DW Lyn: Pulsating sdB star with 5 M_Jup planet at 1 AU

EXOTIME: searching for planets and measuring Pdot in sdB pulsators
http://arxiv.org/abs/1301.2048

Quote :

We review the status of the EXOTIME project (EXOplanet search with the TIming MEthod). The two main goals of EXOTIME are to search for sub-stellar companions to sdB stars in wide orbits, and to measure the secular variation of the pulsation periods, which are related to the evolutionary change of the stellar structure. Now, after four years of dense monitoring, we start to see some results and present the brown dwarf and exoplanet candidates V1636 Ori b and DW Lyn b.

A follow-up paper:

Mackebrandt et al. (2020) "The EXOTIME project: Signals in the O-C diagrams of the rapidly pulsating subdwarfs DW Lyn, V1636 Ori, QQ Vir, and V541 Hya"
https://arxiv.org/abs/2004.04764
https://www.aanda.org/articles/aa/pdf/forth/aa37172-19.pdf

from the conclusion:

Quote :

Almost all analysed pulsation modes show formal significant changes in arrival times, but the amplitudes of these periodic signals do not correlate with frequencies, excluding the light travel time effect due to orbital reflex motions for such variations and thus giving upper limits on companion masses. Only DW Lyn might have a planetary companion on a long orbital period, as indicated by one arrival time measurement. But this can not be confirmed with a second measurement, due to larger uncertainties.