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BEGIN:VEVENT
SUMMARY:A Scaling Relation of “Little Red Dots” between Halpha and Bol
 ometric  Luminosities: Enhanced Halpha Emission Relative to Low-z Type 1 A
 GNs
DTSTART;VALUE=DATE-TIME:20260715T073500Z
DTEND;VALUE=DATE-TIME:20260715T075000Z
DTSTAMP;VALUE=DATE-TIME:20260720T190552Z
UID:indico-contribution-2500-8982@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Hiroto Yanagisawa ()\nWe investigate the spectroscop
 ic demography of “little red dots” (LRDs) using 37 objects at z~3–7 
 compiled from various JWST programs. We identifiy a tight scaling relation
  between Ha luminosity (L_Ha) and bolometric luminosity (L_bol)\, which is
  enhanced by a factor of ~40 in L _Ha relative to that of low-z type 1 AGN
 . We explore the physical origin of this enhancement based on the classic 
 locally optimally-emitting cloud (LOC) framework\, and find that it can be
  explained by an increase in the broad line region (BLR) covering factor f
 rom ~20% (Type 1 AGN) to ~100% (LRDs)\, together with an increase in the h
 ydrogen column density from N_H~10^23 cm−2 to >10^24 cm−2.\n\nhttps://
 indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8982/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8982/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Statistical Rethinking: overmassive blackhole at high-z universe
DTSTART;VALUE=DATE-TIME:20260715T080500Z
DTEND;VALUE=DATE-TIME:20260715T082000Z
DTSTAMP;VALUE=DATE-TIME:20260720T190552Z
UID:indico-contribution-2500-8984@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Chenghao Zhu ()\nWe will present a statistical rethi
 nking of the phenomenon that the AGN in the high-z universe tends to have 
 overmassive black holes. The result will be revisited in the aspect of bot
 h more stable statistical index and more sources.\n\nhttps://indico.icrr.u
 -tokyo.ac.jp/event/1254/contributions/8984/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8984/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Early Chemical Enrichment in UV-Bright Galaxies at the Epoch of Re
 ionization Probed by JWST Absorption-Line Analysis
DTSTART;VALUE=DATE-TIME:20260715T075000Z
DTEND;VALUE=DATE-TIME:20260715T080500Z
DTSTAMP;VALUE=DATE-TIME:20260720T190552Z
UID:indico-contribution-2500-8983@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Minami Nakane ()\nUsing JWST/NIRSpec medium-resoluti
 on spectra of UV-bright\ngalaxies at z=7.2-10.6\, we investigate interstel
 lar absorption lines to\nprobe the physical properties of mostly neutral g
 as and the early\nchemical enrichment of galaxies during the epoch of reio
 nization.\n\nhttps://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/89
 83/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8983/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cosmic Reionization and Cosmological Parameters
DTSTART;VALUE=DATE-TIME:20260715T072000Z
DTEND;VALUE=DATE-TIME:20260715T073500Z
DTSTAMP;VALUE=DATE-TIME:20260720T190552Z
UID:indico-contribution-2500-8981@indico.icrr.u-tokyo.ac.jp
DESCRIPTION:Speakers: Yuta Kageura ()\nJWST observations of high-redshift 
 galaxies have greatly advanced our understanding of cosmic reionization. S
 ince reionization affects the CMB\, I will present our recent results on c
 onstraining cosmological parameters using these galaxy observations.\n\nht
 tps://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8981/
LOCATION:Kashiwa Large Seminar Room 601 (Kashiwa)
URL:https://indico.icrr.u-tokyo.ac.jp/event/1254/contributions/8981/
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