More reports from the IAU meeting at Torino, this time on surprises with the putative planet around Fomalhaut.
The IAU Symposium 276 comes to a close in Torino with a late surprise.
Fomalhaut b is the direct imagined planet with the dust ring: two epoch imaging showed a small dot which moved in a manner consistent with an orbit out at that radius.
The dot was a bit too bright, which led to speculation that it might be a ringed planet, like Saturn.
Well, Ray Jay reports on a talk by Kalas: there is new HST data, which apparently shows the plant still, but in a slightly wrong place – suggesting maybe an eccentric orbit which crosses the dust ring, which is problematic. Further, the speculation, now, on the excess brightness is that it is a co-orbiting dust cloud, which is starting to be a bit of a stretch
This needs more data – but, this one may have to be backed out a bit, not entirely satisfactory.
Or, surprises are good, keep us on our toes!