5 papers
Morphology-dependent trends of galaxy age with environment in Abell 901/902 seen with COMBO-17
C. Wolf, M. E. Gray, A. Aragon-Salamanca +2
We investigate correlations between galaxy age and environment in the Abell 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, c…
Star Formation Rate estimators: [OII]3727 vs. Halpha for local star-forming galaxies
A. Aragon-Salamanca, A. Alonso-Herrero, J. Gallego +4
The [OII]3727 emission line is frequently used as an indicator of the star formation rate (SFR) despite its complex dependence on metallicity and excitation conditions. We have ana…
The K-band Hubble diagram for the brightest cluster galaxies: a test for galaxy formation and evolution models
A. Aragon-Salamanca, C. M. Baugh, G. Kauffmann
The K-band Hubble diagram for a sample of brightest cluster galaxies (BCGs) in the redshift range 0<z<1 shows a very small scatter (0.3 magnitudes r.m.s). The BCGs exhibit very lit…
Line-Strength Gradients in Cooling Flow Galaxies
N. Cardiel, J. Gorgas, A. Aragon-Salamanca
We present new results on line-strength gradients in a sample of 18 brightest cluster galaxies (13 in clusters with cooling flows and 5 in clusters without). Here we focus on the s…
The Deficit of Distant Galaxy Clusters in the RIXOS X-ray Survey
F. J. Castander, R. G. Bower, R. S. Ellis +8
Clusters of galaxies are the largest gravitationally bound systems and therefore provide an important way of studying the formation and evolution of the large scale structure of th…