598- 1606 E9.3 mW/m2 e_FSIII [0/4.18e-16]?=-1 FSIII uncertainty
(s390699532_error)
1608- 1616 E9.3 0.1nm EWSIII [-3e+06/2.34e+09]?=-1 Observed
SIII9069Å,9532Å equivalent width
in Angstroms (s390699532ewobs) (2)
1618 I1 --- f_FSIII [0/2] Flag on FSIII (s390699532_contam)
(1)
1620- 1628 E9.3 mW/m2 FHeI [0/1.05e-16]?=-1 Integrated HeI 10830Å
flux in erg/s/cm2 (he10830_flux)
1630- 1638 E9.3 mW/m2 e_FHeI [6.3e-20/2.13e-17]?=-1 FHeI uncertainty
(he10830_error)
1640- 1648 E9.3 0.1nm EWHeI [-5890/19600]?=-1 Observed Lya 1216Å
equivalent width in Angstroms
(he10830ewobs) (2)
1650 I1 --- f_FHeI [0/2] Flag on FHeI (he10830_contam) (1)
--------------------------------------------------------------------------------
Note (1): These contamination flags have values of 0-5, with the flag for
an excellent fit being 0. A slightly contaminated fit has a flag of 1,
and a poor fit that should not be used has a flag of 5. A value of 3
indicates a nonideal continuum fit such that the fluxes may be
suspect, and flags are added in a bit-wise manner. Only measurements
with a flag of 0, or a flag of 1 after visual inspection, should be
used for science investigations to ensure the cleanest samples that
are free from fitting and data artifacts.
Note (2): The observed equivalent width is negative when the continuum is
not detected.
--------------------------------------------------------------------------------
History:
Downloaded on: https://archive.stsci.edu/hlsp/mudf (05-Aug-2026)
(DOI: 10.17909/81fp-2g44)
License: CC-BY-4.0
References:
Lusso et al. Paper I. 2019MNRAS.485L..62L 2019MNRAS.485L..62L
Fossati et al. Paper II. 2019MNRAS.490.1451F 2019MNRAS.490.1451F Cat. J/MNRAS/490/1451
Revalski et al. Paper III. 2023ApJS..265...40R 2023ApJS..265...40R Cat. J/ApJS/265/40
Lusso et al. Paper IV. 2023MNRAS.525.4388L 2023MNRAS.525.4388L
Revalski et al. Paper V. 2024ApJ...966..228R 2024ApJ...966..228R This catalog
Beckett et al. Paper VI. 2024ApJ...974..256B 2024ApJ...974..256B
Pensabene et al. Paper VII. 2025A&A...696A..33P 2025A&A...696A..33P
Santo et al. Paper VIII. 2026A&A...707A.359S 2026A&A...707A.359S
(End) Emmanuelle Perret [CDS] 05-Aug-2026