A giant planet orbiting the ‘extreme horizontal branch’ star V 391 Pegasi
@article{Silvotti2007AGP, title={A giant planet orbiting the ‘extreme horizontal branch’ star V 391 Pegasi}, author={Roberto Silvotti and S. Schuh and Rimvydas Janulis and J-E. Solheim and Stefano Bernabei and Roy {\O}stensen and Terry D. Oswalt and Ivan Bruni and Roberto Gualandi and Alfio Bonanno and G{\'e}rard Vauclair and M D Reed and C.-W. Chen and Elia Leibowitz and Margit Papar{\'o} and A S Baran and St{\'e}phane Charpinet and No{\"e}l Dolez and Steven D. Kawaler and Donald W. Kurtz and Paweł Moskalik and Reed L. Riddle and Staszek Zoła}, journal={Nature}, year={2007}, volume={449}, pages={189-191} }
After the initial discoveries fifteen years ago, over 200 extrasolar planets have now been detected. Most of them orbit main-sequence stars similar to our Sun, although a few planets orbiting red giant stars have been recently found. When the hydrogen in their cores runs out, main-sequence stars undergo an expansion into red-giant stars. This expansion can modify the orbits of planets and can easily reach and engulf the inner planets. The same will happen to the planets of our Solar System in…
187 Citations
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References
SHOWING 1-10 OF 46 REFERENCES
Tidal decay of close planetary orbits
- Physics, Geology
- 1996
The 4.2-day orbit of the newly discovered planet around 51~Pegasi is formally unstable to tidal dissipation. However, the orbital decay time in this system is longer than the main-sequence lifetime…
Can Planets Survive Stellar Evolution
- Physics, Geology
- 2007
We study the survival of gas planets around stars with masses in the range 1-5 M☉, as these stars evolve off the main sequence. We show that planets with masses smaller than one Jupiter mass do not…
Discovery of a planet around the K giant star 4 Ursae Majoris
- Physics, Geology
- 2007
For the past 3 years we have been monitoring a sample of 62 K giant stars using precise stellar radial velocity measurements with high accuracy taken at the Thuringer Landessternwarte Tautenburg. We…
Can Planets Influence the Horizontal Branch Morphology
- Physics, Geology
- 1998
I examine the influence of planets on the location of stars on the Hertzsprung-Russel diagram as the stars turn to the horizontal branch. As stars that have planetary systems evolve along the red…
A planetary system around the millisecond pulsar PSR1257 + 12
- Physics, GeologyNature
- 1992
MILLISECOND radio pulsars, which are old (∼109yr), rapidly rotating neutron stars believed to be spun up by accretion of matter from their stellar companions, are usually found in binary systems with…
The Effects of Post-Main-Sequence Solar Mass Loss on the Stability of Our Planetary System
- Physics, Geology
- 1998
Abstract We present the results of extensive long-term integrations of systems of planets with orbits initially identical to subsets of the planets within our Solar System, but with the Sun's mass…
The Origin of Extreme Horizontal Branch Stars
- Physics
- 1995
Strong mass loss on the red giant branch (RGB) can result in the formation of extreme horizontal branch (EHB) stars. The EHB stars spend most of their He core and shell burning phase at high…
Survival of a brown dwarf after engulfment by a red giant star
- Physics, GeologyNature
- 2006
The discovery of a brown dwarf in a short period orbit around a white dwarf is reported and the properties of both stars can be directly observed and show that the brown dwarf was engulfed by a red giant but that this had little effect on it.
Evolutionary sequences for red giant stars
- Physics
- 1978
A set of 46 evolutionary sequences has been computed for stars ascending the red giant branch for the first time. These red giant sequences, extending from the subgiant branch to the onset of helium…
First Full Evolutionary Computation of the Helium Flash-induced Mixing in Population II Stars
- Physics
- 2003
The core helium flash in low-mass stars with extreme mass loss occurs after the tip of the red giant branch, when the H-rich envelope is very thin. The low efficiency of the H-shell source enables…