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Synergies between Massive Stars and Metal-poor Dwarf Irregular Galaxies

Published online by Cambridge University Press:  30 October 2019

Miriam Garcia Open the ORCID record for Miriam Garcia [Opens in a new window] ,
Artemio Herrero ,
Francisco Najarro ,
Norberto Castro  and
Inés Camacho
Miriam Garcia
Affiliation:
Centro de Astrobiologa (CSIC-INTA), Crtra. de Torrejón a Ajalvir km 4, 28850 Torrejón de Ardoz (Madrid), Spain email: mgg@cab.inta-csic.es
Artemio Herrero
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38200 La Laguna (S.C. Tenerife), Spain Departamento de Astrofísica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, E-38071 La Laguna (S.C. Tenerife), Spain
Francisco Najarro
Affiliation:
Centro de Astrobiologa (CSIC-INTA), Crtra. de Torrejón a Ajalvir km 4, 28850 Torrejón de Ardoz (Madrid), Spain email: mgg@cab.inta-csic.es
Norberto Castro
Affiliation:
Department of Astronomy, University of Michigan, 1085 S. University Avenue, Ann Arbor, MI 48109-1107, USA Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
Inés Camacho
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea s/n, E-38200 La Laguna (S.C. Tenerife), Spain Departamento de Astrofísica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez s/n, E-38071 La Laguna (S.C. Tenerife), Spain
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Abstract

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The community of massive stars is working intensively on Local Group dwarf irregular galaxies (dIrr). They are a reservoir of metal-poor massive stars that serve to understand the physics of their higher redshift siblings and population III stars, interpret the farthest, most energetic SNe and GRBs, and compute feedback through Cosmic History. Along the way, we became interested in the recent star-formation history and initial mass-function of the host dIrr’s, their chemical evolution, and gas and dust content. Our team is working to unveil and characterize with spectroscopy the OB-stars in IC 1613, Sextans A and SagDIG, that form a sequence of decreasing metal content. We showcase some results to stimulate synergies between both communities.

Keywords

stars: early-typegalaxies: irregulargalaxies: Local Group
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S344: Dwarf Galaxies: From the Deep Universe to the Present , August 2018 , pp. 178 - 181
Copyright
© International Astronomical Union 2019 

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