453 citations · 5.6k across the 136 of their papers we have counts for
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Charting the expansion of the Universe from z0 to z14 with HII galaxies
R. Chávez, R. Terlevich, A. L. González-Morán +14
We present an updated Hubble diagram of giant extragalactic H II regions and H II galaxies spanning the redshift interval to , extending the use of the $L(\math…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Mapping the Hubble Flow from z0 to z7.5 with HII Galaxies
Ricardo Chávez, Roberto Terlevich, Elena Terlevich +7
Over twenty years ago, Type Ia Supernovae (SNIa) observations revealed an accelerating Universe expansion, suggesting a significant dark energy presence, often modelled as a cosmol…
Cosmological Constraints using the newest VLT-KMOS HII Galaxies and the full Planck CMB spectrum
Pavlina Tsiapi, Spyros Basilakos, Manolis Plionis +7
We present novel cosmological constraints based on a joint analysis of our HII galaxies (HIIG) Hubble relation with the full Planck Cosmic Microwave Background anisotropy spectrum…
Using newest VLT-KMOS HII Galaxies and other cosmic tracers to test the CDM tension
Ahmad Mehrabi, Spyros Basilakos, Pavlina Tsiapi +8
We place novel constraints on the cosmokinetic parameters by using a joint analysis of the newest VLT-KMOS HII galaxies (HIIG) with the Supernovae Type Ia (SNIa) Pantheon sample. W…
Independent cosmological constraints from high-z HII galaxies: new results from VLT-KMOS data
Ana Luisa González-Morán, Ricardo Chávez, Elena Terlevich +7
We present independent determinations of cosmological parameters using the distance estimator based on the established correlation between the Balmer line luminosity, L(H), and…
An independent determination of the local Hubble constant
David Fernández-Arenas, Elena Terlevich, Roberto Terlevich +6
The relationship between the integrated H line luminosity and the velocity dispersion of the ionized gas of HII galaxies and giant HII regions represents an exciting standard ca…
Constraining the Dark Energy Equation of State with HII Galaxies
Ricardo Chávez, Manolis Plionis, Spyros Basilakos +5
We use the HII galaxies relation and the resulting Hubble expansion cosmological probe of a sample of just 25 high- (up to ) HII galaxies, in a joint likeli…
On the road to precision cosmology with high redshift HII galaxies
Roberto Terlevich, Elena Terlevich, Jorge Melnick +4
We report the first results of a programme aimed at studying the properties of high redshift galaxies with on-going massive and dominant episodes of star formation (HII galaxies).…
Implications of the kinematical structure of circumnuclear star-forming regions on their derived properties
Guillermo F. Hagele, Angeles I. Diaz, Roberto Terlevich +3
[Abbreviated] We review the results of high dispersion spectroscopy of 17 circumnuclear starforming regions (CNSFRs) in 3 nearby early spiral galaxies, NGC2903, NGC3310 and NGC3351…
The Environment of HII Galaxies revisited
E. Koulouridis, M. Plionis, R. Chávez +4
We present a study of the close (< 200 kpc) environment of 110 relatively local (z< 0.16) HII galaxies, selected from the Sloan Digital Sky Survey (SDSS; DR7). We use available spe…
Integral field spectroscopy of HII regions in M33
Jesús López-Hernández, Elena Terlevich, Roberto Terlevich +5
Integral field spectroscopy (IFS) is presented for star forming regions in M33. A central area of 300 x 500 pc^2 and the external HII region IC 132, at a galactocentric distance {\…
Qualitative interpretation of galaxy spectra
J. Sanchez Almeida, R. Terlevich, E. Terlevich +2
We describe a simple step-by-step guide to qualitative interpretation of galaxy spectra. Rather than an alternative to existing automated tools, it is put forward as an instrument…
Circumnuclear star-forming regions in early type spiral galaxies: dynamical masses
G. F. Hagele, M. V. Cardaci, G. L. Bosch +3
We present the measurements of gas and stellar velocity dispersions in 17 circumnuclear star-forming regions (CNSFRs) and the nuclei of three barred spiral galaxies: NGC2903, NGC33…
Modelling the composition of a young star cluster ejecta
Mercedes Mollá, Roberto Terlevich
We have computed with a fine time grid the evolution of the elemental abundances of He, C, N and O ejected by a young (t < 20 Myr) and massive (M\,\Msun) coeval stellar cl…
Determining the Hubble constant using Giant extragalactic HII regions and HII galaxies
Ricardo Chavez, Elena Terlevich, Roberto Terlevich +4
We report the first results of a long term program aiming to provide accurate independent estimates of the Hubble constant (H0) using the L-sigma distance estimator for Giant extra…
Evolution of star forming dwarf galaxies: Characterizing the star formation scenarios
M. L. Martín-Manjón, M. Mollá, A. I. Díaz +1
We use the self-consistent model technique developed by Martín-Manjón et al. (2008) that combines the chemical evolution with stellar population synthesis and photo-ionization code…
A Strategy to Measure the Dark Energy Equation of State using the HII galaxy Hubble Relation & X-ray AGN Clustering: Preliminary Results
M. Plionis, R. Terlevich, S. Basilakos +4
We explore the possibility of setting stringent constraints to the Dark Energy equation of state using alternative cosmic tracers like: (a) the Hubble relation using HII galaxies,…
Abundance determination of multiple star-forming regions in the HII galaxy SDSS J165712.75+321141.4
Guillermo F. Hagele, Ruben Garcia-Benito, Enrique Perez-Montero +5
We analyze high signal-to-noise spectrophotometric observations acquired simultaneously with TWIN, a double-arm spectrograph, from 3400 to 10400 Åof three star-forming regions in t…
Integral Field Spectroscopy of HII region complexes. The outer disk of NGC 6946
R. García-Benito, A. Díaz, G. F. Hägele +7
Integral Field Spectroscopy obtained with PPak and the 3.5m telescope at the Calar Alto Observatory has been used to study an outer HII region complex in the well studied galaxy NG…
Sub-arcsecond radio continuum mapping in and around the spiral galaxy NGC3351 using MERLIN
Guillermo F. Hagele, Yago Ascasibar, Anita M. S. Richards +6
We report sub-arcsecond scale radio continuum observations of a field of 35 by 22 arcmin centred in NGC3351 obtained with the Multi-Element Radio Linked Interferometer Network (MER…
The circumnuclear environment of the peculiar galaxy NGC 3310
Guillermo F. Hagele, Angeles I. Diaz, Monica V. Cardaci +2
Gas and star velocity dispersions have been derived for eight circumnuclear star-forming regions (CNSFRs) and the nucleus of the spiral galaxy NGC3310 using high resolution spectro…
The Dark Energy Equation of State using Alternative High-z Cosmic Tracers
M. Plionis, R. Terlevich, S. Basilakos +4
We propose to use alternative cosmic tracers to measure the dark energy equation of state and the matter content of the Universe [w(z) & Omega_m]. Our proposed method consists of t…
Evolution of the X-ray Luminosity in Young HII Galaxies
D. Rosa González, E. Terlevich, E. Jiménez Bailón +5
In an effort to understand the correlation between X-ray emission and present star formation rate (SFR), we obtained XMM-Newton data to estimate the X-ray luminosities of a sample…