Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2011-02-02
AIP Conference Proceedings, Volume 1331, pp. 281-286 (2011)
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
Part of PlanetsbeyondMS/2010 proceedings http://arxiv.org/html/1011.6606
Scientific paper
10.1063/1.3570986
We have detected 2 circumbinary planets around the close binary system NN Serpentis using the orbital time delay effect measured via the sharp eclipses of the white dwarf primary. The present pre-cataclysmic binary was formed when the original - 2 M primary expanded into a red giant, causing the secondary star to drop from its original orbit at a separation of about 1.4 A.U. down to its current separation at 0.0043 A.U. A quasi-adiabatic evolution of the circumbinary planets' orbits during the common-envelope phase would have placed them in unstable configurations, suggesting that they may have suffered significant orbital drag effects and were originally in much larger orbits. Alternatively, they may have been created as 2nd-generation planets during the last million years from the substantial amount of material lost during the creation of the binary, making them the youngest planets known. Either solution shows how little we actually understand about planetary formation.
Beuermann Klaus
Copperwheat Chris M.
Dhillon Vik S.
Dreizler Stefan
Hermes J. J.
No associations
LandOfFree
The Planets around the Post-Common Envelope Binary NN Serpentis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Planets around the Post-Common Envelope Binary NN Serpentis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Planets around the Post-Common Envelope Binary NN Serpentis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-81703