EXOTIME: searching for planets and measuring Pdot in sdB pulsators

TL;DR

The paper reviews the EXOTIME project, which uses pulsation timing to detect exoplanets around sdB stars and study stellar evolution, presenting initial candidate detections after four years of monitoring.

Contribution

It introduces the EXOTIME project and reports the first candidate sub-stellar companions detected via pulsation timing in sdB stars.

Findings

Detection of brown dwarf and exoplanet candidates V1636 Ori b and DW Lyn b

Four years of dense monitoring showing promising results

Advancement in using pulsation timing for exoplanet detection

Abstract

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.