Which specific astrometric discovery around 2020 failed subsequent radial-velocity checks, labeled a false positive?

Answer

DENIS-P J082303.1-491201b (VB 10b)

The process of confirmation in exoplanet science is rigorous, and even seemingly promising astrometric finds can be overturned by follow-up observations using different techniques. The object designated DENIS-P J082303.1-491201b, which is also referenced as VB 10b and was cited in the NASA exoplanet archive as an astrometric discovery dating around 2020, serves as a key example of this verification hurdle. Despite the initial astrometric signal suggesting a planetary companion, subsequent follow-up observations utilizing the radial velocity method failed to confirm the finding. Due to this inconsistency, most researchers now classify DENIS-P J082303.1-491201b as a false positive, highlighting the essential need for cross-validation between detection methodologies.

Which specific astrometric discovery around 2020 failed subsequent radial-velocity checks, labeled a false positive?

Related Questions

What level of accuracy is required for measuring stellar locations in astrometry?What unique planetary property does astrometry determine that radial velocity only estimates as minimum mass?Which stars were involved in historical astrometric claims later deemed unproven or doubted?When is the displacement measured by astrometry maximized for easier detection?How many candidates were reported detected via astrometry compared to the confirmed count of pure discoveries?Which specific astrometric discovery around 2020 failed subsequent radial-velocity checks, labeled a false positive?How many exoplanets does the Gaia mission forecast detecting via astrometric wobble within 1,600 light-years?What is the precision targeted by the Gaia mission for its brightest stars based on cumulative data?How does astrometry's sensitivity to detection change relative to the planet's orbital distance from its star?What essential measurement does astrometry rely upon in the context of planet hunting?
discoveryastronomymethodplanetastrometry