James Webb Space Telescope joins the hunt for newborn exoplanets

[Admin]

The James Webb Space Telescope has joined the hunt for infant exoplanets, spotting a newly forming world — but not the one we had expected to see.

James Webb Space Telescope joins the hunt for newborn exoplanets : Read more

 

[rod]

"The lack of planets detected in all three systems tells us that the planets causing the gaps and spiral arms either are too close to their host stars or too faint to be seen with JWST," said Wagner. "If the latter is true, it tells us that they're of relatively low mass, low temperature, enshrouded in dust, or some combination of the three — as is likely the case in MWC 758."

Interesting observation in the article. https://exoplanet.eu/home/, this site now shows 5653 confirmed exoplanets. 90 are reported with a potential disc by IR excess or imaging. Host star ages shown range from 14 Gyr down to 1 Myr. The vast majority show no disc systems like TRAPPIST-1.

 

[Helio]

"The lack of planets detected in all three systems tells us that the planets causing the gaps and spiral arms either are too close to their host stars or too faint to be seen with JWST," said Wagner. "If the latter is true, it tells us that they're of relatively low mass, low temperature, enshrouded in dust, or some combination of the three — as is likely the case in MWC 758."

Interesting observation in the article. https://exoplanet.eu/home/, this site now shows 5653 confirmed exoplanets. 90 are reported with a potential disc by IR excess or imaging. Host star ages shown range from 14 Gyr down to 1 Myr. The vast majority show no disc systems like TRAPPIST-1.

That's interesting. I forgot the database had disk detections (column CR). But most are simply IR excess observations, which may include overaged stars that have puffed-up a lot of gas and dust. Most the ages are very young, indicating accretion disks. Eliminating the duplicates, I count 48. The Kepler study shows none, which makes sense.

I'm curious how large protoplanetary disks are for stars, especially the larger stars.