摘要：Context.Transiting exoplanets provide an opportunity for the characterization of their atmospheres, and finding the brightest star in the sky with a transiting planet enables high signal-to-noise ratio observations. TheKeplersatellite has detected over 365 multiple transiting exoplanet systems, a large fraction of which have nearly coplanar orbits. If one planet is seen to transit the star, then it is likely that other planets in the system will transit the star too. The bright (V= 3.86) starβPictoris is a nearby young star with a debris disk and gas giant exoplanet,βPictoris b, in a multi-decade orbit around it. Both the planet’s orbit and disk are almost edge-on to our line of sight.Aims.We carry out a search for any transiting planets in theβPictoris system with orbits of less than 30 days that are coplanar with the planetβPictoris b.Methods.We search for a planetary transit using data from the BRITE-Constellation nanosatellite BRITE-Heweliusz, analyzing the photometry using the Box-Fitting Least Squares Algorithm (BLS). The sensitivity of the method is verified by injection of artificial planetary transit signals using the Bad-Ass Transit Model cAlculatioN (BATMAN) code.Results.No planet was found in the BRITE-Constellation data set. We rule out planets larger than 0.6RJfor periods of less than 5 days, larger than 0.75RJfor periods of less than 10 days, and larger than 1.05RJfor periods of less than 20 days.
关键词：Key wordsenplanets and satellites: detectionplanets and satellites: individual: β Pictechniques: photometric
