The Transiting Exoplanet Survey Satellite (TESS) mission identified a potential 0.88 REarth planet with a period of 7.577 days, orbiting the nearby M1V star GJ 341 (TOI 741.01).
radial-velocity
![First image of the AO prototype ‘COME–ON’ system taken at 1.52 m telescope of the Observatoire de Haute Provence. γ2 And (a binary star with a 0.5′′ separation) was observed in K band [50]. -- astro-ph.IM](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/01/High-Contrast-Imaging.png?resize=1200%2C719&ssl=1)
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report
High-Contrast Imaging: Hide and Seek with Exoplanets
So far, most of the about 5,700 exoplanets have been discovered mainly with radial velocity and transit methods. These techniques are sensitive to planets in close orbits, not being able […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
An Absolute Mass, Precise Age, and Hints of Planetary Winds for WASP-121 A and b From a JWST NIRSpec Phase Curve
We have conducted a planetary radial velocity measurement of the ultra-hot Jupiter WASP-121b using JWST NIRSpec phase curve data. Our analysis reveals the Doppler shift of the planetary spectral lines […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Leveraging Precise Photometry From Kepler and TESS to Extract Exoplanets from Radial Velocity Time Series
Stellar activity contamination of radial velocity (RV) data is one of the top challenges plaguing the field of extreme precision RV (EPRV) science. Previous work has shown that photometry can […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Impact of Observing Cadence and Undetected Companions on the Accuracy of Planet Mass Measurements From Radial Velocity Monitoring
We conduct experiments on both real and synthetic radial velocity (RV) data to quantify the impact that observing cadence, the number of RV observations, and undetected companions all have on […]
Posted inExoplanets, -moons, -comets, Press Release
Three Potential Super-Earths Discovered Around Nearby Star HD 48 948
Astronomers have discovered three potential “super-Earth” exoplanets orbiting a relatively nearby orange dwarf star. This groundbreaking find was made by an international team of researchers led by Dr Shweta Dalal […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Characterizing Planetary Systems With SPIRou: A Temperate Sub-Neptune Exoplanet Orbiting The Nearby Fully-convective Star GJ 1289 And A Candidate Around GJ 3378
We report the discovery of two new exoplanet systems around fully convective stars, found from the radial-velocity (RV) variations of their host stars measured with the nIR spectropolarimeter CFHT/SPIRou over […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
TOI-1685 b is a Hot Rocky Super-Earth: Updates to the Stellar and Planet Parameters of a Popular JWST Cycle 2 Target
We present an updated characterization of the TOI-1685 planetary system, which consists of a Pb = 0.69 day USP super-Earth planet orbiting a nearby (d = 37.6 pc) M2.5V star […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, Stellar Cartography
The TESS-Keck Survey XX: 15 New TESS Planets and a Uniform RV Analysis of all Survey Targets
The Transiting Exoplanet Survey Satellite (TESS) has discovered hundreds of new worlds, with TESS planet candidates now outnumbering the total number of confirmed planets from Kepler.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Citizen Science / Open Science, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Citizen Scientists Help Discover A Habitable Zone Exoplanet In A Binary Star System
A team of astronomers and citizen scientists has discovered a planet in the habitable zone of an unusual star system, including two stars and potentially another exoplanet.