BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Search for young transiting planets with the YETI network - Ronny 
 Errmann (University of Jena)
DTSTART:20161005T150000Z
DTEND:20161005T160000Z
UID:TALK67924@talks.cam.ac.uk
CONTACT:Ed Gillen
DESCRIPTION:Transiting planets are important for physical characterization
  of exoplanets. The light curves provide information such as the size of t
 he planet and the inclination of the orbit. With radial velocity follow-up
 s and inclination measured from the transit light curve\, the true mass of
  the planet is measurable. So far more than 2600 transiting exoplanets are
  known but all are relatively old (several 100 Myr to Gyrs). To close the 
 gap at young ages\, the YETI network (Young Exoplanet Transit Initiative) 
 was established. It consists of ground based telescopes with mirror sizes 
 of 0.4 to 2m\, located at different longitudes all over the world. As a re
 sult\, observations are continuous which eliminates gaps in the light curv
 es and decreases the number of missed transits.\nThe targets of the YETI n
 etwork are young open clusters\, which provide a large number of young sta
 rs with similar properties. The first target\, which is part of my researc
 h\, was Trumpler 37 with an age of 4 Myr. During a time span of three year
 s\, 60\,000 images from 12 telescopes have been obtained for this cluster.
  Two transiting candidates were found along with 400 other variable stars.
  Follow-up observation was done for these transiting candidates and young 
 eclipsing binaries and other young stars to analyse the systems. Through t
 hese observations\, it was determined  that the transit candidate signals 
 were false positives.\nWe are also monitoring 25 Ori (7 Myr)\, IC 348 (2 M
 yr)\, Col 69 (5 Myr) and NGC 1980 (5 Myr) in the YETI consortium. One tran
 siting planet was found around a member star of 25 Ori. The analysis is st
 ill in progress. The follow-up is still ongoing but in between a direct im
 aging planet was found around the same host star.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
END:VEVENT
END:VCALENDAR