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The UV Properties of SDSS Selected Quasars
George B. Trammell, Daniel E. Vanden Berk, Donald P. Schneider +4
We present an analysis of the broadband UV/optical properties of z<3.4 quasars matched in the Galaxy Evolution Explorer (GALEX) General Data Release 1 (GR1) and the Sloan Digital S…
New southern blue compact dwarf galaxies in the 2dF Galaxy Redshift Survey
P. Papaderos, N. G. Guseva, Y. I. Izotov +3
Aiming to find new extremely metal-deficient star-forming galaxies we extracted from the Two-Degree Field Galaxy Redshift Survey (2dFGRS) 100K Data Release 14 emission-line galaxie…
Oxygen abundance variations in the system of the two blue compact dwarf galaxies SBS 0335-052E and SBS 0335-052W
P. Papaderos, Y. I. Izotov, N. G. Guseva +2
We present 3.6m ESO telescope spectroscopic observations of the system of the two blue compact dwarf galaxies SBS 0335-052W and SBS 0335-052E. The oxygen abundance in SBS 0335-052W…
The 2005 outburst of the halo black hole X-ray transient XTE J1118+480
C. Zurita, M. A. P. Torres, D. Steeghs +15
We present optical and infrared monitoring of the 2005 outburst of the halo black hole X-ray transient XTE J1118+480. We measured a total outburst amplitude of ~5.7+-0.1 mag in the…
Oxygen abundances in the most oxygen-rich spiral galaxies
L. S. Pilyugin, T. X. Thuan, J. M. Vilchez
Oxygen abundances in the spiral galaxies expected to be richest in oxygen are estimated. The new abundance determinations are based on the recently discovered ff-relation between a…