{"publication":"Nature Astronomy","isi":1,"citation":{"ama":"Onoue M, Ding X, Silverman JD, et al. A post-starburst pathway for the formation of massive galaxies and black holes at z &#62; 6. <i>Nature Astronomy</i>. 2025. doi:<a href=\"https://doi.org/10.1038/s41550-025-02628-1\">10.1038/s41550-025-02628-1</a>","short":"M. Onoue, X. Ding, J.D. Silverman, Y. Matsuoka, T. Izumi, M.A. Strauss, C. Ward, C.L. Phillips, K. Ito, I.T. Andika, K. Aoki, J. Arita, S. Baba, R. Bieri, S.E.I. Bosman, A.C. Eilers, S. Fujimoto, M. Habouzit, Z. Haiman, M. Imanishi, K. Inayoshi, K. Iwasawa, K. Jahnke, N. Kashikawa, T. Kawaguchi, K. Kohno, C.H. Lee, J. Li, A. Lupi, J. Lyu, T. Nagao, R. Overzier, J.T. Schindler, M. Schramm, M.T. Scoggins, K. Shimasaku, Y. Toba, B. Trakhtenbrot, M. Trebitsch, T. Treu, H. Umehata, B. Venemans, M. Vestergaard, M. Volonteri, F. Walter, F. Wang, J. Yang, H. Zhang, Nature Astronomy (2025).","ieee":"M. Onoue <i>et al.</i>, “A post-starburst pathway for the formation of massive galaxies and black holes at z &#62; 6,” <i>Nature Astronomy</i>. Springer Nature, 2025.","ista":"Onoue M, Ding X, Silverman JD, Matsuoka Y, Izumi T, Strauss MA, Ward C, Phillips CL, Ito K, Andika IT, Aoki K, Arita J, Baba S, Bieri R, Bosman SEI, Eilers AC, Fujimoto S, Habouzit M, Haiman Z, Imanishi M, Inayoshi K, Iwasawa K, Jahnke K, Kashikawa N, Kawaguchi T, Kohno K, Lee CH, Li J, Lupi A, Lyu J, Nagao T, Overzier R, Schindler JT, Schramm M, Scoggins MT, Shimasaku K, Toba Y, Trakhtenbrot B, Trebitsch M, Treu T, Umehata H, Venemans B, Vestergaard M, Volonteri M, Walter F, Wang F, Yang J, Zhang H. 2025. A post-starburst pathway for the formation of massive galaxies and black holes at z &#62; 6. Nature Astronomy.","chicago":"Onoue, Masafusa, Xuheng Ding, John D. Silverman, Yoshiki Matsuoka, Takuma Izumi, Michael A. Strauss, Charlotte Ward, et al. “A Post-Starburst Pathway for the Formation of Massive Galaxies and Black Holes at z &#62; 6.” <i>Nature Astronomy</i>. Springer Nature, 2025. <a href=\"https://doi.org/10.1038/s41550-025-02628-1\">https://doi.org/10.1038/s41550-025-02628-1</a>.","apa":"Onoue, M., Ding, X., Silverman, J. D., Matsuoka, Y., Izumi, T., Strauss, M. A., … Zhang, H. (2025). A post-starburst pathway for the formation of massive galaxies and black holes at z &#62; 6. <i>Nature Astronomy</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41550-025-02628-1\">https://doi.org/10.1038/s41550-025-02628-1</a>","mla":"Onoue, Masafusa, et al. “A Post-Starburst Pathway for the Formation of Massive Galaxies and Black Holes at z &#62; 6.” <i>Nature Astronomy</i>, Springer Nature, 2025, doi:<a href=\"https://doi.org/10.1038/s41550-025-02628-1\">10.1038/s41550-025-02628-1</a>."},"scopus_import":"1","status":"public","language":[{"iso":"eng"}],"department":[{"_id":"ZoHa"}],"month":"08","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2409.07113"}],"year":"2025","OA_type":"green","author":[{"first_name":"Masafusa","last_name":"Onoue","full_name":"Onoue, Masafusa"},{"first_name":"Xuheng","last_name":"Ding","full_name":"Ding, Xuheng"},{"last_name":"Silverman","full_name":"Silverman, John D.","first_name":"John D."},{"last_name":"Matsuoka","full_name":"Matsuoka, Yoshiki","first_name":"Yoshiki"},{"first_name":"Takuma","last_name":"Izumi","full_name":"Izumi, Takuma"},{"first_name":"Michael A.","full_name":"Strauss, Michael A.","last_name":"Strauss"},{"full_name":"Ward, Charlotte","last_name":"Ward","first_name":"Charlotte"},{"first_name":"Camryn L.","last_name":"Phillips","full_name":"Phillips, Camryn L."},{"first_name":"Kei","last_name":"Ito","full_name":"Ito, Kei"},{"first_name":"Irham T.","last_name":"Andika","full_name":"Andika, Irham T."},{"first_name":"Kentaro","last_name":"Aoki","full_name":"Aoki, Kentaro"},{"full_name":"Arita, Junya","last_name":"Arita","first_name":"Junya"},{"last_name":"Baba","full_name":"Baba, Shunsuke","first_name":"Shunsuke"},{"full_name":"Bieri, Rebekka","last_name":"Bieri","first_name":"Rebekka"},{"full_name":"Bosman, Sarah E.I.","last_name":"Bosman","first_name":"Sarah E.I."},{"full_name":"Eilers, Anna Christina","last_name":"Eilers","first_name":"Anna Christina"},{"last_name":"Fujimoto","full_name":"Fujimoto, Seiji","first_name":"Seiji"},{"full_name":"Habouzit, Melanie","last_name":"Habouzit","first_name":"Melanie"},{"first_name":"Zoltán","last_name":"Haiman","id":"7c006e8c-cc0d-11ee-8322-cb904ef76f36","full_name":"Haiman, Zoltán","orcid":"0000-0003-3633-5403"},{"first_name":"Masatoshi","last_name":"Imanishi","full_name":"Imanishi, Masatoshi"},{"first_name":"Kohei","full_name":"Inayoshi, Kohei","last_name":"Inayoshi"},{"first_name":"Kazushi","full_name":"Iwasawa, Kazushi","last_name":"Iwasawa"},{"first_name":"Knud","full_name":"Jahnke, Knud","last_name":"Jahnke"},{"full_name":"Kashikawa, Nobunari","last_name":"Kashikawa","first_name":"Nobunari"},{"full_name":"Kawaguchi, Toshihiro","last_name":"Kawaguchi","first_name":"Toshihiro"},{"last_name":"Kohno","full_name":"Kohno, Kotaro","first_name":"Kotaro"},{"last_name":"Lee","full_name":"Lee, Chien Hsiu","first_name":"Chien Hsiu"},{"full_name":"Li, Junyao","last_name":"Li","first_name":"Junyao"},{"last_name":"Lupi","full_name":"Lupi, Alessandro","first_name":"Alessandro"},{"full_name":"Lyu, Jianwei","last_name":"Lyu","first_name":"Jianwei"},{"first_name":"Tohru","full_name":"Nagao, Tohru","last_name":"Nagao"},{"first_name":"Roderik","last_name":"Overzier","full_name":"Overzier, Roderik"},{"full_name":"Schindler, Jan Torge","last_name":"Schindler","first_name":"Jan Torge"},{"last_name":"Schramm","full_name":"Schramm, Malte","first_name":"Malte"},{"first_name":"Matthew T.","last_name":"Scoggins","full_name":"Scoggins, Matthew T."},{"last_name":"Shimasaku","full_name":"Shimasaku, Kazuhiro","first_name":"Kazuhiro"},{"first_name":"Yoshiki","full_name":"Toba, Yoshiki","last_name":"Toba"},{"full_name":"Trakhtenbrot, Benny","last_name":"Trakhtenbrot","first_name":"Benny"},{"full_name":"Trebitsch, Maxime","last_name":"Trebitsch","first_name":"Maxime"},{"first_name":"Tommaso","last_name":"Treu","full_name":"Treu, Tommaso"},{"last_name":"Umehata","full_name":"Umehata, Hideki","first_name":"Hideki"},{"full_name":"Venemans, Bram","last_name":"Venemans","first_name":"Bram"},{"last_name":"Vestergaard","full_name":"Vestergaard, Marianne","first_name":"Marianne"},{"first_name":"Marta","full_name":"Volonteri, Marta","last_name":"Volonteri"},{"first_name":"Fabian","full_name":"Walter, Fabian","last_name":"Walter"},{"first_name":"Feige","full_name":"Wang, Feige","last_name":"Wang"},{"first_name":"Jinyi","full_name":"Yang, Jinyi","last_name":"Yang"},{"first_name":"Haowen","full_name":"Zhang, Haowen","last_name":"Zhang"}],"abstract":[{"text":"Understanding the rapid formation of supermassive black holes in the early Universe requires insights into stellar mass growth in host galaxies. Here we present NIRSpec rest-frame optical spectra and NIRCam imaging from JWST of two galaxies at z > 6, both hosting moderate-luminosity quasars. These galaxies exhibit Balmer absorption lines, like low-redshift post-starburst galaxies. Our analyses of the medium-resolution spectra and multiband photometry show that the bulk of the stellar mass (log(M*/M☉) ≥ 10.6) formed in starburst episodes at redshift 9 and 7. One of the galaxies shows a clear Balmer break and lacks spatially resolved Hα emission. It falls well below the star-formation main sequence at z = 6, indicating quiescence. The other is transitioning to quiescence; together, these massive galaxies are among the most distant post-starburst systems known. The blueshifted wings of the quasar [O iii] emission lines indicate quasar-driven outflow, which possibly influences star formation. Direct stellar velocity dispersion measurements reveal that one galaxy follows the local black hole mass versus σ* relation whereas the other is overmassive. The existence of massive post-starburst galaxies hosting billion-solar-mass black holes in short-lived quasar phases indicates that supermassive black holes and host galaxies played a principal role in each other’s rapid early formation.","lang":"eng"}],"title":"A post-starburst pathway for the formation of massive galaxies and black holes at z > 6","oa":1,"oa_version":"Preprint","quality_controlled":"1","date_updated":"2025-11-05T13:36:01Z","_id":"20193","external_id":{"arxiv":["2409.07113"],"isi":["001548138600001"]},"OA_place":"repository","doi":"10.1038/s41550-025-02628-1","article_processing_charge":"No","day":"11","type":"journal_article","article_type":"original","date_created":"2025-08-17T22:01:38Z","date_published":"2025-08-11T00:00:00Z","acknowledgement":"We thank A. C. Carnall for supporting our use of Bagpipes. We thank Y. Fu for his help on the use of QSOFitMORE. We thank J. Greene, S. Toft, T. Kakimoto and M. Tanaka for fruitful discussions. This work is based on observations made with the NASA/ESA/CSA JWST. The data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, under NASA contract NAS 5-03127 for JWST. These observations are associated with programmes GO 1967 and GO 3859. Support for these programmes was provided by NASA through a grant from the Space Telescope Science Institute. This work was supported by World Premier International Research Center Initiative, MEXT, Japan. This work used computing resources at Kavli IPMU. M.O., X.D., J.D.S., Y.M., T.I., K. Ito, K.K. and H.U. are supported by the Japan Society for the Promotion of Science (KAKENHI Grant Numbers JP24K22894, JP22K14071, JP18H01251, JP22H01262, JP21H04494, JP20K14531, JP23K13141, JP17H06130 and JP20H01953). M.O. and K. Inayoshi acknowledge support from the National Natural Science Foundation of China (Grant Numbers 12150410307, 12073003, 11721303, 11991052 and 11950410493). K. Inayoshi acknowledges support from the China Manned Space Project (Grant Numbers CMS-CSST-2021-A04 and CMS-CSST-2021-A06). S.E.I.B. is funded by the Deutsche Forschungsgemeinschaft (German Research Foundation) under Emmy Noether Grant Number BO 5771/1-1. Z.H., T.T. and M.S. acknowledge support from the NSF (Grant Numbers AST-2006176, AST-1907208 and AST-2006177). A.L. acknowledges funding from MUR (Grant Number PRIN 2022935STW). B.T. acknowledges support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement Number 950533) and from the Israel Science Foundation (Grant Number 1849/19). F. Walter acknowledges support from the ERC (Grant Cosmic_gas). J.-T.S. is supported by the Deutsche Forschungsgemeinschaft (Project Number 518006966). M.T. acknowledges support from the NWO (Grant Number 0.16.VIDI.189.162, ODIN). S.F. acknowledges support from NASA through the NASA Hubble Fellowship (Grant Number HST-HF2-51505.001-A awarded by the Space Telescope Science Institute). K. Iwasawa acknowledges support under Grant Number PID2022-136827NB-C44 funded by MCIN/AEI/10.13039/501100011033 /FEDER, EU. M. Vestergaard gratefully acknowledges financial support from the Independent Research Fund Denmark (Grant Numbers DFF 8021-00130 and 3103-00146). F. Wang acknowledges support from the NSF (Award Number AST-2513040). R.B. is supported by the SNSF through the Ambizione Grant PZ00P2_223532.","publisher":"Springer Nature","publication_status":"epub_ahead","arxiv":1,"publication_identifier":{"eissn":["2397-3366"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"}