A Search for H-Dropout Lyman Break Galaxies at z\textasciitilde13. Harikane, Y., Inoue, A. K., Mawatari, K., Hashimoto, T., Yamanaka, S., Fudamoto, Y., Matsuo, H., Tamura, Y., Dayal, P., Yung, L. Y. A., Hutter, A., Pacucci, F., & Sugahara, Y. arXiv:2112.09141 [astro-ph], December, 2021. arXiv: 2112.09141![A Search for H-Dropout Lyman Break Galaxies at z\textasciitilde13 [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex We present two bright galaxy candidates at z\textasciitilde13 identified in our H-dropout Lyman break selection with 2.3 deg\textasciicircum2 near-infrared deep imaging data. These galaxy candidates, selected after careful screening of foreground interlopers, have spectral energy distributions showing a sharp discontinuity around 1.7 um, a flat continuum at 2-5 um, and non-detections at \textless1.2 um in the available photometric datasets, all of which are consistent with a z\textasciitilde13 galaxy. An ALMA program targeting one of the candidates shows a tentative 4sigma [OIII]88um line at z=13.27, in agreement with its photometric redshift estimate. The number density of the z\textasciitilde13 candidates is comparable to that of bright z\textasciitilde10 galaxies, and is consistent with a recently proposed double power-law luminosity function rather than the Schechter function, indicating little evolution in the abundance of bright galaxies from z\textasciitilde4 to 13. Comparisons with theoretical models show that the models cannot reproduce the bright end of rest-frame ultraviolet luminosity functions at z\textasciitilde10-13. Combined with recent studies reporting similarly bright galaxies at z\textasciitilde9-11 and mature stellar populations at z\textasciitilde6-9, our results indicate the existence of a number of star-forming galaxies at z\textgreater10, which will be detected with upcoming space missions such as James Webb Space Telescope, Nancy Grace Roman Space Telescope, and GREX-PLUS.
@article{harikane_search_2021,
title = {A {Search} for {H}-{Dropout} {Lyman} {Break} {Galaxies} at z{\textasciitilde}13},
url = {http://arxiv.org/abs/2112.09141},
abstract = {We present two bright galaxy candidates at z{\textasciitilde}13 identified in our H-dropout Lyman break selection with 2.3 deg{\textasciicircum}2 near-infrared deep imaging data. These galaxy candidates, selected after careful screening of foreground interlopers, have spectral energy distributions showing a sharp discontinuity around 1.7 um, a flat continuum at 2-5 um, and non-detections at {\textless}1.2 um in the available photometric datasets, all of which are consistent with a z{\textasciitilde}13 galaxy. An ALMA program targeting one of the candidates shows a tentative 4sigma [OIII]88um line at z=13.27, in agreement with its photometric redshift estimate. The number density of the z{\textasciitilde}13 candidates is comparable to that of bright z{\textasciitilde}10 galaxies, and is consistent with a recently proposed double power-law luminosity function rather than the Schechter function, indicating little evolution in the abundance of bright galaxies from z{\textasciitilde}4 to 13. Comparisons with theoretical models show that the models cannot reproduce the bright end of rest-frame ultraviolet luminosity functions at z{\textasciitilde}10-13. Combined with recent studies reporting similarly bright galaxies at z{\textasciitilde}9-11 and mature stellar populations at z{\textasciitilde}6-9, our results indicate the existence of a number of star-forming galaxies at z{\textgreater}10, which will be detected with upcoming space missions such as James Webb Space Telescope, Nancy Grace Roman Space Telescope, and GREX-PLUS.},
urldate = {2022-01-03},
journal = {arXiv:2112.09141 [astro-ph]},
author = {Harikane, Yuichi and Inoue, Akio K. and Mawatari, Ken and Hashimoto, Takuya and Yamanaka, Satoshi and Fudamoto, Yoshinobu and Matsuo, Hiroshi and Tamura, Yoichi and Dayal, Pratika and Yung, L. Y. Aaron and Hutter, Anne and Pacucci, Fabio and Sugahara, Yuma},
month = dec,
year = {2021},
note = {arXiv: 2112.09141},
keywords = {Astrophysics - Astrophysics of Galaxies},
}
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These galaxy candidates, selected after careful screening of foreground interlopers, have spectral energy distributions showing a sharp discontinuity around 1.7 um, a flat continuum at 2-5 um, and non-detections at \\textless1.2 um in the available photometric datasets, all of which are consistent with a z\\textasciitilde13 galaxy. An ALMA program targeting one of the candidates shows a tentative 4sigma [OIII]88um line at z=13.27, in agreement with its photometric redshift estimate. The number density of the z\\textasciitilde13 candidates is comparable to that of bright z\\textasciitilde10 galaxies, and is consistent with a recently proposed double power-law luminosity function rather than the Schechter function, indicating little evolution in the abundance of bright galaxies from z\\textasciitilde4 to 13. Comparisons with theoretical models show that the models cannot reproduce the bright end of rest-frame ultraviolet luminosity functions at z\\textasciitilde10-13. Combined with recent studies reporting similarly bright galaxies at z\\textasciitilde9-11 and mature stellar populations at z\\textasciitilde6-9, our results indicate the existence of a number of star-forming galaxies at z\\textgreater10, which will be detected with upcoming space missions such as James Webb Space Telescope, Nancy Grace Roman Space Telescope, and GREX-PLUS.","urldate":"2022-01-03","journal":"arXiv:2112.09141 [astro-ph]","author":[{"propositions":[],"lastnames":["Harikane"],"firstnames":["Yuichi"],"suffixes":[]},{"propositions":[],"lastnames":["Inoue"],"firstnames":["Akio","K."],"suffixes":[]},{"propositions":[],"lastnames":["Mawatari"],"firstnames":["Ken"],"suffixes":[]},{"propositions":[],"lastnames":["Hashimoto"],"firstnames":["Takuya"],"suffixes":[]},{"propositions":[],"lastnames":["Yamanaka"],"firstnames":["Satoshi"],"suffixes":[]},{"propositions":[],"lastnames":["Fudamoto"],"firstnames":["Yoshinobu"],"suffixes":[]},{"propositions":[],"lastnames":["Matsuo"],"firstnames":["Hiroshi"],"suffixes":[]},{"propositions":[],"lastnames":["Tamura"],"firstnames":["Yoichi"],"suffixes":[]},{"propositions":[],"lastnames":["Dayal"],"firstnames":["Pratika"],"suffixes":[]},{"propositions":[],"lastnames":["Yung"],"firstnames":["L.","Y.","Aaron"],"suffixes":[]},{"propositions":[],"lastnames":["Hutter"],"firstnames":["Anne"],"suffixes":[]},{"propositions":[],"lastnames":["Pacucci"],"firstnames":["Fabio"],"suffixes":[]},{"propositions":[],"lastnames":["Sugahara"],"firstnames":["Yuma"],"suffixes":[]}],"month":"December","year":"2021","note":"arXiv: 2112.09141","keywords":"Astrophysics - Astrophysics of Galaxies","bibtex":"@article{harikane_search_2021,\n\ttitle = {A {Search} for {H}-{Dropout} {Lyman} {Break} {Galaxies} at z{\\textasciitilde}13},\n\turl = {http://arxiv.org/abs/2112.09141},\n\tabstract = {We present two bright galaxy candidates at z{\\textasciitilde}13 identified in our H-dropout Lyman break selection with 2.3 deg{\\textasciicircum}2 near-infrared deep imaging data. These galaxy candidates, selected after careful screening of foreground interlopers, have spectral energy distributions showing a sharp discontinuity around 1.7 um, a flat continuum at 2-5 um, and non-detections at {\\textless}1.2 um in the available photometric datasets, all of which are consistent with a z{\\textasciitilde}13 galaxy. An ALMA program targeting one of the candidates shows a tentative 4sigma [OIII]88um line at z=13.27, in agreement with its photometric redshift estimate. The number density of the z{\\textasciitilde}13 candidates is comparable to that of bright z{\\textasciitilde}10 galaxies, and is consistent with a recently proposed double power-law luminosity function rather than the Schechter function, indicating little evolution in the abundance of bright galaxies from z{\\textasciitilde}4 to 13. Comparisons with theoretical models show that the models cannot reproduce the bright end of rest-frame ultraviolet luminosity functions at z{\\textasciitilde}10-13. 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