Y dwarfs are the coolest spectral class of brown dwarf. They have effective temperatures less than 500 K, with the coolest detection as low as ~250 K. Their spectra are […]
Brown Dwarfs
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Brown Dwarfs, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Silicate Cloud Features Observed By Webb On Exoplanet VHS 1256 b
Researchers observing with the NASA/ESA/CSA James Webb Space Telescope have pinpointed silicate cloud features in a distant planet’s atmosphere.
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Direct Imaging Explorations For Companions Around Mid-Late M Stars From The Subaru/IRD Strategic Program
The Subaru telescope is currently performing a strategic program (SSP) using the high-precision near-infrared (NIR) spectrometer IRD to search for exoplanets around nearby mid/late-M~dwarfs via radial velocity (RV) monitoring.
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Detecting Exomoons From Radial Velocity Measurements Of Self-luminous Planets: Application To Observations Of HR 7672 B And Future Prospects
The detection of satellites around extrasolar planets, so called exomoons, remains a largely unexplored territory.
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Press Release
Rogue Planets And Brown Dwarfs: Predicting Populations Of Free-floating Planetary Mass Objects Observable With JWST
Free-floating (or rogue) planets are planets that are liberated (or ejected) from their host systems. Although simulations predict their existence in substantial numbers, direct observational evidence for free-floating planets with […]
Posted inAlpha Centauri, Biosignatures & Paleobiology, Brown Dwarfs, Epsilon Eridani, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri, tau Ceti, TRAPPIST-1
Goldilocks Stars Are Best Places to Look for Life
In the search for life beyond Earth, astronomers look for planets in a star’s “habitable zone” — sometimes nicknamed the “Goldilocks zone” — where temperatures are just right for liquid […]
Posted inBrown Dwarfs
Brown Dwarf Atmospheres As The Potentially Most Detectable And Abundant Sites For Life
We show that the total habitable volume in the atmospheres of cool brown dwarfs with effective temperatures of ∼250-350 K is possibly larger by two orders of magnitude than that […]
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Status Report
A Search For Rocky Planets Transiting Brown Dwarfs
Exoplanetary science has reached a historic moment. The James Webb Space Telescope will be capable of probing the atmospheres of rocky planets, and perhaps even search for biologically produced gases. […]