GOYA Survey: U and B Number Counts in the Groth-Westphal Strip

Eliche-Moral, C.; Balcells, M.; Prieto, M.; Cristóbal-Hornillos, D.
Referencia bibliográfica

II International GTC Workshop: Science with GTC 1st-light Instruments and the LMT (Eds. A. M. Hidalgo-Gámez, J. J. González, J. M. Rodríguez Espinosa, and S. Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias) Vol. 24, pp. 237-238 (2005) (http://www.astroscu.unam.mx/~rmaa/)

Fecha de publicación:
12
2005
Número de autores
4
Número de autores del IAC
0
Número de citas
1
Número de citas referidas
1
Descripción
We present U and B galaxy number counts from a field that comprises a 0.29 square degrees area of sky, and which covers the Groth-Westphal Strip (Groth et al.,1994). Reached 50% limiting magnitudes are 24.8 magnitudes in U and 25.5 in B in the Vega system, which makes our U number counts to have the biggest area×depth product at the moment. These data are part of the GOYA Survey (Galaxy Origins and Young Assembly), a deep multiband survey whose principal aim is creating a database to provide the NIR multiobjet spectrograph EMIR at GTC with identified samples of galaxies at cosmological distances up to z=3. Preliminary results based on fits of evolutionary codes of galaxy populations to the observed number counts, simultaneously to U, B and K[S] filters, show that an standard -dominated cosmological model reproduces the optical and IR counts better than the Einstein-de Sitter one.