Impact of stellar companions on precise radial velocities

@article{Cunha2012ImpactOS,
  title={Impact of stellar companions on precise radial velocities},
  author={D. Cunha and Pedro Figueira and Nuno C. Santos and Christophe Lovis and Gwenael Bou'e},
  journal={Astronomy and Astrophysics},
  year={2012},
  volume={550},
  pages={14}
}
ASD, IMCCE-CNRS UMR8028, Observatoire de Paris, UPMC, 77 avenue Denfert-Rochereau, 75014 Paris, FranceReceived January 9, 2014; accepted November 29, 2012ABSTRACTContext.With the announced arrival of instruments such as ESPRESSO one can expect that several systematic noise sources on themeasurement of precise radial velocity will become the limiting factor instead of photon noise. A stellar companion within the fiberis such a possible noise source.Aims.With this work we aim at characterizing the… 

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References

SHOWING 1-10 OF 15 REFERENCES

Planetary detection limits taking into account stellar noise - II. Effect of stellar spot groups on radial-velocities

Context. The detection of small mass planets with the radial-velocity technique is now confronted with the interference of stellar noise. HARPS can now reach a precision below the meter-per-second,

No planet for HD 166435

The G0 V star HD 166435 has been observed by the ber-fed spectrograph ELODIE as one of the targets in the large extra-solar planet survey that we are conducting at the Observatory of Haute-Provence.

Evidence against the young hot-Jupiter around BD +20 1790

Context. The young active star BD +201790 has been inferred to host a substellar companion from radial-velocity measurements that detected the reflex motion induced on the parent star. Aims. We

THE ASTRALUX LARGE M-DWARF MULTIPLICITY SURVEY

We present the results of an extensive high-resolution imaging survey of M-dwarf multiplicity using the Lucky Imaging technique. The survey made use of the AstraLux Norte camera at the Calar Alto 2.2

TW Hydrae: evidence of stellar spots instead of a Hot Jupiter

Context. TW Hya is a classical T Tauri star that shows significant radial-velocity variations in the optical regime. These variations have been attributed to a 10 MJup planet orbiting the star at

KEPLER-14b: A MASSIVE HOT JUPITER TRANSITING AN F STAR IN A CLOSE VISUAL BINARY

We present the discovery of a hot Jupiter transiting an F star in a close visual (0.″3 sky projected angular separation) binary system. The dilution of the host star's light by the nearly equal

Planetary detection limits taking into account stellar noise - I. Observational strategies to reduce stellar oscillation and granulation effects

Context. Stellar noise produced by oscillations, granulation phenomena (granulation, mesogranulation, and supergranulation), and activity affects radial velocity measurements. The signature of the

The CORALIE survey for southern extra-solar planets - IX. A 1.3-day period brown dwarf disguised as a planet

In this article we present the case of HD 41004 AB, a system composed of a K0V star and a 3.7-mag fainter M-dwarf companion. We have obtained 86 CORALIE spectra of this system with the goal of

A synthetic view on structure and evolution of the Milky Way

Since the Hipparcos mission and recent large scale surveys in the optical and the near-infrared, new constraints have been obtained on the structure and evolution history of the Milky Way. The

A PROGRADE, LOW-INCLINATION ORBIT FOR THE VERY HOT JUPITER WASP-3b

We present new spectroscopic and photometric observations of the transiting exoplanetary system WASP-3. Spectra obtained during two separate transits exhibit the Rossiter–McLaughlin (RM) effect and