%0 Generic %1 bakx2022redshift %A Bakx, Tom J. L. C. %A Zavala, Jorge A. %A Mitsuhashi, Ikki %A Treu, Tommaso %A Fontana, Adriano %A Tadaki, Ken-ichi %A Casey, Caitlin M. %A Castellano, Marco %A Glazebrook, Karl %A Hagimoto, Masato %A Ikeda, Ryota %A Jones, Tucker %A Leethochawalit, Nicha %A Mason, Charlotte %A Morishita, Takahiro %A Nanayakkara, Themiya %A Pentericci, Laura %A Roberts-Borsani, Guido %A Santini, Paola %A Serjeant, Stephen %A Tamura, Yoichi %A Trenti, Michele %A Vanzella, Eros %D 2022 %K library %T Deep ALMA redshift search of a z~12 GLASS-JWST galaxy candidate %U http://arxiv.org/abs/2208.13642 %X The James Webb Space Telescope (JWST) has discovered a surprising abundance of bright galaxy candidates in the very early Universe (<500Myrs after the Big Bang), calling into question current galaxy formation models. Spectroscopy is needed to confirm the primeval nature of these candidates, as well as to understand how the first galaxies form stars and grow. Here we present deep spectroscopic and continuum ALMA observations towards GHZ2/GLASS-z13, one of the brightest and most robust candidates at z>10, identified in the GLASS-JWST Early Release Science Program. While the lack of dust continuum detection supports its high-redshift nature by ruling out lower redshift dusty interlopers, we do not detect any bright emission line at the position of the target despite covering a total of 30GHz and 98% of the source's redshift probability distribution (z=11.9-13.5). A tentative emission line is identified 0.5arcsec away from the JWST position of GHZ2/GLASS-z13, which would imply a spectroscopic redshift of z=12.117+/-0.012 if associated with the OIII88um line. Further confirmation is though necessary to confirm the signal is astrophysical and associated with the target. The current constraints on the oxygen line luminosity place it along (or below) the OIII-SFR relation for metal-poor galaxies. The low metallicity and dust content implied by these observations are also consistent with the blue UV slope observed by JWST, which suggest negligible dust attenuation in galaxies at this early epoch. This work illustrates the synergy between JWST and ALMA and paves the way for future spectroscopic surveys of z > 10 galaxy candidates.

@misc{bakx2022redshift, abstract = {The James Webb Space Telescope (JWST) has discovered a surprising abundance of bright galaxy candidates in the very early Universe (<500Myrs after the Big Bang), calling into question current galaxy formation models. Spectroscopy is needed to confirm the primeval nature of these candidates, as well as to understand how the first galaxies form stars and grow. Here we present deep spectroscopic and continuum ALMA observations towards GHZ2/GLASS-z13, one of the brightest and most robust candidates at z>10, identified in the GLASS-JWST Early Release Science Program. While the lack of dust continuum detection supports its high-redshift nature by ruling out lower redshift dusty interlopers, we do not detect any bright emission line at the position of the target despite covering a total of 30GHz and 98% of the source's redshift probability distribution (z=11.9-13.5). A tentative emission line is identified 0.5arcsec away from the JWST position of GHZ2/GLASS-z13, which would imply a spectroscopic redshift of z=12.117+/-0.012 if associated with the [OIII]88um line. Further confirmation is though necessary to confirm the signal is astrophysical and associated with the target. The current constraints on the oxygen line luminosity place it along (or below) the [OIII]-SFR relation for metal-poor galaxies. The low metallicity and dust content implied by these observations are also consistent with the blue UV slope observed by JWST, which suggest negligible dust attenuation in galaxies at this early epoch. This work illustrates the synergy between JWST and ALMA and paves the way for future spectroscopic surveys of z > 10 galaxy candidates.}, added-at = {2022-08-30T09:25:03.000+0200}, author = {Bakx, Tom J. L. C. and Zavala, Jorge A. and Mitsuhashi, Ikki and Treu, Tommaso and Fontana, Adriano and Tadaki, Ken-ichi and Casey, Caitlin M. and Castellano, Marco and Glazebrook, Karl and Hagimoto, Masato and Ikeda, Ryota and Jones, Tucker and Leethochawalit, Nicha and Mason, Charlotte and Morishita, Takahiro and Nanayakkara, Themiya and Pentericci, Laura and Roberts-Borsani, Guido and Santini, Paola and Serjeant, Stephen and Tamura, Yoichi and Trenti, Michele and Vanzella, Eros}, biburl = {https://www.bibsonomy.org/bibtex/251493c8b7b3850f962c6e85dfe7db330/gpkulkarni}, description = {Deep ALMA redshift search of a z~12 GLASS-JWST galaxy candidate}, interhash = {24a2cdf3373e5e095c45de4784a9e5f1}, intrahash = {51493c8b7b3850f962c6e85dfe7db330}, keywords = {library}, note = {cite arxiv:2208.13642Comment: Submitted to MNRAS. Comments welcome}, timestamp = {2022-08-30T09:25:03.000+0200}, title = {Deep ALMA redshift search of a z~12 GLASS-JWST galaxy candidate}, url = {http://arxiv.org/abs/2208.13642}, year = 2022 }