Chromospheric activity and rotation of FGK stars in the solar vicinity - An estimation of the radial velocity jitter

@article{MartnezArniz2010ChromosphericAA,
  title={Chromospheric activity and rotation of FGK stars in the solar vicinity - An estimation of the radial velocity jitter},
  author={R. M. Mart{\'i}nez-Arn{\'a}iz and J. Maldonado and David Montes and Carlos Eiroa and Benjamı́n Montesinos and Universidad Complutense de Madrid and Universidad Aut'onoma de Madrid and Laex and Cab},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={520}
}
Context. Chromospheric activity produces both photometric and spectroscopic variations that can be mistaken as planets. Large spots crossing the stellar disc can produce planet-like periodic variations in the light curve of a star. These spots clearly affect the spectral line profiles, and their perturbations alter the line centroids creating a radial velocity jitter that might “contaminate” the variations induced by a planet. Precise chromospheric activity measurements are needed to estimate… Expand
CHROMOSPHERICALLY ACTIVE STARS IN THE RADIAL VELOCITY EXPERIMENT (RAVE) SURVEY. I. THE CATALOG
RAVE, the unbiased magnitude limited survey of southern sky stars, contained 456,676 medium-resolution spectra at the time of our analysis. Spectra cover the Ca II infrared triplet (IRT) range, whichExpand
Chromospheric activity of nearby Sun-like stars
Context.The chromospheric emission in the cores of the Ca IIH & K lines of late-type dwarfs is a well known indicator of magnetic activity that decreases with increasing stellar age.Aims.I use thisExpand
Stellar activity as noise in exoplanet detection – I. Methods and application to solar-like stars and activity cycles
The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of theExpand
Radial velocity variations of photometrically quiet, chromospherically inactive kepler stars: A link between RV jitter and photometric flicker
We compare stellar photometric variability, as measured from Kepler light curves by Basri et al., with measurements of radial velocity (RV) rms variations of all California Planet Search overlapExpand
Effect of magnetic activity saturation in chromospheric flux–flux relationships
We present a homogeneous study of chromospheric and coronal flux–flux relationships using a sample of 298 late-type dwarf active stars with spectral types F to M. The chromospheric lines wereExpand
Star-spot distributions and chromospheric activity on the RS CVn type eclipsing binary SV Cam
Using a time series of high-resolution spectra and high-quality multicolour photometry, we reconstruct surface maps of the primary component of the RS CVn type rapidly rotating eclipsing binary, SVExpand
Activity time series of old stars from late F to early K
Context. The effect of stellar activity on radial velocity (RV) measurements appears to be a limiting factor in detecting Earth-mass planets in the habitable zone of a star that is similar to the SunExpand
Estimating Stellar Radial Velocity Variability from Kepler and GALEX: Implications for the radial velocity confirmation of exoplanets.
We cross match the GALEX and Kepler surveys to create a unique dataset with both ultraviolet (UV) measurements and highly precise photometric variability measurements in the visible light spectrum.Expand
Analysis of the chromosphere and corona of low-activity early-M dwarfs
Abstract While most of the exoplanets have been found orbiting around solar-type stars, low-mass stars have recently been recognized as ideal exo-life laboratory. Currently, stellar activity is oneExpand
Radial Velocity Planet Detection Biases at the Stellar Rotational Period
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 goalExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 69 REFERENCES
Do stellar magnetic cycles influence the measurement of precise radial velocities
The ever increasing level of precision achieved by present and future radial-velocity instruments is opening the way to discovering very low-mass, long-period planets (e.g. solar-system analogs).Expand
Activity-Related Radial Velocity Variation in Cool Stars
Planets have been detected orbiting several solar-type stars with the use of high-precision radial velocity (vr) measurements. While changes in vr can be measured with an accuracy of a few meters perExpand
Activity-induced radial velocity jitter in a flaring M dwarf
We investigate the effect of stellar activity and flares on short-term radial velocity measurements in the mid-M flare star CN Leo. Radial velocity variations are calculated from 181 UVES spectraExpand
Chromospheric activity, lithium and radial velocities of single late-type stars possible members of young moving groups
We present here high resolution echelle spectra taken during three observing runs of 14 single late-type stars identified in our previous studies (Montes et al. 2001b, hereafter Paper I) as possibleExpand
Rotational modulation of the photospheric and chromospheric activity in the young, single K2-dwarf PW And ?;??
The young active star PW And (HID 1405), has been studied using echelle spectra from eight observing runs carried out during the period 1999 – 2001. The cross correlation function (CCF) technique hasExpand
A high-resolution spectroscopic survey of late-type stars: chromospheric activity, rotation, kinematics, and age
Aims. We present a compilation of spectroscopic data from a survey of 144 chromospherically active young stars in the solar neighborhood, which may be used to investigate different aspects of itsExpand
Magnetic Activity-related Radial Velocity Variations in Cool Stars: First Results from the Lick Extrasolar Planet Survey
The discovery of the radial velocity (v -->r) signatures of planets around several solar-like stars highlights the importance of exploring the sources of v -->r variations intrinsic to the starsExpand
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 atExpand
Multiwavelength optical observations of chromospherically active binary systems V. FF UMa (2RE J09
Context. This is the fifth paper in a series aimed at studying the chromospheres of active binary systems using several optical spectroscopic indicators to obtain or improve orbital solution andExpand
Searching for Planets in the Hyades. II. Some Implications of Stellar Magnetic Activity
The Hyades constitute a homogeneous sample of stars ideal for investigating the dependence of planet formation on the mass of the central star. Because of their youth, Hyades members are much moreExpand
...
1
2
3
4
5
...