FUV Spectroscopy of the sdOB Primary of the Eclipsing Binary System AA Dor
Johannes Fleig (1), Thomas Rauch (1), Klaus Werner (1), Jeffrey W., Kruk (2) ((1)Institute for Astronomy, Astrophysic, Kepler Center for Astro, and Particle Physics, Eberhard Karls University, T\"ubingen, Germany, (2), Department of Physics, Astronomy, Johns Hopkins University
TL;DR
This study uses FUV spectroscopy to analyze the sdOB primary star of the eclipsing binary AA Dor, carefully modeling interstellar absorption to accurately determine its stellar parameters.
Contribution
It provides a detailed spectral analysis of AA Dor's primary star using FUSE data, incorporating interstellar absorption modeling for precise parameter estimation.
Findings
Successful modeling of stellar and interstellar absorption in FUV spectra.
Precise determination of the primary star's photospheric parameters.
Enhanced understanding of the spectral characteristics of sdOB stars in binary systems.
Abstract
AA Dor is an eclipsing, close, post common-envelope binary (PCEB). We present a detailed spectral analysis of its sdOB primary star based on observations obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE). Due to a strong contamination by interstellar absorption, we had to model both, the stellar spectrum as well as the interstellar line absorption in order to reproduce the FUV observation well and to determine the photospheric parameters precisely.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Astronomical Observations and Instrumentation