Physical Classification of Galaxies with MOPED/VESPA

Raul Jimenez, Alan F. Heavens, Ben Panter, Rita Tojeiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The availability of high-quality spectra for a large number of galaxies in the SDSS survey allows for a more sophisticated extraction of information about their stellar populations than, e.g., the luminosity weighted age. Indeed, sophisticated and robust techniques to fully analyze galaxy spectra have now reached enough maturity as to trust their results and findings. By reconstructing the star formation and metallicity history of galaxies from the SDSS fossil record and analyzing how it relates to its environment, we have learned how to classify galaxies: to first order the evolution of a galaxy is determined by its present stellar mass, which in turn seems to be governed by the merger rate of dark halos.

Original languageEnglish
Title of host publicationCLASSIFICATION AND DISCOVERY IN LARGE ASTRONOMICAL SURVEYS
EditorsCAL BailerJones
Place of PublicationMELVILLE
PublisherAmerican Institute of Physics
Pages92-98
Number of pages7
ISBN (Print)978-0-7354-0613-1
Publication statusPublished - 2008
EventInternational Conference on Classification and Discovery in Large Astronomical Surveys - Ringberg Castle
Duration: 14 Oct 200817 Oct 2008

Conference

ConferenceInternational Conference on Classification and Discovery in Large Astronomical Surveys
CityRingberg Castle
Period14/10/0817/10/08

Keywords

  • galaxies: classification
  • galaxies: formation and evolution
  • DIGITAL SKY SURVEY
  • STAR-FORMATION HISTORIES
  • DARK GALAXIES
  • SPECTRA

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