Age constraints on the cosmic equation of state

Abstract

Dark energy is the invisible fuel that seems to drive the current acceleration of the Universe. Its presence, which is inferred from an impressive convergence of high-quality observational results along with some sucessful theoretical predictions, is also supported by the current estimates of the age of the Universe from dating of local and high-$z$ objects. In this work we study observational constraints on the dark energy equation of state ($w$) from lookback time measurements of high-$z$ galaxies, as recently published by the Gemini Deep Deep Survey (GDDS). In order to build up our lookback time sample from these observations we use 8 high-$z$ galaxies in the redshift interval $1.3\le z\le 2.2$ and assume the total expanding age of the Universe to be $t_0^{obs}=13.6_{-0.3}^{+0.4}$ Gyr, as obtained from current cosmic microwave background data. We show that these age measurements are compatible with values of $w$ close to -1, although there is still space for quintessence ($w>-1$) and phantom ($w<-1$) behaviors. In order to break possible degeneracies in the ${\Omega }_{\mathrm{m}}-w$ plane, we also discuss the bounds on this parametric space when GDDS lookback time measurements are combined with the most recent SNe Ia, CMB and LSS data.

arXiv comment7 Pages, 5 figures, Accepted for publication in Astronomy & Astrophysics

References in corpus (38)

• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Cosmological Constant and Dark Energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Cosmological parameters from SDSS and WMAP
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Cosmological Constant - the Weight of the Vacuum
• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• Constraints on the redshift dependence of the dark energy potential
• Dark Energy Constraints from the Cosmic Age and Supernova
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• Constraints on the equation of state of dark energy and the Hubble constant from stellar ages and the CMB
• Reconstructing the Cosmic Equation of State from Supernova distances
• The Cosmological Constant is Back
• LBDS 53W091: An Old red Galaxy at z=1.552
• The Gemini Deep Deep Survey: I. Introduction to the Survey, Catalogs and Composite Spectra
• Evolved Galaxies at z > 1.5 from the Gemini Deep Deep Survey: The Formation Epoch of Massive Stellar Systems
• Superquintessence
• Testing dark energy beyond the cosmological constant barrier
• Discovery of an ionized Fe-K edge in the z=3.91 Broad Absorption Line Quasar APM 08279+5255 with XMM-Newton
• Thermodynamics, Spectral Distribution and the Nature of Dark Energy
• Constraining the cosmic equation of state from old galaxies at high redshift
• New limits on ${\Omega }_{\Lambda }$ and ${\Omega }_M$ from old galaxies at high redshift
• Lookback time as a test for brane cosmology
• An old quasar in a young dark energy-dominated universe?
• Constraining dark energy models using the lookback time to galaxy clusters and the age of the universe
• Age of High Redshift Objects - a Litmus Test for the Dark Energy Models
• New Vistas in Braneworld Cosmology
• Accelerating universe from gravitational leakage into extra dimensions: confrontation with SNeIa
• Cosmological implications of APM 08279+5255, an old quasar at z = 3.91
• Dark energy and the epoch of galaxy formation
• On The Age Estimation of LBDS 53W091
• The Sun, stellar-population models, and the age estimation of high-redshift galaxies
• Old Galaxies at High Redshift and the Cosmological Constant

Cited by in corpus (37)

• Two new diagnostics of dark energy
• Age-dating Luminous Red Galaxies observed with the Southern African Large Telescope
• A parametric model for dark energy
• Age Problem in the Holographic Dark Energy Model
• Cosmokinetics: A joint analysis of Standard Candles, Rulers and Cosmic Clocks
• Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters
• The age problem in $\Lambda$CDM model
• Observational constraints on late-time Lambda(t) cosmology
• A New Equation of State for Dark Energy Model
• Latest supernovae constraints on f(R) cosmologies
• Lookback time bounds from energy conditions
• Cosmological Constraints from Hubble Parameter on f(R) Cosmologies
• Interacting model of new agegraphic dark energy: observational constraints and age problem
• Scalar Field Dark Energy Perturbations and their Scale Dependence
• Cosmic age problem revisited in the holographic dark energy model
• Constraints on dark energy from the lookback time versus redshift test
• Cosmological Constraints from Hubble parameter $H(z)$ and SN Ia observations
• Cosmic Constraint to DGP Brane Model: Geometrical and Dynamical Perspectives
• Can Old Galaxies at High Redshifts and Baryon Acoustic Oscillations Constrain H_0?
• Exploring the Hubble Tension and Spatial Curvature from the Ages of Old Astrophysical Objects
• Luminous Red Galaxies in Simulations: Cosmic Chronometers?
• Understanding the origin of CMB constraints on Dark Energy
• Testing the (generalized) Chaplygin gas model with the Lookback time-Redshift data
• Cosmological constraints from Radial Baryon Acoustic Oscillation measurements and Observational Hubble data
• Time and distance constraints on accelerating cosmological models
• Age Problem in Lemaitre-Tolman-Bondi Void Models
• Test of conformal gravity with astrophysical observations
• Constraining scalar-tensor quintessence by cosmic clocks
• Thawing Versus. Tracker Behaviour: Observational Evidence
• An updated analysis of two classes of f(R) theories of gravity
• The Age-Redshift Relationship of Old Passive Galaxies
• Probing the course of cosmic expansion with a combination of observational data
• Current lookback time-redshift bounds on dark energy
• Age problem in holographic dark energy
• Forecasting cosmological constraints from age of high-z galaxies
• Cosmic constraint on the unified model of dark sectors with or without a cosmic string fluid in the varying gravitational constant theory
• Cosmological Constraints on the Undulant Universe