ASSESSing evolved massive stars in NGC 6822 and IC 10

G. Munoz-Sanchez; G. Maravelias; A. Z. Bonanos; F. Tramper; S. de Wit; M. Yang

doi:10.1017/S1743921322003155

ASSESSing evolved massive stars in NGC 6822 and IC 10

Published online by Cambridge University Press: 29 August 2024

and

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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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 loss stars: winds and outflows circumstellar 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

DOI: https://doi.org/10.1017/S1743921322003155 [Opens in a new window]

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Creative Commons: 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.