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Big Bang nucleosynthesis and the baryonic content of the universe
T. X. Thuan, Y. I. Izotov
A review of the latest measurements of the primordial abundances of the light nuclei D, 3He, 4He and 7Li is given. We discuss in particular the primordial abundance Yp of 4He as me…
VLA HI Line Observations of the Extremely Metal-Poor Blue Compact Dwarf Galaxy SBS 0335-052
S. A. Pustilnik, E. Brinks, T. X. Thuan +2
We present the results of HI mapping with the NRAO VLA of one of the most metal-deficient blue compact dwarf (BCD) galaxies known, SBS 0335-052, with an oxygen abundance of only 1/…
An imaging and spectroscopic study of the very metal-deficient blue compact dwarf galaxy Tol 1214--277
K. J. Fricke, Y. I. Izotov, P. Papaderos +2
We present a spectrophotometric study based on VLT/FORS I observations of one of the most metal-deficient blue compact dwarf (BCD) galaxies known, Tol 1214-277 (Z ~ Zsun/25). The d…
Luminous compact galaxies at intermediate redshifts: progenitors of bulges of massive spirals ?
F. Hammer, N. Gruel, T. Thuan +2
VLT spectra of 14 luminous compact galaxies (LCGs) reveal strong metallic absorption line sytems as well as narrow and intense emission lines. Their gas extinction is found to be l…
The KPNO International Spectroscopic Survey. II. H-alpha Selected Survey List 1
J. J. Salzer, C. Gronwall, V. A. Lipovetsky +7
The KPNO International Spectroscopic Survey (KISS) is a new objective-prism survey for extragalactic emission-line objects. It combines many of the features of previous slitless sp…
The near-infrared view of SBS 0335-052
L. Vanzi, L. H. Hunt, T. X. Thuan +1
We present near-infrared (NIR) spectra, deep J, H and K low-resolution ima ges, and high-resolution images in J and Ks of the low-metallicity blue dwarf gal axy SBS 0335-052. These…