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Circumgalactic gas absorption in extremely metal-poor dwarf dalaxies

Published online by Cambridge University Press:  21 March 2017

M. E. Filho ,
J. Sánchez Almeida  and
C. Muñoz Tuñón
M. E. Filho
Affiliation:
Instituto Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
J. Sánchez Almeida
Affiliation:
Instituto Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
C. Muñoz Tuñón
Affiliation:
Instituto Astrofísica de Canarias, 38200 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
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Abstract

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Accretion of metal-poor gas via cold accretion flows has been recently proposed as a means to trigger/sustain star formation in extremely metal-poor dwarf galaxies (XMPs), a scenario in agreement with theoretical predictions. We report on the tentative detection of CaII absorption used to trace the conditions of the gas clouds in the halo of the XMP UGCA 20.

Keywords

galaxies: evolutiongalaxies: halosgalaxies: dwarf
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 287
Copyright
Copyright © International Astronomical Union 2017 

References

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