TWO POSSIBLE CIRCUMBINARY PLANETS IN THE ECLIPSING POST-COMMON ENVELOPE SYSTEM NSVS 14256825*

摘要: We present an analysis of eclipse timings the post-common envelope binary NSVS 14256825, which is composed sdOB star and a dM in close orbit (P orb = 0.110374 days). High-speed photometry this system was performed between 2010 July 2012 August. Ten new mid-eclipse times were analyzed together with all available literature. revisited (O – C) diagram using linear ephemeris verified clear orbital period variation. On assumption that these variations are caused by light travel time effects, can be explained presence two circumbinary bodies, even though explanation requires longer baseline observations to fully tested. The periods best solution would Pc ~ 3.5 years Pd 6.9 years. corresponding projected semi-major axes ac sin ic 1.9 AU ad id 2.9 AU. masses external bodies Mc M Jupiter Md 8.1 Jupiter, if we assume their orbits coplanar binary. Therefore NSVS 14256825 might planets, still open other interpretations.