Jena 2013 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 4: Poster Session
EP 4.13: Poster
Dienstag, 26. Februar 2013, 11:15–12:45, Poster OG
YETI - search for young transiting planets — •Ronny Errmann1, Ralph Neuhäuser1, Stefanie Rätz1, Gracjan Maciejewski2, Manfred Kitze1, and YETI Team3 — 1Astrophysikal Institute und University Observatory, University Jena — 2Centre for Astronomy of the Nicolaus Copernicus University, Torun — 3all over the world
The transit method is the only method to determine the radius of a planet and inclination of the orbit directly. Radial velocity follow up results the true mass. So far, only transiting exoplanets older than several hundred Myr are known. To close the gap at young ages, the YETI network (Young Exoplanet Transit Initiative) was established. The network consists of ground based telescopes with mirror sizes of 0.4 to 2 m, located at different longitudes all over the world. With the telescopes it is possible to observe continuously for 24h a day without gaps in the light curves and therefor not missing a transit.
The targets are young clusters, which provide a large number of young stars with similar properties. The cluster is observed with YETI in three runs per year with length of one to two weeks each and over three years. The first target was Trumpler 37 with an age of 4 Myr. The monitoring started 2009. We reach a precision better than 30 milli-mag for 5500 out of the 17,000 field stars. Data processing of 50,000 images from 12 telescopes is still in progress, but we found already 2 transiting candidates, for which follow up is partly done.