TY - JOUR
T1 - High-resolution a = 2.7 millimeter observations of L1551 IRS 5
T2 - A protobinary system?
AU - Looney, Leslie W.
AU - Mundy, Lee G.
AU - Welch, W. J.
N1 - Funding Information:
1The BIMA array is operated by the Berkeley-Illinois-Maryland Association under funding from the National Science Foundation.
Funding Information:
We thank the Hat Creek staff for their efforts in the construction and operation of the long baselines array. We also thank the referee, Jocelyn Keene, and Oliver Lay for their comments. This work was supported by NSF grants NSF-FD93-20238 and AST-9314847. L. G. M. acknowledges support from NASA grant NAGW-3066.
PY - 1997
Y1 - 1997
N2 - We 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.
AB - We 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.
KW - Binaries: close
KW - Circumstellar matter
KW - Infrared: stars
KW - Radio continuum: stars
KW - Stars: formation
KW - Stars: individual (L1551 IRS 5)
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U2 - 10.1086/310795
DO - 10.1086/310795
M3 - Article
AN - SCOPUS:21744434438
SN - 0004-637X
VL - 484
SP - L157-L160
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2 PART II
ER -