Constraints on the Formation of the Planet Around HD188753A

Abstract

The claimed discovery of a Jupiter-mass planet in the close triple star system HD 188753 poses a problem for planet formation theory. A circumstellar disk around the planet's parent star would be truncated close to the star, leaving little material available for planet formation. In this paper, we attempt to model a protoplanetary disk around HD 188753A using a fairly simple alpha-disk model, exploring a range of parameters constrained by observations of T Tauri-type stars. The disk is truncated to within 1.5 to 2.7 AU, depending on model parameters. We find that the in situ formation of the planet around HD 188753A is implausible.

arXiv commentAccepted version, to appear in ApJ. 23 pages, 5 figures (3 in color)

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Cited by in corpus (13)

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• Planet Formation in Binary Stars: The case of Gamma Cephei
• On the Likelihood of Planet Formation in Close Binaries
• Disk Truncation and Planet Formation in gamma Cephei
• Surface Geometry of Protoplanetary Disks Inferred From Near-Infrared Imaging Polarimetry
• Detection and Characterization of Planets in Binary and Multiple Systems
• No evidence of a hot Jupiter around HD 188753 A
• A Comparison of Spectroscopic versus Imaging Techniques for Detecting Close Companions to Kepler Objects of Interest
• The Stability and Dynamics of Planets in Tight Binary Systems
• Forming Different Planetary Systems
• Effects of Proxima Centauri on Planet Formation in Alpha Centauri
• Observational Techniques for Detecting Planets in Binary Systems
• A distant brown dwarf coplanar to a warm Jupiter and a hot super-Earth