CAOSP abstracts, Volume: 50, No.: 2, year: 2020

Author(s): Skarka, M.; Kabáth, P.; Paunzen, E.; Mašek, M.; Žák, J.; Janík, J.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 50, no. 2, p. 630-631.
Date: 3/2020
Title: On the first δ Scuti-like pulsating Ap star in an eclipsing binary
Keyword(s): Stars: HD 99458, Stars: chemically peculiar, binaries: eclipsing, Stars: pulsations
Pages: 630 -- 631
DOI: https://doi.org/10.31577/caosp.2020.50.2.630
NASA ADS Abstract Service: 2020CoSka..50..630S
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: HD 99458 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 δ 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.