Leslie W. Looney et al 1997 ApJ 484 L157 doi:10.1086/310795
High-Resolution λ = 2.7 Millimeter Observations of L1551 IRS 5: A Protobinary System?
FREELeslie W. Looney1, Lee G. Mundy1 and W. J. Welch2
Show affiliationsWe present subarcsecond resolution imaging of the λ = 2.7 mm continuum emission from the young, embedded system L1551 IRS 5 using the nine-element, high-resolution configuration of the BIMA array. The observed emission arises from two compact sources separated by 0
35, coinciding with the two sources seen at λ = 2 cm and λ = 1.3 cm. When the high-resolution data are combined with data from two compact configurations, L1551 IRS 5 is argued to consist of a protobinary system separated by ~50 AU with individual circumstellar disks, a circumbinary structure, and a large-scale envelope. The characteristic masses of the components are 0.024 M
for the northern circumstellar disk, 0.009 M for the southern circumstellar disk, 0.04 M for the circumbinary material, and 0.28 M for the envelope.
- Subject headings
binaries: close; circumstellar matter; infrared: stars; radio continuum: stars; stars: formation; stars: individual (L1551 IRS 5)
- Dates
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Issue 2 (1997 August 1)
Received 1996 September 4, accepted for publication 1997 May 16
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High-Resolution λ = 2.7 Millimeter Observations of L1551 IRS 5: A Protobinary System?
Leslie W. Looney et al 1997 ApJ 484 L157
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