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Searching for self-enrichment in Cygnus OB2

Published online by Cambridge University Press:  28 July 2017

Sara R. Berlanas ,
Artemio Herrero ,
Fernando Comerón ,
Anna Pasquali  and
Sergio Simón-Díaz
Sara R. Berlanas
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
Artemio Herrero
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
Fernando Comerón
Affiliation:
ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
Anna Pasquali
Affiliation:
Astronomisches Rechen-Institut, Zentrum fr Astronomie der Universität Heidelberg, Mönchhofstr 1214, 69120 Heidelberg, Germany
Sergio Simón-Díaz
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain
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Cygnus OB2 is a rich and relatively close (d~1.4 kpc) OB association in our Galaxy. It represents an ideal testbed for our theories about self-enrichment processes produced by pollution of the interstellar medium by successive generations of massive stars. Comerón & Pasquali (2012, A&A, 543, A101) found a correlation between the age of young stellar groups in Cygnus OB2 and their Galactic longitude. If is associated with a chemical composition gradient, it could support these self-enrichment processes.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S329: The Lives and Death-Throes of Massive Stars , November 2016 , pp. 386
Copyright
Copyright © International Astronomical Union 2017