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Main-sequence progenitor configurations of the NN Ser candidate circumbinary planetary system are dynamically unstable

Mustill, Alexander LU ; Marshall, Jonathan P; Villaver, Eva; Veras, Dimitri; Davis, Philip J; Horner, Jonathan and Wittenmyer, Robert A (2013) In Monthly Notices of the Royal Astronomical Society 436(3). p.2515-2521
Abstract
Recent observations of the NN Serpentis post-common envelope binary system have revealed eclipse timing variations that have been attributed to the presence of two Jovian-mass exo-planets. Under the assumption that these planets are real and survived from the binary's main-sequence state, we reconstruct initial binaries that give rise to the present NN Ser configuration and test the dynamical stability of the original system. Under standard assumptions about binary evolution, we find that survival of the planets through the entire main-sequence lifetime is very unlikely. Hence, we conclude that the planets are not survivors from before the common envelope phase, implying that either they formed recently out of material ejected from the... (More)
Recent observations of the NN Serpentis post-common envelope binary system have revealed eclipse timing variations that have been attributed to the presence of two Jovian-mass exo-planets. Under the assumption that these planets are real and survived from the binary's main-sequence state, we reconstruct initial binaries that give rise to the present NN Ser configuration and test the dynamical stability of the original system. Under standard assumptions about binary evolution, we find that survival of the planets through the entire main-sequence lifetime is very unlikely. Hence, we conclude that the planets are not survivors from before the common envelope phase, implying that either they formed recently out of material ejected from the primary or that the observed signals are of non-planetary origin. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics, binaries: close, planetary systems, planets and satellites: dynamical evolution and stability, stars: individual: NN Ser
in
Monthly Notices of the Royal Astronomical Society
volume
436
issue
3
pages
2515 - 2521
publisher
Wiley-Blackwell
external identifiers
  • Scopus:84888240780
ISSN
1365-2966
DOI
10.1093/mnras/stt1754
language
English
LU publication?
no
id
9254b602-9a66-4562-b254-6762bd9183d6 (old id 4500076)
date added to LUP
2014-06-25 15:14:07
date last changed
2016-11-27 04:32:00
@misc{9254b602-9a66-4562-b254-6762bd9183d6,
  abstract     = {Recent observations of the NN Serpentis post-common envelope binary system have revealed eclipse timing variations that have been attributed to the presence of two Jovian-mass exo-planets. Under the assumption that these planets are real and survived from the binary's main-sequence state, we reconstruct initial binaries that give rise to the present NN Ser configuration and test the dynamical stability of the original system. Under standard assumptions about binary evolution, we find that survival of the planets through the entire main-sequence lifetime is very unlikely. Hence, we conclude that the planets are not survivors from before the common envelope phase, implying that either they formed recently out of material ejected from the primary or that the observed signals are of non-planetary origin.},
  author       = {Mustill, Alexander and Marshall, Jonathan P and Villaver, Eva and Veras, Dimitri and Davis, Philip J and Horner, Jonathan and Wittenmyer, Robert A},
  issn         = {1365-2966},
  keyword      = {Astrophysics - Earth and Planetary Astrophysics,Astrophysics - Solar and Stellar Astrophysics,binaries: close,planetary systems,planets and satellites: dynamical evolution and stability,stars: individual: NN Ser},
  language     = {eng},
  number       = {3},
  pages        = {2515--2521},
  publisher    = {ARRAY(0x92c9c60)},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {Main-sequence progenitor configurations of the NN Ser candidate circumbinary planetary system are dynamically unstable},
  url          = {http://dx.doi.org/10.1093/mnras/stt1754},
  volume       = {436},
  year         = {2013},
}