Results 11 to 20 of about 300,905 (253)

Photoelectric Radial Velocities – I: TECHNIQUE [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 1974
G. W. van Citters, B. Warner
openalex   +2 more sources

A multi-technique approach to identifying and/or constraining radial-velocity substellar companions

open access: diamondAstronomy & Astrophysics, 2023
Context. Although more than one thousand sub-stellar companions have already been detected with the radial velocity (RV) method, many new companions remain to be detected in the public RV archives. Aims. We wish to use the archival data obtained with the ESO/HARPS spectrograph to search for sub-stellar companions. Methods.
F. Philipot   +5 more
  +6 more sources

Accounting for stellar activity signals in radial-velocity data by using change point detection techniques [PDF]

open access: diamondAstronomy & Astrophysics, 2022
Context.Active regions on the photosphere of a star have been the major obstacle for detecting Earth-like exoplanets using the radial velocity (RV) method. A commonly employed solution for addressing stellar activity is to assume a linear relationship between the RV observations and the activity indicators along the entire time series, and then remove ...
Umberto Simola   +5 more
openalex   +6 more sources

Search for planets around young stars with the radial velocity technique [PDF]

open access: green, 2010
Giant planets form in circumstellar disks around young stars. Two alternative theoretical formation concepts, disk instability and core accretion, may both apply under certain conditions, but core accretion is believed to be the main mechanism. No observational proof of the dominant process has been found thus far. Therefore, this thesis aims to detect
P. Weise
openalex   +3 more sources

Consistent radial velocities of classical Cepheids from the cross-correlation technique [PDF]

open access: hybridAstronomy & Astrophysics, 2019
Context. Accurate radial velocities (vrad) of Cepheids are mandatory within the context of Cepheid distance measurements using the Baade-Wesselink technique. The most common vrad derivation method consists in cross-correlating the observed stellar spectra with a binary template and measuring a velocity on the resulting mean profile.
S. Borgniet   +13 more
openalex   +4 more sources

Radial velocity technique [PDF]

open access: green
The precise Doppler method for measuring stellar radial velocities (RV) is a fundamental technique in modern astronomy. This method records a star's spectrum and detects periodic Doppler shifts in its spectral features, which indicate the gravitational influences induced by orbiting companions.
Trifon Trifonov
  +5 more sources

Radial velocity data analysis with compressed sensing techniques [PDF]

open access: greenMonthly Notices of the Royal Astronomical Society, 2016
Accepted for publication in ...
N. Hara   +3 more
openalex   +7 more sources

Detectability of quasi-circular co-orbital planets. Application to the radial velocity technique [PDF]

open access: greenAstronomy & Astrophysics, 2015
Several celestial bodies in co-orbital configurations exist in the solar system. However, co-orbital exoplanets have not yet been discovered. This lack may result from a degeneracy between the signal induced by co-orbital planets and other orbital configurations.
A. Leleu   +2 more
  +8 more sources

Search for Large Radial Velocities in Direction of NGP Using the Fehrenbach Techniques [PDF]

open access: bronzeHighlights of Astronomy, 1977
The Observatory of Strasbourg will participate in the future in the general radial velocity survey which is in hand at the Observatories of Haute-Provence and of Marseille with FEHRENBACH’s Objective-prism astrograph. A programme of this type, providing a large number of data, is particularly suitable at the place where the “Data Center” is growing up ...
A. Florsch
openalex   +2 more sources

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