05-11-2017, 07:52 PM
HOTPE - this might interest you given your post above.
"Scientists investigate debris disk in a nearby planetary system"
This involved the JCMT on MK and again is about a debris disk around a star, this time one very similar to our sun.
"The new study reveals that the debris disk is larger than previously thought. Marino's team found that it extends from 30 to at least 150 AU. Combined ALMA and SCUBA2/JMCT observations also show that at 0.86 mm the total disc emission is about 3.7 mJy and the disk has a surface density distribution of millimeter sized grains with a power law slope of approximately 0.1.
Moreover, the researchers assume that a yet unseen fourth planet may lurk somewhere in the system between 61 Vir d at 0.5 AU and the inner edge of the disc. They argue that if the disc was stirred at 150 AU by an additional planet, that unseen alien world should have a mass of at least 10 Earth masses and should orbit its host at a distance between 10 and 20 AU."
https://phys.org/news/2017-05-scientists...etary.html
ETA: The link. Sorry about that. It's been a very long day (and night).
"Scientists investigate debris disk in a nearby planetary system"
This involved the JCMT on MK and again is about a debris disk around a star, this time one very similar to our sun.
"The new study reveals that the debris disk is larger than previously thought. Marino's team found that it extends from 30 to at least 150 AU. Combined ALMA and SCUBA2/JMCT observations also show that at 0.86 mm the total disc emission is about 3.7 mJy and the disk has a surface density distribution of millimeter sized grains with a power law slope of approximately 0.1.
Moreover, the researchers assume that a yet unseen fourth planet may lurk somewhere in the system between 61 Vir d at 0.5 AU and the inner edge of the disc. They argue that if the disc was stirred at 150 AU by an additional planet, that unseen alien world should have a mass of at least 10 Earth masses and should orbit its host at a distance between 10 and 20 AU."
https://phys.org/news/2017-05-scientists...etary.html
ETA: The link. Sorry about that. It's been a very long day (and night).