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SHELLQs-JWST perspective on the intrinsic mass relation between supermassive black holes and their host galaxies at z > 6

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The relation between the masses of supermassive black holes (SMBHs) and their host galaxies encodes information on their mode of growth, especially at the earliest epochs. The James Webb Space Telescope (JWST) has opened such investigations by detecting the host galaxies of active galactic nuclei (A...

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Hauptverfasser: Silverman, John (VerfasserIn) , Li, Junyao (VerfasserIn) , Ding, Xuheng (VerfasserIn) , Onoue, Masafusa (VerfasserIn) , Strauss, Michael A. (VerfasserIn) , Matsuoka, Yoshiki (VerfasserIn) , Izumi, Takuma (VerfasserIn) , Jahnke, Knud (VerfasserIn) , Treu, Tommaso (VerfasserIn) , Volonteri, Marta (VerfasserIn) , Phillips, Camryn L. (VerfasserIn) , Andika, Irham T. (VerfasserIn) , Aoki, Kentaro (VerfasserIn) , Arita, Junya (VerfasserIn) , Baba, Shunsuke (VerfasserIn) , Bosman, Sarah (VerfasserIn) , Eilers, Anna-Christina (VerfasserIn) , Fan, Xiaohui (VerfasserIn) , Fujimoto, Seiji (VerfasserIn) , Habouzit, Melanie (VerfasserIn) , Haiman, Zoltan (VerfasserIn) , Imanishi, Masatoshi (VerfasserIn) , Inayoshi, Kohei (VerfasserIn) , Iwasawa, Kazushi (VerfasserIn) , Kashikawa, Nobunari (VerfasserIn) , Kawaguchi, Toshihiro (VerfasserIn) , Lee, Chien-Hsiu (VerfasserIn) , Lupi, Alessandro (VerfasserIn) , Nagao, Tohru (VerfasserIn) , Schindler, Jan-Torge (VerfasserIn) , Schramm, Malte (VerfasserIn) , Shimasaku, Kazuhiro (VerfasserIn) , Toba, Yoshiki (VerfasserIn) , Trakhtenbrot, Benny (VerfasserIn) , Umehata, Hideki (VerfasserIn) , Vestergaard, Marianne (VerfasserIn) , Walter, Fabian (VerfasserIn) , Wang, Feige (VerfasserIn) , Yang, Jinyi (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2025 December 20
In: The astrophysical journal. Part 2, Letters
Year: 2025, Jahrgang: 995, Heft: 2, Pages: 1-10
ISSN:2041-8213
DOI:10.3847/2041-8213/ae279c
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.3847/2041-8213/ae279c
Volltext
Verfasserangaben:John David Silverman, Junyao Li, Xuheng Ding, Masafusa Onoue, Michael A. Strauss, Yoshiki Matsuoka, Takuma Izumi, Knud Jahnke, Tommaso Treu, Marta Volonteri, Camryn L. Phillips, Irham T. Andika, Kentaro Aoki, Junya Arita, Shunsuke Baba, Sarah E. I. Bosman, Anna-Christina Eilers, Xiaohui Fan, Seiji Fujimoto, Melanie Habouzit, Zoltan Haiman, Masatoshi Imanishi, Kohei Inayoshi, Kazushi Iwasawa, Nobunari Kashikawa, Toshihiro Kawaguchi, Chien-Hsiu Lee, Alessandro Lupi, Tohru Nagao, Jan-Torge Schindler, Malte Schramm, Kazuhiro Shimasaku, Yoshiki Toba, Benny Trakhtenbrot, Hideki Umehata, Marianne Vestergaard, Fabian Walter, Feige Wang, and Jinyi Yang
Beschreibung
Zusammenfassung:The relation between the masses of supermassive black holes (SMBHs) and their host galaxies encodes information on their mode of growth, especially at the earliest epochs. The James Webb Space Telescope (JWST) has opened such investigations by detecting the host galaxies of active galactic nuclei (AGN) and more luminous quasars within the first billion years of the Universe (z ≳ 6). Here, we evaluate the relation between the mass of SMBHs and the total stellar mass of their host galaxies using a sample of nine quasars at 6.18 ≤ z ≤ 6.4 from the Subaru High-z Exploration of Low-luminosity Quasars survey with NIRCam and NIRSpec observations. We find that the observed location of these quasars in the SMBH-galaxy mass plane (-9; -11) is consistent with a nonevolving intrinsic mass relation with dispersion ( dex) higher than the local value (∼0.3-0.4 dex) of their more massive descendants. Our analysis is based on a forward model of systematics and includes a consideration of the impact of selection effects and measurement uncertainties with an assumption on the slope of the mass relation. While degeneracies between parameters persist, the best-fit solution has a reasonable AGN fraction (2.3%) of galaxies at z ∼ 6 with an actively growing UV-unobscured black hole. In particular, models with a substantially higher normalisation in MBH would require an unrealistically low intrinsic dispersion (∼0.22 dex). Consequently, our results predict a large population of AGN at lower black hole masses, as are now just starting to be discovered in focused efforts with JWST.
Beschreibung:Veröffentlicht: 17. Dezember 2025
Gesehen am 20.02.2026
Beschreibung:Online Resource
ISSN:2041-8213
DOI:10.3847/2041-8213/ae279c

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