Yu Dai et al. 2010 The Astronomical Journal 139 626 doi:10.1088/0004-6256/139/2/626
MILLIMETER DUST EMISSION IN THE GQ LUP SYSTEM
FREE ISSUEYu Dai1,2, David J. Wilner2, Sean M. Andrews2,4 and Nagayoshi Ohashi3
Show affiliationsWe present SubMillimeter Array observations of the GQ Lup system at 1.3 mm wavelength with 0
4 (~60 AU) resolution. Emission is detected from the position of the primary star, GQ Lup A, and is marginally resolved. No emission is detected from the substellar companion, GQ Lup B, 07 away. These data, together with models of the spectral energy distribution, suggest a compact disk around GQ Lup A with mass ~3 M Jup, perhaps truncated by tidal forces. There is no evidence for a gap or hole in the disk that might be the signature of an additional inner companion body capable of scattering GQ Lup B out to ~100 AU separation from GQ Lup A. For GQ Lup B to have formed in situ, the disk must have been much more massive and extended.
- Keywords
circumstellar matter; protoplanetary disks; stars: individual (GQ Lup)
- Dates
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Issue 2 (2010 February)
Received 2009 September 17, accepted for publication 2009 December 7
Published 2010 January 12
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Millimeter Dust Emission in the GQ Lup System
Yu Dai et al. 2010 The Astronomical Journal 139 626
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