%0 Generic %1 hu2016ultraluminous %A Hu, E. M. %A Cowie, L. L. %A Songaila, A. %A Barger, A. J. %A Rosenwasser, B. %A Wold, I. %D 2016 %K emitters high-z infall lya outflows %T An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6 %U http://arxiv.org/abs/1606.03526 %X We report the detection of the most luminous high-redshift Lyman Alpha Emitting galaxy (LAE) yet seen, with log L(Ly alpha) = 43.9 ergs/s. The galaxy -- COSMOS Lyman alpha 1, or COLA1 -- was detected in a search for ultra-luminous LAEs with Hyper Suprime-Cam on the Subaru telescope. It was confirmed to lie at z = 6.593 based on a Lyman alpha line detection obtained from followup spectroscopy with the DEIMOS spectrograph on Keck2. COLA1 is the first very high-redshift LAE to show a multi-component Lyman alpha line profile with a blue wing, which suggests that it could lie in a highly ionized region of the intergalactic medium and could have significant infall. If this interpretation is correct, then ultra-luminous LAEs like COLA1 offer a unique opportunity to determine the properties of the HII regions around these galaxies which will help in understanding the ionization of the z ~ 7 intergalactic medium.

@misc{hu2016ultraluminous, abstract = {We report the detection of the most luminous high-redshift Lyman Alpha Emitting galaxy (LAE) yet seen, with log L(Ly alpha) = 43.9 ergs/s. The galaxy -- COSMOS Lyman alpha 1, or COLA1 -- was detected in a search for ultra-luminous LAEs with Hyper Suprime-Cam on the Subaru telescope. It was confirmed to lie at z = 6.593 based on a Lyman alpha line detection obtained from followup spectroscopy with the DEIMOS spectrograph on Keck2. COLA1 is the first very high-redshift LAE to show a multi-component Lyman alpha line profile with a blue wing, which suggests that it could lie in a highly ionized region of the intergalactic medium and could have significant infall. If this interpretation is correct, then ultra-luminous LAEs like COLA1 offer a unique opportunity to determine the properties of the HII regions around these galaxies which will help in understanding the ionization of the z ~ 7 intergalactic medium.}, added-at = {2016-06-14T09:49:17.000+0200}, author = {Hu, E. M. and Cowie, L. L. and Songaila, A. and Barger, A. J. and Rosenwasser, B. and Wold, I.}, biburl = {https://www.bibsonomy.org/bibtex/274b904fed5400f74a16683c8ae4722ed/miki}, description = {[1606.03526] An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6}, interhash = {8a0462e1ac8e0bcf8db92fd1b797beb5}, intrahash = {74b904fed5400f74a16683c8ae4722ed}, keywords = {emitters high-z infall lya outflows}, note = {cite arxiv:1606.03526Comment: 6 pages, 4 figures, 1 table, accepted for publication in ApJ Letters}, timestamp = {2016-06-14T09:49:17.000+0200}, title = {An Ultraluminous Lyman Alpha Emitter with a Blue Wing at z=6.6}, url = {http://arxiv.org/abs/1606.03526}, year = 2016 }