SIMBAD references

2016MNRAS.459.3565V - Mon. Not. R. Astron. Soc., 459, 3565-3573 (2016/July-2)

Radial velocity planet detection biases at the stellar rotational period.

VANDERBURG A., PLAVCHAN P., JOHNSON J.A., CIARDI D.R., SWIFT J. and KANE S.R.

Abstract (from CDS):

Future generations of precise radial velocity (RV) surveys aim to achieve sensitivity sufficient to detect Earth mass planets orbiting in their stars' habitable zones. A major obstacle to this goal is astrophysical RV noise caused by active areas moving across the stellar limb as a star rotates. In this paper, we quantify how stellar activity impacts exoplanet detection with radial velocities as a function of orbital and stellar rotational periods. We perform data-driven simulations of how stellar rotation affects planet detectability and compile and present relations for the typical time-scale and amplitude of stellar RV noise as a function of stellar mass. We show that the characteristic time-scales of quasi-periodic RV jitter from stellar rotational modulations coincides with the orbital period of habitable-zone exoplanets around early M-dwarfs. These coincident periods underscore the importance of monitoring the targets of RV habitable-zone planet surveys through simultaneous photometric measurements for determining rotation periods and activity signals, and mitigating activity signals using spectroscopic indicators and/or RV measurements at different wavelengths.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: radial velocities - planets and satellites: detection - planets and satellites: detection

Simbad objects: 15

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2021.08.04-02:22:52

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