Yes… there’s more now listed at the Extrasolar Planets Encyclopedia, bringing the grand total to 322. Except a few of the new ones are border-line brown-dwarfs – itself a dubious distinction. Anthony Whitworth and his various colleagues have been modelling the formation of brown-dwarfs for years, and their latest model forms a bunch of brown-dwarfs, low mass stars and even planets in a heavy disk around a solar mass star. The heavy disk fragments under its own gravity, but is too far from the central star to be disrupted by shockwave heating, thus allowing a whole bunch of Jeans Mass clumps to condense. Most are scattered by their mutual interactions, but some get captured by the central star.
Thus in this model there’s no real distinction between stars, brown-dwarfs and planets, except the obvious “Does it fuse hydrogen, deuterium or nothing?”
A related model even more explicitly makes planets… Formation of Massive Exoplanets by Fragmentation of the Protostellar Cloud …in the same way as low-mass stars and BDs. Another e-print this year produces another eeriely familiar model… Planet Formation by ConCurrent Collapse …with many of the same features.
But most venerable of all is Michael M. Woolfson’s Capture Theory, an ADS bibliography for which (many downloadable) is here.
As Woolfson himself has said, there’s more than enough room for several different scenarios to successfully make planets…
