SIMBAD references

2010ApJ...709..168A - Astrophys. J., 709, 168-178 (2010/January-3)

How eccentric orbital solutions can hide planetary systems in 2:1 resonant orbits.


Abstract (from CDS):

The Doppler technique measures the reflex radial motion of a star induced by the presence of companions and is the most successful method to detect exoplanets. If several planets are present, their signals will appear combined in the radial motion of the star, leading to potential misinterpretations of the data. Specifically, two planets in 2:1 resonant orbits can mimic the signal of a single planet in an eccentric orbit. We quantify the implications of this statistical degeneracy for a representative sample of the reported single exoplanets with available data sets, finding that (1) around 35% of the published eccentric one-planet solutions are statistically indistinguishable from planetary systems in 2:1 orbital resonance, (2) another 40% cannot be statistically distinguished from a circular orbital solution, and (3) planets with masses comparable to Earth could be hidden in known orbital solutions of eccentric super-Earths and Neptune mass planets.

Abstract Copyright:

Journal keyword(s): celestial mechanics - planetary systems - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/ApJ/709/168): table2.dat table3.dat>

CDS comments: In table 4, HD 222782 is very likely a misprint for HD 222582.

Simbad objects: 421

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