Constraints on the Formation of the Planet Around HD 188753 A
نویسنده
چکیده
The recent discovery of a Jupiter-mass planet in the close binary star system HD188753 poses a problem for planet formation theory. A circumstellar disk around the planet’s parent star would be truncated at 1.3 AU, leaving little material available for planet formation. In this paper, we attempt to model a disk around HD188753, exploring a range of parameters constrained by observations of protoplanetary disks. We find that the in situ formation of the planet around HD188753 is extremely unlikely, and that the planet must have formed before the capture of the close stellar companion. Subject headings: stars: individual (HD 188753) — planetary systems: protoplanetary disks — planetary systems: formation
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