GQ Lup, 2M1207, and AB Pic: Planet companion candidates imaged directly and their relevance in orbital dynamics and mass estimation via theoretical models, via

Details GQ Lup, 2M1207, and AB Pic: Planet companion candidates imaged directly and their relevance in orbital dynamics and mass estimation via theoretical models, via GQ Lup, 2M1207, and AB Pic: Planet companion candidates imaged directly and their relevance in orbital dynamics and mass estimation via theoretical models, via

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..240r.327n&link_type=abstract

Binary Stars as Critical Tools and Tests in Contemporary Astrophysics, International Astronomical Union. Symposium no. 240, he

Astronomy and Astrophysics

Astrophysics

Scientific paper

In 2005, evidence was presented for three exo-planets imaged directly: GQ Lup, 2M1207, and AB Pic. In all three cases, a faint red object is co-moving with a young nearby star. The masses of these companions are determined thru theoretical models, which are under dispute and have not yet been tested successfully in the relevant parameter range of young ages and low masses. We show that being co-moving with another star and having a late spectral type is necessary, but not sufficient for being gravitationally bound. We discuss the relevance of these three wide visual binary systems for orbital dynamics and testing theoretical models. We will also present new images from 2005 and 2006 to investigate orbital motion of GQ Lup b around GQ Lup A.

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