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ASSESSing evolved massive stars in NGC 6822 and IC 10

Published online by Cambridge University Press:  29 August 2024

G. Munoz-Sanchez Open the ORCID record for G. Munoz-Sanchez [Opens in a new window] ,
G. Maravelias Open the ORCID record for G. Maravelias [Opens in a new window] ,
A. Z. Bonanos Open the ORCID record for A. Z. Bonanos [Opens in a new window] ,
F. Tramper Open the ORCID record for F. Tramper [Opens in a new window] ,
S. de Wit Open the ORCID record for S. de Wit [Opens in a new window]  and
M. Yang
G. Munoz-Sanchez*
Affiliation:
IASSARS, National Observatory of Athens, Athens, Greece National and Kapodistrian University of Athens, Athens, Greece
G. Maravelias
Affiliation:
IASSARS, National Observatory of Athens, Athens, Greece Institute of Astrophysics, FORTH, Heraklion, Greece
A. Z. Bonanos
Affiliation:
IASSARS, National Observatory of Athens, Athens, Greece
F. Tramper
Affiliation:
Institute of Astronomy, KU Leuven, Belgium
S. de Wit
Affiliation:
IASSARS, National Observatory of Athens, Athens, Greece National and Kapodistrian University of Athens, Athens, Greece
M. Yang
Affiliation:
IASSARS, National Observatory of Athens, Athens, Greece Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, People’s Republic of China
*
email: gonzalom@noa.gr
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Abstract

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The role of mass loss from massive stars, especially episodic mass loss, is one of the outstanding open questions facing stellar evolution theory. Multiple lines of evidence are pointing to violent, episodic mass-loss events being responsible for removing a large part of the massive stellar envelope, especially in low-metallicity galaxies. The ERC ASSESS project aims to determine whether episodic mass loss is a dominant process in the evolution of the most massive stars by conducting the first extensive, multi-wavelength survey of evolved massive stars in the nearby Universe. The project hinges on the fact that mass-losing stars form dust and are bright in the mid-infrared. We aim to investigate the properties of evolved targets in nearby galaxies and estimate the amount of ejected mass, which will constrain evolutionary models. In this work we present some of our first observational results from the galaxies NGC 6822 and IC 10 obtained with OSIRIS (GTC).

Keywords

stars: mass lossstars: winds and outflowscircumstellar matter
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 432 - 434
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union
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