168 citations · 754 across the 23 of their papers we have counts for
Showing astro-ph.COShow all
3 papers · 1 filter
astro-ph.CO2011★ 2 cited
The most distant compact groups
C. M. Gutierrez
We present photometric and spectroscopic observations of the members of three previously cataloged compact group (CG) candidates at redshifts z>0.3. These confirm spectroscopic red…
astro-ph.CO2010★ 12 cited
The value of the fine structure constant over cosmological times
C. M. Gutierrez, M. Lopez-Corredoira
The optical spectra of objects classified as QSOs in the SDSS DR6 are analyzed with the aim of determining the value of the fine structure constant in the past and then check for p…
astro-ph.CO2009★ 10 cited
The spatial distribution of galaxies within the CMB cold spot in the Corona Borealis supercluster
C. P. Padilla-Torres, C. M. Gutierrez, R. Rebolo +2
We study the spatial distribution and colours of galaxies within the region covered by the cold spot in the cosmic microwave background (CMB) recently detected by the Very Small Ar…