High-Resolution lambda = 2.7 Millimeter Observations of L1551 IRS 5

Details High-Resolution lambda = 2.7 Millimeter Observations of L1551 IRS 5 High-Resolution lambda = 2.7 Millimeter Observations of L1551 IRS 5

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...484l.157l&link_type=abstract

Astrophysical Journal Letters v.484, p.L157

Astronomy and Astrophysics

Astronomy

56

Stars: Circumstellar Matter, Stars: Formation, Stars: Binaries: Close, Stars: Individual Alphanumeric: L1551 Irs 5, Infrared: Stars, Radio Continuum: Stars

Scientific paper

We present subarcsecond resolution imaging of the lambda = 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 lambda = 2 cm and lambda = 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 Msolar for the northern circumstellar disk, 0.009 Msolar for the southern circumstellar disk, 0.04 Msolar for the circumbinary material, and 0.28 Msolar for the envelope.

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