Signatures of unresolved binaries in stellar spectra: implications for spectral fitting
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El-Badry, Kareem; Rix, Hans-Walter; Ting, Yuan; Weisz, Daniel R; Bergemann, Maria; Cargile, Phillip; Conroy, Charlie; Eilers, Anna-Christina
Description
The observable spectrum of an unresolved binary star system is a superposition of two single-star spectra. Even without a detectable velocity offset between the two stellar components, the combined spectrum of a binary system is in general different from that of either component, and fitting it with single-star models may yield inaccurate stellar parameters and abundances. We perform simple experiments with synthetic spectra to investigate the effect of unresolved main-sequence binaries on...[Show more]
Collections | ANU Research Publications |
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Date published: | 2018 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/160563 |
Source: | Monthly Notices of the Royal Astronomical Society |
DOI: | 10.1093/mnras/stx2758 |
Access Rights: | Open Access |
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File | Description | Size | Format | Image |
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01_El-Badry_Signatures_of_unresolved_2018.pdf | 1.58 MB | Adobe PDF |
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