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High Resolution $lambda$ = 2.7 mm Observations of L1551 IRS5: A Protobinary System? | | Leslie W. Looney
; Lee G. Mundy
; W. J. Welch
; | | Date: |
28 May 1997 | | Subject: | astro-ph | | Abstract: | We present sub-arcsecond resolution imaging of the $lambda$ = 2.7 mm continuum emission from the young, embedded system L1551 IRS5 using the nine-element, high-resolution configuration of the BIMA array. The observed emission arises from two compact sources separated by $0farcs$35, coinciding with the two sources seen at $lambda$ = 2 cm and $lambda$ = 1.3 cm. When the high resolution data is combined with data from two compact configurations, L1551 IRS5 is argued to consist of a protobinary system separated by $sim$50 AU with individual circumstellar disks, a circumbinary structure, and a large-scale envelope. The characteristic masses of the components are: 0.024 M$_{sun}$ for the northern circumstellar disk, 0.009 M$_{sun}$ for the southern circumstellar disk, 0.04 M$_{sun}$ for the circumbinary material, and 0.28 M$_{sun}$ for the envelope. | | Source: | arXiv, astro-ph/9705212 | | Services: | Forum | Review | PDF | Favorites | |
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