The radial velocity (RV) method, also known as Doppler spectroscopy, is a powerful technique for exoplanet discovery and characterization. In recent years, progress has been made thanks to the improvements […]
Doppler spectroscopy
Posted inAstrogeology, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Status Report
OrCAS: Origins, Compositions, and Atmospheres of Sub-neptunes. I. Survey Definition
Sub-Neptunes – volatile-rich exoplanets smaller than Neptune – are intrinsically the most common type of planet known.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The CARMENES Search for Exoplanets Around M Dwarfs. Revisiting the GJ 581 Multi-planetary System with New Doppler Measurements from CARMENES, HARPS, and HIRES
GJ 581 is a nearby M dwarf known to host a packed multiple planet system with 2 super-Earths and a Neptune-mass planet. We present new orbital analyses of the system, […]
Posted inAstronomy & Telescopes, Citizen Science / Open Science, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Planet Hunters TESS V: A Planetary System Around A Binary Star, Including A mini-Neptune In The Habitable Zone
We report on the discovery and validation of a transiting long-period mini-Neptune orbiting a bright (V = 9.0 mag) G dwarf (TOI 4633; R = 1.05 RSun, M = 1.10 […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Doppler Tomography As A Tool For Characterising Exoplanet Atmospheres II: An Analysis of HD 179949 b
High-resolution Doppler spectroscopy provides an avenue to study the atmosphere of both transiting and non-transiting planets. This powerful method has also yielded some of the most robust atmospheric detections to […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Astrophysicists Publish Kepler Giant Planet Search, An Aid To “Figure Out Where To Find Life”
A team of astrophysicists led by Lauren Weiss, assistant professor in the Department of Physics and Astronomy at the University of Notre Dame, created the first-ever catalog of small, Earth-like […]