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SUMMARY:SPURS: Insights into UV-luminous galaxies at z>9 from deep R~1000 
 spectroscopy
DTSTART:20261015T060000Z
DTEND:20261015T070000Z
DTSTAMP:20261016T113200Z
UID:indico-event-5358@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Zuyi Chen（陈祖诒）\n\nTitle: SPURS: Insights i
 nto UV-luminous galaxies at z>9 from deep R~1000 spectroscopyTime: 14:00-1
 5:00 (UTC+8)\, 15 October 2026\, Thursday Host: Mengtao TangJoin Tencent 
 Meeting：https://meeting.tencent.com/dm/ODeBvp5Lx3RKMeeting ID: 487967328
  (no password)\nAbstract：JWST observations have provided an unprecedente
 d view of cosmic dawn\, revealing a high number density of UV-luminous gal
 axies\, a shift to more extreme emission lines\, and peculiar\, globular-c
 luster-like nitrogen abundances. However\, characterizing the stellar and 
 ISM properties of individual galaxies at this epoch has remained challengi
 ng due to the low resolution and/or shallow depth of previous spectra\, li
 miting our ability to interpret these discoveries. I will present results 
 from SPURS\, a 200 hr Cycle 4 Large NIRSpec program that obtained the firs
 t extremely deep (29 hr) medium-resolution (R~1000) rest-UV spectra of ear
 ly galaxies. I will show new constraints on galaxy-scale outflows and stel
 lar winds in two UV-luminous galaxies\, SPURS-A2744-7 at z=9.3 and GN-z11 
 at z=10.6. In GN-z11\, we detect rich stellar and gas features\, including
  P-Cygni wind profiles\, broad He II\, N IV] and Lya emission\, fluorescen
 t O I* emission\, and weak low-ionization absorption. I will discuss how t
 hese features may be providing our first view of a low-metallicity very ma
 ssive star (VMS\, >100 Msun) population at z>10\, potentially building the
  dense nuclear region and the surrounding clusters in a burst of star form
 ation. These spectra offer new insights into bursty star formation at such
  early epochs\, with implications for nitrogen enrichment and the seeding 
 of intermediate-mass black holes.\nBiography:Zuyi Chen (陈祖诒) is a po
 stdoctoral researcher at the Cosmic Dawn Center (DAWN) / Niels Bohr Instit
 ute\, University of Copenhagen. His research focuses on observational cons
 traints on early galaxy formation and how best to use these galaxies as pr
 obes of cosmic reionization. He received his B.S. from the University of S
 cience and Technology of China in 2019 and Ph.D. from the University of Ar
 izona in 2025.\n\n\nhttps://indico-tdli.sjtu.edu.cn/event/5358/
LOCATION:Tsung-Dao Lee Institute/S4F-SW - Open Area (Tsung-Dao Lee Institu
 te)
URL:https://indico-tdli.sjtu.edu.cn/event/5358/
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