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J1234+3901: an extremely metal-deficient compact star-forming dwarf galaxy at redshift 0.133
Y. I. Izotov, T. X. Thuan, N. G. Guseva
We have obtained optical spectroscopy of one of the most metal-poor dwarf star-forming galaxies (SFG) in the local Universe, J1234+3901, with the Large Binocular Telescope (LBT)/Mu…
Intense CIII] 1907,1909 emission from a strong Lyman continuum emitting galaxy
D. Schaerer, Y. Izotov, K. Nakajima +5
We have obtained the first complete ultraviolet (UV) spectrum of a strong Lyman continuum(LyC) emitter at low redshift -- the compact, low-metallicity, star-forming galaxy J1154+24…
Low-redshift Lyman continuum leaking galaxies with high [OIII]/[OII] ratios
Y. I. Izotov, G. Worseck, D. Schaerer +5
We present observations with the Cosmic Origins Spectrograph onboard the Hubble Space Telescope of five star-forming galaxies at redshifts z in the range 0.2993-0.4317 and with hig…
The frequency of very young galaxies in the local Universe: I. A test for galaxy formation and cosmological models
Dylan P. Tweed, Gary A. Mamon, Trinh X. Thuan +5
In the local Universe, the existence of very young galaxies (VYGs), having formed at least half their stellar mass in the last 1 Gyr, is debated. We predict the present-day fractio…