{"status":"public","year":"2025","date_created":"2025-07-20T22:02:01Z","article_processing_charge":"Yes","month":"07","acknowledgement":"We thank the referee for the feedback and suggestions that greatly improved the quality of this manuscript. We would like to thank Carlos Contreras, Matías Díaz, Carla Fuentes, Mauricio Martínez, Alberto Pastén, Roger Leiton, Hugo Rivera, and Gabriel Prieto for their help and support during the Magellan/FIRE observations. We would also like to thank Rongmon Bordoloi for helpful discussions. R.A.M. acknowledges support from the Swiss National Science Foundation (SNSF) through project grant 200020_207349. This Letter includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile.\r\nBased on observations collected at the European Southern Observatory under ESO programs 106.215A and 096.A-0418.\r\n\r\nThe HST data presented in this Letter were obtained from the Mikulski Archive for Space Telescopes (MAST) at the Space Telescope Science Institute. The observations analyzed in this work can be accessed via doi:10.17909/gxmz-zd87.","doi":"10.3847/2041-8213/ade71c","publication_status":"published","day":"10","_id":"20030","quality_controlled":"1","arxiv":1,"author":[{"first_name":"Dominika","last_name":"Ďurovčíková","full_name":"Ďurovčíková, Dominika"},{"first_name":"Anna Christina","full_name":"Eilers, Anna Christina","last_name":"Eilers"},{"last_name":"Simcoe","full_name":"Simcoe, Robert A.","first_name":"Robert A."},{"first_name":"Louise","last_name":"Welsh","full_name":"Welsh, Louise"},{"first_name":"Romain A.","last_name":"Meyer","full_name":"Meyer, Romain A."},{"orcid":"0000-0003-2871-127X","id":"7439a258-f3c0-11ec-9501-9df22fe06720","first_name":"Jorryt J","full_name":"Matthee, Jorryt J","last_name":"Matthee"},{"first_name":"Emma V.","last_name":"Ryan-Weber","full_name":"Ryan-Weber, Emma V."},{"full_name":"Yue, Minghao","last_name":"Yue","first_name":"Minghao"},{"last_name":"Katz","full_name":"Katz, Harley","first_name":"Harley"},{"first_name":"Sindhu","full_name":"Satyavolu, Sindhu","last_name":"Satyavolu"},{"first_name":"George","last_name":"Becker","full_name":"Becker, George"},{"first_name":"Frederick B.","last_name":"Davies","full_name":"Davies, Frederick B."},{"first_name":"Emanuele Paolo","full_name":"Farina, Emanuele Paolo","last_name":"Farina"}],"intvolume":"       987","publisher":"IOP Publishing","external_id":{"arxiv":["2505.01499"]},"language":[{"iso":"eng"}],"type":"journal_article","has_accepted_license":"1","article_type":"original","OA_place":"publisher","oa_version":"Published Version","issue":"2","article_number":"L33","file":[{"date_created":"2025-07-22T08:38:14Z","access_level":"open_access","relation":"main_file","file_size":6453728,"date_updated":"2025-07-22T08:38:14Z","creator":"dernst","file_name":"2025_AstrophysicalJourLetters_Durovcikova.pdf","checksum":"75d0c08514209fc6e3078fdec8e815a2","content_type":"application/pdf","file_id":"20066","success":1}],"ddc":["520"],"scopus_import":"1","volume":987,"date_published":"2025-07-10T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","image":"/images/cc_by.png","short":"CC BY (4.0)"},"OA_type":"gold","publication_identifier":{"eissn":["2041-8213"],"issn":["2041-8205"]},"PlanS_conform":"1","department":[{"_id":"JoMa"}],"title":"An extremely metal-poor Lyα emitter candidate at z = 6 revealed through absorption spectroscopy","date_updated":"2025-07-22T08:40:50Z","publication":"Astrophysical Journal Letters","file_date_updated":"2025-07-22T08:38:14Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"DOAJ_listed":"1","citation":{"ista":"Ďurovčíková D, Eilers AC, Simcoe RA, Welsh L, Meyer RA, Matthee JJ, Ryan-Weber EV, Yue M, Katz H, Satyavolu S, Becker G, Davies FB, Farina EP. 2025. An extremely metal-poor Lyα emitter candidate at z = 6 revealed through absorption spectroscopy. Astrophysical Journal Letters. 987(2), L33.","ama":"Ďurovčíková D, Eilers AC, Simcoe RA, et al. An extremely metal-poor Lyα emitter candidate at z = 6 revealed through absorption spectroscopy. <i>Astrophysical Journal Letters</i>. 2025;987(2). doi:<a href=\"https://doi.org/10.3847/2041-8213/ade71c\">10.3847/2041-8213/ade71c</a>","chicago":"Ďurovčíková, Dominika, Anna Christina Eilers, Robert A. Simcoe, Louise Welsh, Romain A. Meyer, Jorryt J Matthee, Emma V. Ryan-Weber, et al. “An Extremely Metal-Poor Lyα Emitter Candidate at z = 6 Revealed through Absorption Spectroscopy.” <i>Astrophysical Journal Letters</i>. IOP Publishing, 2025. <a href=\"https://doi.org/10.3847/2041-8213/ade71c\">https://doi.org/10.3847/2041-8213/ade71c</a>.","mla":"Ďurovčíková, Dominika, et al. “An Extremely Metal-Poor Lyα Emitter Candidate at z = 6 Revealed through Absorption Spectroscopy.” <i>Astrophysical Journal Letters</i>, vol. 987, no. 2, L33, IOP Publishing, 2025, doi:<a href=\"https://doi.org/10.3847/2041-8213/ade71c\">10.3847/2041-8213/ade71c</a>.","apa":"Ďurovčíková, D., Eilers, A. C., Simcoe, R. A., Welsh, L., Meyer, R. A., Matthee, J. J., … Farina, E. P. (2025). An extremely metal-poor Lyα emitter candidate at z = 6 revealed through absorption spectroscopy. <i>Astrophysical Journal Letters</i>. IOP Publishing. <a href=\"https://doi.org/10.3847/2041-8213/ade71c\">https://doi.org/10.3847/2041-8213/ade71c</a>","ieee":"D. Ďurovčíková <i>et al.</i>, “An extremely metal-poor Lyα emitter candidate at z = 6 revealed through absorption spectroscopy,” <i>Astrophysical Journal Letters</i>, vol. 987, no. 2. IOP Publishing, 2025.","short":"D. Ďurovčíková, A.C. Eilers, R.A. Simcoe, L. Welsh, R.A. Meyer, J.J. Matthee, E.V. Ryan-Weber, M. Yue, H. Katz, S. Satyavolu, G. Becker, F.B. Davies, E.P. Farina, Astrophysical Journal Letters 987 (2025)."},"abstract":[{"text":"We report the discovery of a Lyα emitter (LAE) candidate in the immediate foreground of the quasar PSO J158-14 at zQSO = 6.0685 at a projected distance ∼29 pkpc that is associated with an extremely metal-poor absorption system. This system was found in archival observations of the quasar field with the Very Large Telescope (VLT)/Multi-Unit Spectroscopic Explorer (MUSE) and was previously missed in searches of absorption systems using quasar absorption line spectroscopy, as it imparts no detectable metal absorption lines on the background quasar spectrum. The detected Lyα emission line at a redshift of zLAE = 6.0323 is well aligned with the outer edge of the quasar’s proximity zone and can plausibly cause its observed damping wing if it is associated with a proximate subdamped Lyα absorption system with a column density of log Nhi/cm^-2 19.7. A >10 hr medium-resolution spectrum of the quasar observed with the Magellan/Folded-port InfraRed Echellette (FIRE) and VLT/X-Shooter spectrographs reveals a metallicity constraint of [Z/H] < −3. Such low metallicity makes this system an extremely metal-poor galaxy candidate and provides an exciting site to study possible signatures of Population III stars.","lang":"eng"}]}