Finding binaries from phase modulation of pulsating stars with Kepler –VI. Orbits for 10 new binaries with mischaracterized primaries
| Autor: | Timothy R. Bedding, Nicholas H. Barbara, Simon J. Murphy, Ben D. Fulcher, Daniel R. Hey |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
oscillations [Stars]
FOS: Physical sciences Binary number 02 engineering and technology Astrophysics 01 natural sciences Kepler variables: general [Stars] 020204 information systems 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics Orbital elements Physics general [Binaries] White dwarf variables: δ Scuti [Stars] Astronomy and Astrophysics Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics::Earth and Planetary Astrophysics Phase modulation |
| Zdroj: | Murphy, S J, Barbara, N H, Hey, D, Bedding, T R & Fulcher, B D 2021, ' Finding binaries from phase modulation of pulsating stars with Kepler –VI. Orbits for 10 new binaries with mischaracterized primaries ', Monthly Notices of the Royal Astronomical Society, vol. 493, no. 4, pp. 5382-5388 . https://doi.org/10.1093/mnras/staa562 |
| DOI: | 10.1093/mnras/staa562 |
| Popis: | Measuring phase modulation in pulsating stars has proved to be a highly successful way of finding binary systems. The class of pulsating main-sequence A and F variables known as delta Scuti stars are particularly good targets for this, and the \textit{Kepler} sample of these has been almost fully exploited. However, some \textit{Kepler} $\delta$ Scuti stars have incorrect temperatures in stellar properties catalogues, and were missed in previous analyses. We used an automated pulsation classification algorithm to find 93 new $\delta$ Scuti pulsators among tens of thousands of F-type stars, which we then searched for phase modulation attributable to binarity. We discovered 10 new binary systems and calculated their orbital parameters, which we compared with those of binaries previously discovered in the same way. The results suggest that some of the new companions may be white dwarfs. Comment: 8 pages, 6 figures that make liberal use of colour |
| Databáze: | OpenAIRE |
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