Spectral disentangling with Spectangular

TL;DR

Spectangular is a software tool that performs spectral disentangling of binary star systems using singular value decomposition and global optimization, demonstrated on artificial and real data, with a user-friendly GUI.

Contribution

The paper presents Spectangular, a novel spectral disentangling software featuring global optimization and a GUI, capable of analyzing SB1 and SB2 systems including telluric lines.

Findings

Effective disentangling demonstrated on artificial data.

Successful application to high-resolution spectra of Capella.

Enhanced usability with GUI and global optimization.

Abstract

The paper introduces the software Spectangular for spectral disentangling via singular value decomposition with global optimisation of the orbital parameters of the stellar system or radial velocities of the individual observations. We will describe the procedure and the different options implemented in our program. Furthermore, we will demonstrate the performance and the applicability using tests on artificial data. Additionally, we use high-resolution spectra of Capella to demonstrate the performance of our code on real-world data. The novelty of this package is the implemented global optimisation algorithm and the graphical user interface (GUI) for ease of use. We have implemented the code to tackle SB1 and SB2 systems with the option of also dealing with telluric (static) lines.