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PRODID:-//Heidelberg University//HePhySTO//EN
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DTEND:20260421T153000Z
UID:69d9810a827282e55e672bf3af52d955@physik.uni-heidelberg.de
DTSTAMP:20260415T233245Z
LOCATION:
DESCRIPTION:Stellar populations preserve a record of galaxies' integrated b
 aryon and metal cycles\, governed by star formation\, metal production and 
 interaction with the surrounding medium. By decoding stellar population pro
 perties from galaxy spectra—the "archaeological approach"— fundamental scal
 ing relations have been uncovered linking stellar ages and chemical abundan
 ces to galaxy mass\, structure\, and dynamics. These scaling relations are 
 benchmarks for galaxy evolution models and provide statistical “demographic
 ” distributions at a given epoch. Extending the archaeological approach to 
 earlier cosmic epochs is essential to disentangle individual evolutionary p
 aths from population evolution and eventually allow a statistical connectio
 n between progenitors and descendants. The intermediate-redshift regime (th
 e last 8 Gyr) is particularly critical: massive early-formed systems coexis
 t with ongoing quenching in lower-mass galaxies\, while all galaxies contin
 ue evolving dynamically\, morphologically\, and chemically. Recent deep spe
 ctroscopic surveys now enable archaeological studies at these earlier epoch
 s\, complementing traditional number density evolution analyses. I will giv
 e an overview of our results constraining stellar population properties fro
 m low-redshift spectroscopic surveys and their dependence on mass\, star fo
 rmation activity\, and environment. I will then discuss how these scaling r
 elations evolve over the last 6 billion years\, as revealed by the LEGA-C s
 urvey. This type of analysis provides a foundation for interpreting archaeo
 logical investigations of galaxies over a continuous span of cosmic time\, 
 as will be obtained from WEAVE\, 4MOST\, MOONS deep spectroscopic surveys\,
  bridging local and higher-redshift studies. To arrange a visit with the sp
 eaker during the visit\, please contact their host: Anna Pasquali\n\nImport
 ed from https://www.physik.uni-heidelberg.de/hephysto/ (no warranty for acc
 uracy).
URL;VALUE=URI:https://www.physik.uni-heidelberg.de/hephysto/index.php?s=tal
 k&id=12462
SUMMARY:Heidelberg Joint Astronomical Colloquium: Anna Gallazzi -  Stellar 
 populations as fossil record of galaxy evolution across half of the cosmic 
 history
DTSTART:20260421T143000Z
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