On the first delta Scuti-like pulsating Ap star in an eclipsing binary
| Autoři | |
|---|---|
| Rok publikování | 2020 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Contributions of the Astronomical Observatory Skalnaté Pleso |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | http://www.astro.sk/caosp/Eedition/Abstracts/2020/Vol_50/No_2/pp630-631_abstract.html |
| Doi | http://dx.doi.org/10.31577/caosp.2020.50.2.630 |
| Klíčová slova | Stars: HD99458; Stars: chemically peculiar; binaries: eclipsing; Stars: pulsations |
| Popis | HD99458 was recently discovered to be a first object of its kind: a short-period eclipsing binary hosts a spotted, chemically peculiar A-type primary star that is a delta Scuti pulsator, and an M-dwarf secondary. These phenomena should not co-exist at the same time. Based on new photometric data we find that the previously published period of the main pulsation mode is a Nyquist alias of the true period (0.036 d, and not 0.052 d) given by the Kepler sampling. |
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