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Abundances in the H I envelope of the extremely low-metallicity Blue Compact Dwarf Galaxy SBS 0335-052 from Far Ultraviolet Spectroscopic Explorer observations
T. X. Thuan, A. Lecavelier des Etangs, Y. I. Izotov
We present FUSE spectroscopy of SBS 0335-052, the second most metal-deficient blue compact dwarf (BCD) galaxy known (log O/H = -4.70). In addition to the H I Lyman series, we detec…
Pox 186: an ultracompact galaxy with dominant ionized gas emission
N. G. Guseva, P. Papaderos, Y. I. Izotov +2
We present a ground-based optical spectroscopic and HST U, V, I photometric study of the blue compact dwarf (BCD) galaxy Pox 186. It is found that the emission of the low-surface b…
Deep VLT spectroscopy of the blue compact dwarf galaxies Tol 1214-277 and Tol 65
Y. I. Izotov, P. Papaderos, N. G. Guseva +2
We present VLT spectroscopic observations with different spectral resolutions and different slit orientations of the two metal-deficient blue compact dwarf (BCD) galaxies Tol 1214-…
Deep Hubble Space Telescope/ACS Observations of I Zw 18: a Young Galaxy in Formation
Y. I. Izotov, T. X. Thuan
We present V and I photometry of the resolved stars in the most metal-deficient blue compact dwarf galaxy known, I Zw 18 (Zsun/50), using Hubble Space Telescope/Advanced Camera for…
HS 0837+4717 -- a metal-deficient blue compact galaxy with large nitrogen excess
Simon Pustilnik, Alexei Kniazev, Alexander Pramskij +5
(Abridged) We present the results of high S/N long-slit spectroscopy with the Multiple Mirror and the SAO 6-m telescopes, optical imaging with the Wise 1-m telescope and HI observa…
Discovery of the high--ionization emission line [Ne V] 3426 in the blue compact dwarf galaxy Tol 1214-277
Y. I. Izotov, K. G. Noeske, N. G. Guseva +3
The discovery of the high-ionization [Ne V] 3426A emission line in the spectrum of the blue compact dwarf (BCD) galaxy Tol 1214-277 is reported. The detection of this line implies…