A SEARCH FOR PLANETARY ECLIPSES OF WHITE DWARFS IN THE Pan-STARRS1 MEDIUM-DEEP FIELDS

作者：Fulton B J^*; Tonry J L; Flewelling H; Burgett W S; Chambers K C; Hodapp K W; Huber M E; Kaiser N; Wainscoat R J; Waters C

来源：Astrophysical Journal, 2014, 796(2): 114.

DOI：10.1088/0004-637X/796/2/114

• planets and satellites: detection
• white dwarfs

We present a search for eclipses of similar to 1700 white dwarfs (WDs) in the Pan-STARRS1 medium-deep fields. Candidate eclipse events are selected by identifying low outliers in over 4.3 million light curve measurements. We find no short-duration eclipses consistent with being caused by a planetary size companion. This large data set enables us to place strong constraints on the close-in planet occurrence rates around WDs for planets as small as 2 R-circle plus. Our results indicate that gas giant planets orbiting just outside the Roche limit are rare, occurring around less than 0.5% of WDs. Habitable-zone super-Earths and hot super-Earths are less abundant than similar classes of planets around main-sequence stars. These constraints provide important insight into the ultimate fate of the large population of exoplanets orbiting main-sequence stars.

• 出版日期2014-12-1