J/MNRAS/505/1441 High-z H-II star-forming galaxies (Gonzalez-Moran+, 2021)
Independent cosmological constraints from high-z H II galaxies:
new results from VLT-KMOS data.
Gonzalez-Moran A.L., Chavez R., Terlevich E., Terlevich R.,
Fernandez-Arenas D., Bresolin F., Plionis M., Melnick J., Basilakos S.,
Telles E.
<Mon. Not. R. Astron. Soc. 505, 1441-1457 (2021)>
=2021MNRAS.505.1441G 2021MNRAS.505.1441G (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; H II regions ; Star Forming Region;
Line Profiles ; Photometry, hydrogen-line ; Photometry, infrared ;
Redshifts ; Velocity dispersion
Keywords: galaxies: starburst - cosmological parameters - observations -
dark energy
Abstract:
We present independent determinations of cosmological parameters using
the distance estimator based on the established correlation between
the Balmer line luminosity, L(Hβ), and the velocity dispersion
(σ) for H ii galaxies (HIIG). These results are based on new
VLT-KMOS high spectral resolution observations of 41 high-z
(1.3 ≤ z ≤ 2.6) HIIG combined with published data for 45 high-z and
107 z ≤ 0.15 HIIG, while the cosmological analysis is based on the
MultiNest Markov Chain Monte Carlo (MCMC) procedure not considering
systematic uncertainties. Using only HIIG to constrain the matter density
parameter (Ωm), we find Ωm = 0.244+0.040-0.049 (stat),
an improvement over our best previous cosmological parameter
constraints, as indicated by a 37 per cent increase of the figure of
merit. The marginalized best-fitting parameter values for the plane
(Ωm; w0) = (0.249+0.11-0.065 ; -1.18+0.45-0.41) (stat)
show an improvement of the cosmological parameters constraints by 40
per cent. Combining the HIIG Hubble diagram, the cosmic microwave
background (CMB) and the baryon acoustic oscillation (BAO) probes
yields Ωm = 0.298 ± 0.012 and w0 = -1.005 ± 0.051, which are
certainly compatible - although less constraining - than the solution
based on the joint analysis of Ia supernovae (SNIa), CMB and BAO
measurements. An attempt to constrain the evolution of the dark energy
with time (CPL model), using a joint analysis of the HIIG, CMB, and
BAO measurements, shows a degenerate 1σ contour of the
parameters in the (w0, wa) plane.
Description:
We use a new set of high resolution spectrophotometric observations of
high redshift HIIG obtained with KMOS at the ESO VLT to improve the
constraints in the parameters space of the DE EoS and Ωm on the
crucial range of intermediate redshift 1.2 < z < 2.6.
The sample of 96 star-forming galaxies was selected from references
list (see note (1) in tablea1.dat description) and following the
criteria described in detail in Gonzalez-Moran et al.
2019MNRAS.487.4669G 2019MNRAS.487.4669G. The candidates have high rest-frame equivalent
width (EW) in their emission lines in a range of 1.2 < z <1.7 and
1.9 < z < 2.6 in order to observe either Halpha or Hbeta and O III lines
in the H band and K-band.
The data were obtained in service mode from 2016 June to 2017 July for
period 97A with a total of 16 Observing Blocks (OBs) distributed in
two fields on the cosmological field Q2343 (Steidel et al.
2004ApJ...604..534S 2004ApJ...604..534S; Erb et al. 2006ApJ...646..107E 2006ApJ...646..107E,
2006ApJ...647..128E 2006ApJ...647..128E, Cat. J/ApJ/647/128) and from 2016 December to
2017 October for the 98A period, distributed in five FoV on three
cosmological fields: the Ultra Deep Survey (UDS; Cirasuolo et al.
2007MNRAS.380..585C 2007MNRAS.380..585C; Lawrence et al. 2007MNRAS.379.1599L 2007MNRAS.379.1599L, Cat. II/314
and II/319), GOODS-South Deep (GSD; Giavalisco et al.
2004ApJ...600L..93G 2004ApJ...600L..93G, Cat. II/261), and the Cosmic Evolution Survey
(COSMOS; Koekemoer et al. 2007ApJS..172..196K 2007ApJS..172..196K; Scoville et al.
2007ApJS..172....1S 2007ApJS..172....1S), each OB with ∼40 min exposure time.
The observed sample is presented in Table A1. The target name is given
in the first column, the coordinates in the second and third columns,
the cosmological field that each object belongs to in column 4, the
seeing in arcseconds corrected by airmass during the field
observations in column 5, the total exposure time per target in
seconds in column 6, and the reference from where the candidates were
selected in column 7.
After data reduction permetting to do a selective sort on candidates
having or not emission lines dectection and a signal to noise ratio
S/N sufficient to determine the line width with the needed accuracy.
It remains 54 objects which form the sample showed in tablea2.dat.
Next, we have selected only those HIIG that have a logarithmic
velocity dispersion (logσ - εlogσ≤ 1.83) that
minimizes the probability of including rotationally supported systems,
leaving 41 objects (29 news HIIG + 15 HIIG already studied with
MOSFIRE). Finally, joining KMOS data with previous ones (e.g see note
(2) in tablea3.dat description), giving the total sample of 181 HIIGs
for the cosmological analysis exhibited in tablea3.dat.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 65 96 KMOS observed sample of 96 star-forming
galaxies candidates
tablea2.dat 86 54 Measurements for the KMOS sample of remaining
54 star-forming galaxies candidates
tablea3.dat 67 181 Total sample of 181 star-forming galaxies
candidates used for the cosmological analysis
--------------------------------------------------------------------------------
See also:
J/ApJ/647/128 : Hα observations of UV-selected galaxies (Erb, 2006)
J/MNRAS/442/3565 : L-σ relation for massive star formation(Chavez+, 2014)
II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/261 : GOODS initial results (Giavalisco+, 2004)
J/ApJS/203/24 : Structural parameters of galaxies in CANDELS
(van der Wel+, 2012)
J/ApJS/206/10 : CANDELS multiwavelength catalog (Galametz+, 2013)
J/ApJ/742/111 : Extreme emission-line galaxies in CANDELS
(van der Wel+, 2011)
J/ApJ/706/1364 : SINS survey of high-redshift galaxies
(Forster Schreiber+, 2009)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Name Target name of appropriate HIIG candidates
(Name)
16 A1 --- n_Name [a] a when no emission lines detected in the
KMOS data cube (Note)
18- 19 I2 h RAh Right ascension (J2000)
21- 22 I2 min RAm Right ascension (J2000)
24- 29 F6.3 s RAs Right ascension (J2000)
31 A1 --- DE- Sign of declination
32- 33 I2 deg DEd Declination (J2000)
35- 36 I2 arcmin DEm Declination (J2000)
38- 42 F5.2 arcsec DEs Declination (J2000)
44- 50 A7 --- Field Cosmological field name (Field)
52- 55 F4.2 arcsec Seeing Seeing in the V-band corrected by airmass,
as derived from the image headers (Seeing)
57- 61 I5 s ExpTime Observational exposure time (Exptime)
63- 65 A3 --- Refs Literature references of the source
(Candidate) (1)
--------------------------------------------------------------------------------
Note (1): Literature references of the source candidate as follows:
1 = Erb et al. 2006ApJ...646..107E 2006ApJ...646..107E
2 = Erb et al. 2006ApJ...647..128E 2006ApJ...647..128E, Cat. J/ApJ/647/128
3 = Maseda et al. 2013ApJ...778L..22M 2013ApJ...778L..22M,
Cat. J/ApJS/203/24 (table2) and J/ApJS/206/10 (table3)
4 = Maseda et al. 2014ApJ...791...17M 2014ApJ...791...17M
5 = van der Wel et al. 2011ApJ...742..111V 2011ApJ...742..111V, Cat. J/ApJ/742/111
6 = Mancini et al. 2011ApJ...743...86M 2011ApJ...743...86M
7 = Forster Schreiber et al. 2009ApJ...706.1364F 2009ApJ...706.1364F, Cat. J/ApJ/706/1364
8 = Xia et al. 2012AJ....144...28X 2012AJ....144...28X
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Name Target name of appropriate
HIIG candidates (Name)
16- 20 F5.3 --- z HIIG redshift (Redshift)
22- 25 A4 km/s sigmaHa ? Observed Halpha broad line velocity
dispersion (sigmaHalpha) (1)
27- 29 A3 km/s e_sigmaHa ? Mean error on sigmaHa (e_sigmaHalpha) (1)
31- 35 A5 km/s sigmaOIII ? Observed OIII broad line velocity
dispersion (sigmaOIII) (1)
37- 40 A4 km/s e_sigmaOIII ? Mean error on sigmaOIII (e_sigmaOIII) (1)
42- 46 A5 km/s sigmaHb ? Observed Hbeta broad line velocity
dispersion (sigmaHbeta) (1)
48- 51 A4 km/s e_sigmaHb ? Mean error on sigmaHb (e_sigmaHbeta) (1)
53- 56 F4.1 km/s sigmaInst ? Instrumental velocity dispersion
(sigmaInst)
58- 60 F3.1 km/s e_sigmaInst ? Mean error on sigmaI (e_sigmaInst)
62- 65 A4 10-17mW/m2 FHa ? Observational Halpha flux
in 10-17erg/cm2/s (FHalpha) (2)
67- 69 A3 10-17mW/m2 e_FHa ? Mean error on FHa (e_FHalpha) (2)
71- 74 A4 10-17mW/m2 FOIII ? Observational OIII flux
in 10-17erg/cm2/s (FOIII) (2)
76- 78 A3 10-17mW/m2 e_FOIII ? Mean error on FOIII (e_FOIII) (2)
80- 82 A3 10-17mW/m2 FHb ? Observational Hbeta flux
in 10-17erg/cm2/s (FHbeta) (2)
84- 86 A3 10-17mW/m2 e_FHb ? Mean error on FHb (e_FHbeta) (2)
-------------------------------------------------------------------------------
Note (1): Velocity dispersion obtained with Gaussian fits using
the python routine mpfit.
Note (2): Integrated line fluxes obtained by measurements using
the IRAF task splot.
-------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- Sample Sample name of the HIIG (Sample)
19- 32 A14 --- Name Target name of appropriate HIIG (Name)
34- 39 F6.4 --- z Redshift HIIG redshift (Redshift) (1)
41- 45 F5.3 [km/s] log(sigma) 1D velocity dispersion
in log scale (logsigma)
47- 51 F5.3 [km/s] e_log(sigma) Mean error on log(sigma) (e_logsigma)
53- 59 F7.3 [10-17mW/m2] log(FHb) Observational Hbeta flux in
10-17erg/cm2/s in log scale
(logFHbeta)
61- 65 F5.3 [10-17mW/m2] e_log(FHb) Mean error on log(FHb) (e_logFHbeta)
67 I1 --- Ref Sample reference (Note) (2)
--------------------------------------------------------------------------------
Note (1): Typical redshift uncertainty ∼10-4.
Note (2): The references correspond as follows:
1 = KMOS, K-band Multi Object Spectrograph
(KMOS; Sharples et al. 2013Msngr.151...21S 2013Msngr.151...21S)
2 = MOSFIRE at the Keck telescope
(Gonzalez-Moran et al. 2019MNRAS.487.4669G 2019MNRAS.487.4669G)
3 = XShooter, at the Very Large Telescope (VLT)
(Terlevich et al. 2015MNRAS.451.3001T 2015MNRAS.451.3001T)
4 = Taken from the literature,
Erb et al. 2006ApJ...646..107E 2006ApJ...646..107E
Erb et al. 2006ApJ...647..128E 2006ApJ...647..128E, Cat. J/ApJ/647/128
Masters et al. 2014ApJ...785..153M 2014ApJ...785..153M,
Maseda et al. 2014ApJ...791...17M 2014ApJ...791...17M
5 = Local HIIG (Chavez et al. 2014MNRAS.442.3565C 2014MNRAS.442.3565C,
Cat. J/MNRAS/442/3565)
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History:
From electronic version of the journal
(End) Luc Trabelsi [CDS] 23-May-2024