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The Impact of Encounters on the Members of Local Group Analogs. A View from GALEX

  • Lucio M. Buson
  • Daniela Bettoni
  • Luciana Bianchi
  • Alberto Buzzoni
  • Antonietta Marino
  • Roberto Rampazzo
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

Summary

The bright galaxy population of the Local Group Analog (LGA) LGG 225 has been imaged with the Galaxy Evolution Explorer (GALEX) through its Far- and Near-UV wavebands. A significant fraction of the group members appear to underwent recent/on-going interaction episodes that strongly disturbed overall galaxy morphology. UV-bright regions, sites of intense star formation activity accompanied by intense dust extinction, mark the galaxy outskirts forming irregular structures and tails. Compared to the Local Group, LGG 225 seems thus to be experiencing a more intense and active evolutionary phase.

Keywords

Star Formation Stellar Population Galaxy Evolution Stellar Velocity Dispersion Interaction Episode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York 2009

Authors and Affiliations

  • Lucio M. Buson
    • 1
  • Daniela Bettoni
    • 1
  • Luciana Bianchi
    • 2
  • Alberto Buzzoni
    • 3
  • Antonietta Marino
    • 1
  • Roberto Rampazzo
    • 1
  1. 1.INAF - Osservatorio Astronomico di PadovaPadovaItaly
  2. 2.Department of Physics and AstronomyJohns Hopkins UniversityBaltimore
  3. 3.INAF - Osservatorio Astronomico di BolognaBolognaItaly

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