Impact of young stellar components on quiescent galaxies: deconstructing cosmic chronometers
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201731647
Abstract: Cosmic chronometers may be used to measure the age difference between passively evolving galaxy populations to calculate the Hubble parameter H(z). The age estimator emerges from the relationship between the amplitude of the rest frame… read more here.
Keywords: stellar components; age; cosmic chronometers; impact young ... See more keywords
Kinematic constraints on spatial curvature from supernovae Ia and cosmic chronometers
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa3426
Abstract: An approach to estimate the spatial curvature $\Omega_k$ from data independently of dynamical models is suggested, through kinematic parameterizations of the comoving distance ($D_{C}(z)$) with third degree polynomial, of the Hubble parameter ($H(z)$) with a… read more here.
Keywords: kinematic constraints; constraints spatial; curvature supernovae; spatial curvature ... See more keywords
Cosmography using strong-lensing systems and cosmic chronometers
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2465
Abstract: Using a new sub-sample of observed strong gravitational lens systems, for the first time, we present the equation for the angular diameter distance in the y-redshift scenario for cosmography and use it to test the… read more here.
Keywords: systems cosmic; strong lensing; cosmography using; lensing systems ... See more keywords