期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 247, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4365/ab7927
关键词
Eclipsing binary stars; Binary stars; Extinction
资金
- NSF AAG [1517474, 1909109]
- NASA [17ADAP17-68]
- State Research Agency (AEI) of the Spanish Ministry of Science, Innovation and Universities (MCIU)
- European Regional Development Fund (FEDER) [AYA2017-83383-P]
- Spanish Ministry of Science, Innovation and Universities [P/308614]
- General Budgets of the Autonomous Community of the Canary Islands by the Ministry of Economy, Industry, Trade and Knowledge
- Polish National Center for Science (NCN) [2015/18/A/ST9/00578]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1909109, 1517474] Funding Source: National Science Foundation
Traditionally, the effects of interstellar extinction on binary star light curves have been treated as a uniform reduction in the observed brightness of the system that is independent of the orbital phase. However, unless the orbital plane of the system coincides with the plane of the sky, or if the two stars are completely identical and present with minimal mutual irradiation and tidal/rotational distortions, then this is unlikely to be an accurate representation of the effect of interstellar extinction. Here, we present an updated treatment of interstellar extinction as incorporated in the PHOEBE 2.2 release (publicly available from ) and assess the importance of using such an approach in the modeling of different types of binary systems. We also present the incorporation of PHOENIX model atmospheres into the PHOEBE 2.2 release, providing increased fidelity on computed observables down to lower temperatures than previously available. The importance of these new code developments is then highlighted via an extincted toy model of the eclipsing white-dwarf-subdwarf binary SDSS J235524.29+044855.7, demonstrating that, in the age of the Rubin Observatory Legacy Survey of Space and Time as well as complementary space-based photometric missions, a proper accounting for extinction and as well as the use of realistic model atmospheres will be essential in deriving accurate binary parameters.
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