Detecting planets around very cool dwarfs at near infrared wavelengths with the radial velocity technique [PDF]
Astronomy & Astrophysics, 2011 Context. Radial velocity monitoring of very cool dwarfs such as late M- and hot L-dwarfs has become a promising tool to search for rocky planets as well as to follow-up planetary candidates around dwarfs found by transit surveys. These stars are faint at optical wavelengths, as their spectral flux distribution peaks at near-infrared (NIR) wavelengths ...
F. Rodler +7 more
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Multiple Explanations for the Single Transit of KIC 5951458 Based on Radial Velocity Measurements Extracted with a Novel Matched-template Technique∗ [PDF]
The Astronomical Journal, 2020 Abstract Planetary systems that show single-transit events are a critical pathway to increasing the yield of long-period exoplanets from transit surveys. From the primary Kepler mission, KIC 5951458 b (Kepler-456b) was thought to be a single-transit giant planet with an orbital period of 1310 days.
Paul A. Dalba +4 more
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A VERSATILE TECHNIQUE TO ENABLE SUB-MILLI-KELVIN INSTRUMENT STABILITY FOR PRECISE RADIAL VELOCITY MEASUREMENTS: TESTS WITH THE HABITABLE-ZONE PLANET FINDER* [PDF]
The Astrophysical Journal, 2016 ABSTRACT Insufficient instrument thermomechanical stability is one of the many roadblocks for achieving 10 cm s−1 Doppler radial velocity precision, the precision needed to detect Earth-twins orbiting solar-type stars. Highly temperature and pressure stabilized spectrographs allow us to better calibrate out instrumental drifts, thereby ...
Gudmundur Stefansson +15 more
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Quality Assessment Techniques Applied to Surface Radial Velocity Maps Obtained from High-Frequency Radars [PDF]
Journal of Atmospheric and Oceanic Technology, 2015 AbstractThis paper presents examples of the data quality assessment of surface radial velocity maps obtained from shore-based single and multiple high-frequency radars (HFRs) using statistical and dynamical approaches in a hindcast mode. Since a single radial velocity map contains partial information regarding a true current field, archived radial ...
Sung Yong Kim
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Detection of Planetary and Stellar Companions to Neighboring Stars via a Combination of Radial Velocity and Direct Imaging Techniques [PDF]
The Astronomical Journal, 2019 Abstract The sensitivities of radial velocity (RV) surveys for exoplanet detection are extending to increasingly longer orbital periods, where companions with periods of several years are now being regularly discovered. Companions with orbital periods that exceed the duration of the survey manifest in the data as an incomplete orbit or ...
Stephen R. Kane +15 more
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Application of the Telluric-Line Technique to Study Late-Type Stars for Radial-Velocity Variations [PDF]
International Astronomical Union Colloquium, 1999 AbstractAlthough the use of telluric lines as wavelength fiducials to measure radial velocities does not achieve as high a precision as other fiducial-imposition techniques, this very convenient technique can be used concurrently with other observing programs to increase the temporal sampling of target stars.
R. Greimel, Stephenson Yang
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Development of Iodine Cells for Subaru HDS and Okayama HIDES. III. An Improvement on the Radial-Velocity Measurement Technique [PDF]
Publications of the Astronomical Society of Japan, 2008 Abstract An improvement of the radial-velocity measurement accuracy is crucial for the detection of tiny stellar oscillations and exoplanets. Through the analysis of week-long extensive observations of solar-type stars (Procyon in 2000, 2002, and 2006/2007 and $\tau$ Cet in 2002 and 2006/2007), we have carefully examined, revised, and ...
Eiji Kambe +16 more
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Deriving High-Precision Radial Velocities [PDF]
, 2017 This chapter describes briefly the key aspects behind the derivation of precise radial velocities. I start by defining radial velocity precision in the context of astrophysics in general and exoplanet searches in particular.
P. Figueira
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KELT-8b: A HIGHLY INFLATED TRANSITING HOT JUPITER AND A NEW TECHNIQUE FOR EXTRACTING HIGH-PRECISION RADIAL VELOCITIES FROM NOISY SPECTRA [PDF]
The Astrophysical Journal, 2015 We announce the discovery of a highly inflated transiting hot Jupiter discovered by the KELT-North survey. A global analysis including constraints from isochrones indicates that the V = 10.8 host star (HD 343246) is a mildly evolved, G dwarf with $T_{\rm eff} = 5754_{-55}^{+54}$ K, $\log{g} = 4.078_{-0.054}^{+0.049}$, $[Fe/H] = 0.272\pm0.038$, an ...
Benjamin J. Fulton +31 more
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Some stages of the development in the technique of the stellar radial velocity determination
Odessa Astronomical Publications, 2017 About some stages of the development in the technique of the stellar radial velocity ...
В. Е. Панчук, T. A Yakshina
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