https://doi.org/10.1051/epjconf/201510106062
Tipsy pulsation of classical Cepheids – lessons from space photometry
1 Konkoly Observatory, Budapest, Hungary
2 SAO, Cambridge, USA
3 ELTE Gothard Astrophysical Observatory, Szombathely, Hungary
4 UBC, Vancouver, Canada
a e-mail: szabados@konkoly.hu
Published online: 23 September 2015
Space photometric data of the Kepler Cepheid, V1154 Cygni, and those of SZ Tauri (MOST photometry) indicate that classical Cepheids are not strictly regular pulsators. Cycle-to-cycle period changes and variations in the shape of the light curve are revealed from the continuous photometry covering 6 cycles of SZ Tau pulsation and several hundred pulsation cycles of V1154 Cyg. To make the situation more interesting/complicated, the MOST light curve of RT Aurigae (a Cepheid pulsating in the fundamental mode) shows stellar oscillations in a highly repetitive manner.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
