Constraining the Dark Energy Equation of State with HII Galaxies

Abstract

We use the HII galaxies $L-\sigma$ relation and the resulting Hubble expansion cosmological probe of a sample of just 25 high-$z$ (up to $z\sim 2.33$) HII galaxies, in a joint likelihood analysis with other well tested cosmological probes (CMB, BAOs) in an attempt to constrain the dark energy equation of state (EoS). The constraints, although still weak, are in excellent agreement with those of a similar joint analysis using the well established SNIa Hubble expansion probe. Interestingly, even with the current small number of available high redshift HII galaxies, the HII/BAO/CMB joint analysis gives a 13% improvement of the quintessence dark energy cosmological constraints compared to the BAO/CMB joint analysis. We have further performed extensive Monte Carlo simulations, with a realistic redshift sampling, to explore the extent to which the use of the $L-\sigma$ relation, observed in HII galaxies, can constrain effectively the parameter space of the dark energy EoS. The simulations predict substantial improvement in the constraints when increasing the sample of high-$z$ HII galaxies to 500, a goal that can be achieved in reasonable observing times with existing large telescopes and state-of-the-art instrumentation.

Accepted for publication in MNRAS on 21st July 2016. 10 pages, 5 figures

References in corpus (8)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• The Stellar, Gas and Dynamical Masses of Star-Forming Galaxies at z~2
• H-alpha Observations of a Large Sample of Galaxies at z~2: Implications for Star Formation in High Redshift Galaxies
• Testing LCDM with the Growth Function δ(a): Current Constraints
• On the Growth of Perturbations as a Test of Dark Energy
• The Nature of Extreme Emission Line Galaxies at z=1-2: Kinematics and Metallicities from Near-Infrared Spectroscopy
• The $L-\sigma$ relation for massive bursts of star formation
• Analytical Estimate of the Effect of Spherical Inhomogeneities on Luminosity Distance and Redshift

Cited by in corpus (29)

• Challenges for $\Lambda$CDM: An update
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• An independent determination of the local Hubble constant
• Einstein, Planck and Vera Rubin: relevant encounters between the Cosmological and the Quantum Worlds
• Independent Cosmological Constraints from high-z HII Galaxies
• Independent cosmological constraints from high-z HII galaxies: new results from VLT-KMOS data
• Cosmological constraints from HII starburst galaxy apparent magnitude and other cosmological measurements
• Barrow Entropy Cosmology: an observational approach with a hint of stability analysis
• Inflation in a closed universe
• The HII Galaxy Hubble Diagram Strongly Favors $R_{\mathrm{h}}=ct$ over $\Lambda$CDM
• Dynamical dark energy confronted with multiple CMB missions
• Cosmological constraints from HII starburst galaxy, quasar angular size, and other measurements
• Observational constraints and predictions of the interacting dark sector with field-fluid mapping
• Observational Constraints on Dynamical Dark Energy Models
• Investigating the accelerated expansion of the Universe through updated constraints on viable $f(R)$ models within the metric formalism
• Complete cosmological model based on a asymmetric scalar Higgs doublet
• New parametrization of the dark-energy equation of state with a single parameter
• Constraining f(R) models with cosmic chronometers and the HII galaxy Hubble diagram
• A hybrid model of viscous and Chaplygin gas to tackle the Universe acceleration
• Using newest VLT-KMOS HII Galaxies and other cosmic tracers to test the $\Lambda$CDM tension
• The fate of bound systems through Sudden Future Singularities
• Cosmological Models Based on a Statistical System of Scalar Charged Degenerate Fermions and an Asymmetric Higgs Scalar Doublet
• Testing the standardizability of, and deriving cosmological constraints from, a new Amati-correlated gamma-ray burst data compilation
• Testing the $R_{\mathrm{h}}=ct$ Universe Jointly with the Redshift-dependent Expansion rate and Angular-diameter and Luminosity Distances
• Constraints on power law cosmology from cosmic chronometer, standard ruler, and standard candle data
• Cosmological Constraints using the newest VLT-KMOS HII Galaxies and the full Planck CMB spectrum
• Low- and high-redshift H II starburst galaxies obey different luminosity-velocity dispersion relations
• Spatially-resolved properties of the ionized gas in the HII galaxy J084220+115000
• The PAU Survey: Classifying low-z SEDs using Machine Learning clustering