56 research outputs found
The Outcome of the Protoplanetary Disk of Very Massive Stars
We suggest that planets, brown dwarfs, and even low mass stars can be formed
by fragmentation of protoplanetary disks around very massive stars M>~100 solar
masses. We discuss how fragmentation conditions make the formation of very
massive planetary systems around very massive stars favorable. Such planetary
systems are likely to be composed of brown dwarfs and low mass stars of
~0.1-0.3 solar masses, at orbital separations of ~ few x 100 - 10^4 AU. In
particular, scaling from solar-like stars suggests that hundreds of
Mercury-like planets might orbit very massive stars at ~1000 AU, where
conditions might favor liquid water. Such fragmentation objects can be
excellent targets for the James Webb Space Telescope and other large telescopes
working in the IR bands. We predict that deep observations of very massive
stars would reveal these fragmentation objects, orbiting in the same orbital
plane in cases where there are more than one object.Comment: Accepted to New Astronom
Minimalist C/case
This article discusses A-licensing and case from a minimalist perspective, pursuing the idea that argument NPs cyclically enter a number of A-relations, rather than just a single one, resulting in event-licensing, case-licensing and phi-licensing. While argument case commonly reflects Voice/v-relations, canonical A-movement is driven by higher elements, either in the C-T system or in a superordinate v-system (in ECM constructions). In addition, there is a distinction to be drawn between the triggering of A-movement, by for example C, and the licensing of the landing site, by for instance T, C-probing leading to tucking-in into Spec-T. Much of the evidence presented comes from quirky case constructions in Icelandic and from ECM and raising constructions in Icelandic and English. It is argued that T in ECM constructions inherits phi-licensing from the matrix v, regardless of the case properties of v
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