All articles tagged with #gj 504 b
Using the James Webb Space Telescope, researchers obtained the first direct spectrum of the cool, pink exoplanet GJ 504 b and detected signatures of water vapor, methane, carbon dioxide, and ammonia; when salt clouds are included in atmospheric models, the data align with theory, implying a metal-rich planet aged roughly 2.5–4 billion years and highlighting clouds’ key role in interpreting similar faint exoplanets.
The James Webb Space Telescope has for the first time obtained a spectrum of GJ 504 b, the so-called Pink Planet, showing its light is best explained by a hazy atmosphere with salt clouds. The analysis detects water vapor, CO, methane, CO2, ammonia and hydrogen sulfide, plus signs of metal enrichment and disequilibrium chemistry, suggesting a dynamic, cloud-forming atmosphere. The planet is extremely cold for a directly imaged world (about 564 K) and sits near the planetary-mass/brown-dwarf boundary; the salt-cloud model is the key to fitting the spectrum, though the object's exact nature remains unsettled. The result demonstrates JWST’s ability to study faint, cold exoplanets and tests cloud-formation theories long discussed in theoretical work.
A new image captured by the Subaru Telescope's HiCIAO instrument reveals GJ 504 b, a 'second Jupiter' exoplanet located 60 light-years away in the constellation Virgo, providing valuable insights into exoplanet characteristics such as temperature and atmospheric composition.