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BOSS-3D: A Binary Object Spectral Synthesis Code in 3D

Published online by Cambridge University Press:  30 November 2022

L. Hennicker Open the ORCID record for L. Hennicker [Opens in a new window] ,
N. D. Kee ,
T. Shenar ,
J. Bodensteiner ,
M. Abdul-Masih ,
I. El Mellah Open the ORCID record for I. El Mellah [Opens in a new window] ,
H. Sana Open the ORCID record for H. Sana [Opens in a new window]  and
J. O. Sundqvist Open the ORCID record for J. O. Sundqvist [Opens in a new window]
L. Hennicker
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: levin.hennicker@kuleuven.be
N. D. Kee
Affiliation:
National Solar Observatory, 22 Ohi’a Ku Street, Makawao, HI 96768, USA
T. Shenar
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: levin.hennicker@kuleuven.be Anton Pannekoek Institute for Astronomy, University of Amsterdam, Postbus 94249, 1090 GE Amsterdam, The Netherlands
J. Bodensteiner
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: levin.hennicker@kuleuven.be European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany
M. Abdul-Masih
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
I. El Mellah
Affiliation:
Institut de Planétologie et d’Astrophysique de Grenoble, 414 Rue de la Piscine, 38400 Saint-Martin-d’Hères, France
H. Sana
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: levin.hennicker@kuleuven.be
J. O. Sundqvist
Affiliation:
Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium email: levin.hennicker@kuleuven.be
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Abstract

To decode the information stored within a spectrum, detailed modelling of the physical state is required together with accurate radiative transfer solution schemes. In the analysis of stellar spectra, the numerical model often needs to account for high velocity outflows, multi-dimensional structures, and the effects of binary companions. Focusing now on binary systems, we present the BOSS-3D spectral synthesis code, which is capable of calculating synthetic line profiles for a variety of binary systems. Assuming the state of the circumstellar material to be known, the standard pz-geometry is extended by defining individual coordinate systems for each object. By embedding these coordinate systems within the observer’s frame, BOSS-3D automatically accounts for outflows or discs within both involved systems, and includes all Doppler shifts. Moreover, the code accounts for different length-scales, and thus could also be used to analyse transit-spectra of planetary atmospheres. As a first application of BOSS-3D, we model the phase-dependent line profiles for the enigmatic binary (or multiple) system LB-1.

Keywords

radiative transfermethods: numericalstars: emission-line, Bestars: black holesbinaries: spectroscopic
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S366: The Origin of Outflows in Evolved Stars , November 2020 , pp. 138 - 143
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Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of International Astronomical Union

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