An Extreme-precision Radial-velocity Pipeline: First Radial Velocities from EXPRES [PDF]
The Astronomical Journal, 2020 The EXtreme-PREcision Spectrograph (EXPRES) is an environmentally stabilized, fiber-fed, R = 137,500, optical spectrograph. It was recently commissioned at the 4.3 m Lowell Discovery Telescope near Flagstaff, Arizona. The spectrograph was designed with a
R. R. Petersburg +15 more
semanticscholar +6 more sources
The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades [PDF]
Astrophysical Journal Supplement Series, 2021 We present a high-precision radial velocity (RV) survey of 719 FGKM stars, which host 164 known exoplanets and 14 newly discovered or revised exoplanets and substellar companions.
L. Rosenthal +22 more
semanticscholar +1 more source
orvara: An Efficient Code to Fit Orbits Using Radial Velocity, Absolute, and/or Relative Astrometry [PDF]
Astronomical Journal, 2021 We present an open-source Python package, Orbits from Radial Velocity, Absolute, and/or Relative Astrometry (orvara), to fit Keplerian orbits to any combination of radial velocity, relative astrometry, and absolute astrometry data from the Hipparcos-Gaia
Timothy D. Brandt +7 more
semanticscholar +1 more source
The Solar Neighborhood XLVIII: Nine Giant Planets Orbiting Nearby K Dwarfs, and the CHIRON Spectrograph’s Radial Velocity Performance [PDF]
Astronomical Journal, 2021 We report initial results of a large radial velocity survey of K dwarfs up to a distance of 50 pc from the solar system, to look for stellar, brown dwarf, and Jovian planets using radial velocities from the CHIRON spectrograph on the CTIO/SMARTS 1.5 m ...
L. Paredes +7 more
semanticscholar +1 more source
Public HARPS radial velocity database corrected for systematic errors [PDF]
Astronomy & Astrophysics, 2020 Context. The High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph has been mounted since 2003 at the ESO 3.6 m telescope in La Silla and provides state-of-the-art stellar radial velocity (RV) measurements with a precision down to ∼1 m s−1 ...
T. Trifonov +5 more
semanticscholar +1 more source
The Sixth Data Release of the Radial Velocity Experiment (RAVE). I. Survey Description, Spectra, and Radial Velocities [PDF]
Astronomical Journal, 2020 The Radial Velocity Experiment (Rave) is a magnitude-limited (9 < I < 12) spectroscopic survey of Galactic stars randomly selected in Earth’s southern hemisphere.
M. Steinmetz +61 more
semanticscholar +1 more source
Direct confirmation of the radial-velocity planetβPictoris c [PDF]
Astronomy & Astrophysics, 2020 Context.Methods used to detect giant exoplanets can be broadly divided into two categories: indirect and direct. Indirect methods are more sensitive to planets with a small orbital period, whereas direct detection is more sensitive to planets orbiting at
M. Nowak +93 more
semanticscholar +1 more source
On-sky commissioning of MAROON-X: a new precision radial velocity spectrograph for Gemini North [PDF]
Ground-based and Airborne Instrumentation for Astronomy VIII, 2020 MAROON-X is a fiber-fed, red-optical, high precision radial velocity spectrograph recently commissioned at the Gemini North telescope on Mauna Kea, Hawai’i.
A. Seifahrt +12 more
semanticscholar +1 more source
Automatic Recognition Algorithm of Convergence Region Based on Relative Storm Radial Velocity Field
应用气象学报, 2021 An algorithm for automatically identifying the mid-altitude radial convergence from the storm-relative radial velocity field is proposed. The algorithm first identifies the positive-negative velocity segments in each radial direction on the single ...
Zhu Li, Kang Lan
doaj +1 more source
Three years of HARPS-N high-resolution spectroscopy and precise radial velocity data for the Sun [PDF]
Astronomy & Astrophysics, 2020 Context. The solar telescope connected to HARPS-N has been observing the Sun since the summer of 2015. Such a high-cadence, long-baseline data set is crucial for understanding spurious radial-velocity signals induced by our Sun and by the instrument.
X. Dumusque +37 more
semanticscholar +1 more source