The UV research groups (GIUV) are regulated in the 1st chapter of the Regulation ACGUV48/2013, which explains the procedure for creating new research structures. They are basic research and organizational structures that result from the voluntary association of researchers that share objectives, facilities, resources and common lines of research. These researchers are also committed to the consolidation and stability of their activity, work in groups and the capability to achieve a sustainable funding.

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Participants

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  • Registered groups in the Register of Research Structures of the Universitat de València - (REIUV)

Extragalactic Astrophysics and Cosmology - TOSCA

Reference of the Group:

GIUV2015-250

 
Description of research activity:
The standard cosmological model needs to be tested against cosmological observations to check its validity and to determine the values of its parameters. This project makes use of different cosmological observations in which the members of the research team are involved for this purpose. On the one hand, we are working on large mappings of galaxies and quasars that provide precise measurements of the redshift in large volumes of the Universe. These catalogues are both photometric (J-PAS) and spectroscopic (DESI). These are major international projects, which will measure very precisely the characteristics of baryonic acoustic oscillations, a fundamental tool for understanding the nature of dark energy, a basic component of the standard cosmological model. On the other hand, we use the phenomenon of gravitational lensing, through observations from different telescopes (GTC, LBT), to study also the properties of dark energy through time delays of multiple images of gravitationally lensed quasars. In addition, and in a more local setting, our team will continue to work on the study and characterisation of the populations of massive stars in the Galaxy. This will continue with the...The standard cosmological model needs to be tested against cosmological observations to check its validity and to determine the values of its parameters. This project makes use of different cosmological observations in which the members of the research team are involved for this purpose. On the one hand, we are working on large mappings of galaxies and quasars that provide precise measurements of the redshift in large volumes of the Universe. These catalogues are both photometric (J-PAS) and spectroscopic (DESI). These are major international projects, which will measure very precisely the characteristics of baryonic acoustic oscillations, a fundamental tool for understanding the nature of dark energy, a basic component of the standard cosmological model. On the other hand, we use the phenomenon of gravitational lensing, through observations from different telescopes (GTC, LBT), to study also the properties of dark energy through time delays of multiple images of gravitationally lensed quasars. In addition, and in a more local setting, our team will continue to work on the study and characterisation of the populations of massive stars in the Galaxy. This will continue with the exploitation of scientific data from the IPHAS photometric mapping, and with the development and exploitation of the VPHAS+ southern hemisphere analogue mapping. Finally, we will carry out microlensing studies on nearby stars, with the aim of detecting Earth-type exoplanets, determining their abundance and characterising the percentage of those located in the region known as the habitability zone.
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Web:

http://tosca.uv.es

 
Scientific-technical goals:
  • Estudio de oscilaciones acusticas de barones en JPAS, Espectroscopia de galaxias rojas a alto z, Explotacion cientifica de los datos de IPHAS
 
Research lines:
  • Large scale structure of the universe.Statistics of galaxy distribution and measurement of baryon acoustic oscillations.
  • Active stars and exoplanets.BeX star study, stellar spectroscopy, exoplanet.
 
Group members:
Name Nature of participation Entity Description
VICENT JOSEP MARTINEZ GARCIADirectorUniversitat de València
Research team
JUAN BAUTISTA FABREGAT LLUECAMemberUniversitat de València
PABLO ARNALTE MURMemberUniversitat de València
ALBERTO FERNANDEZ SOTOCollaboratorConsejo Superior de Investigaciones Científicastenured scientist
 
CNAE:
  • -
 
Associated structure:
  • Astronomy and Astrophysics
 
Keywords:
  • Galaxias, cosmología
  • Estrellas activas, espectroscopia