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SPAMMS: applications and use cases for the 3D spectroscopic analysis technique to study deformed massive stars

Published online by Cambridge University Press:  29 August 2024

Michael Abdul-Masih Open the ORCID record for Michael Abdul-Masih [Opens in a new window]
Michael Abdul-Masih*
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
*
email: [email protected]
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Abstract

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Whether it be due to rapid rotation or binary interactions, deviations from spherical symmetry are common in massive stars. These deviations from spherical symmetry are known to cause non-uniform distributions of various parameters across the surface including temperature, which can drive internal mixing processes within the envelopes of these massive stars. Despite how common these 3D distortions are, they are often neglected in spectroscopic analyses. We present a new spectral analysis code called spamms (Spectroscopic PAtch Model for Massive Stars) specifically designed to analyze non-spherical systems. We discuss how the code works and discuss its assumptions. Furthermore, we demonstrate how spamms can be applied to a variety of different types of systems and we show how it can model 3D effects in a way that current analysis techniques are not able to.

Keywords

techniques: spectroscopicstars: rotationstars: fundamental parametersstars: abundancesbinaries: close
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 157 - 162
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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