Bibcode
Buitrago, F.; Ferreras, I.
Referencia bibliográfica
Highlights on Spanish Astrophysics X, Proceedings of the XIII Scientific Meeting of the Spanish Astronomical Society held on July 16-20, 2018, in Salamanca, Spain, ISBN 978-84-09-09331-1. B. Montesinos, A. Asensio Ramos, F. Buitrago, R. Schödel, E. Villaver, S. Pérez-Hoyos, I. Ordóñez-Etxeberria (eds.) p. 204-204
Fecha de publicación:
3
2019
Número de citas
0
Número de citas referidas
0
Descripción
The quest to find relic galaxies is ongoing, i.e. galaxies that seem to
remain untouched from the primeval Universe. These galaxies are usually
massive (> 8×10^{10} M_{⊙}), with very small sizes
(effective radius < 2 Kpc) and with old (> 10 Gyr) stellar
populations. Observationally, it is not well tested whether these
objects live in galaxy overdensities, as simulations predict.
Additionally, their number densities in the nearby Universe (z< 0.3)
are also under debate, due to the lack of large area spectroscopic
surveys. To top it up, their sizes and structural parameters are not
very reliable due to the shallow ancillary imaging of previous works,
typically SDSS. I take advantage of the GAMA spectroscopic survey, in
the KiDS and VIKING fiels (˜150 deg^{2}, 2 mag deeper) to create a
complete census of this elusive galaxy population. Each of the galaxies
in my sample, surprisingly being many of them satellites of bigger
objects, are a treasure trove to understand the properties of the high
redshift Universe.