115 citations · 115 across the 2 of their papers we have counts for
3 papers
astro-ph2006★ 115 cited
Empirical strong-line oxygen abundance calibrations from galaxies with electron temperature measurements
S. Y. Yin, Y. C. Liang, F. Hammer +4
We determine the gas-phase oxygen abundance for a sample of 695 galaxies and H II regions with reliable detections of [O III]4363, using the temperature-sensitive Te method. Our ai…
astro-ph2003
String Imprints from a Pre-inflationary Era
P. P. Avelino, C. J. A. P. Martins
We derive the equations governing the dynamics of cosmic strings in a flat anisotropic universe of Bianchi type I and study the evolution of simple cosmic string loop solutions. We…
astro-ph2002
Varying in the early universe: CMB, LSS and FMA
C. J. A. P. Martins
I review recent constraints on and claimed detections of a time-varying fine-structure constant , and discuss our own work, particularly on the effects of in the cosmic micr…