MILLIMETER DUST EMISSION IN THE GQ LUP SYSTEM

Journal Article · Mon Feb 15 04:00:00 EST 2010 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/139/2/626; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21301362

Yu, Dai ^[1]; Wilner, David J; Andrews, Sean M ^[2]; Ohashi, Nagayoshi ^[3]

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1. Physics Department, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467 (United States)
2. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
3. Institute of Astronomy and Astrophysics, Academia Sinica, P.O. Box 23-141, Taipei 106, Taiwan (China)

We present SubMillimeter Array observations of the GQ Lup system at 1.3 mm wavelength with 0.''4 ({approx}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, 0.''7 away. These data, together with models of the spectral energy distribution, suggest a compact disk around GQ Lup A with mass {approx}3 M {sub 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 {approx}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.

• OSTI ID: 21301362
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 2 Vol. 139; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DUSTS
EMISSION
ENERGY SPECTRA
PROTOPLANETS
SCATTERING
STARS