White, G.J. and Fridlund, C.V.M. and Bergman, P. and Beardsmore, A. and Liseau, R. and Price, M. and Phillips, R.R. (2006) Methanol in the L1551 circumbinary torus. Astrophysical Journal, 651 (1). L41-L44. ISSN 0004-637X.
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We report observations of gaseous methanol in an edge-on torus surrounding the young stellar object L1551 IRS 5. The peaks in the torus are separated by similar to 10,000 AU from L1551 IRS 5 and contain similar to 0.03 M-circle plus of cold CH3OH. CH3OH. We infer that the CH3OH abundance increases in the outer part of the torus, probably as a result of methanol evaporation from dust grain surfaces heated by the shock luminosity associated with the shocks associated with the jets of an externally located X-ray source. Any methanol released in such a cold environment will rapidly freeze again, spreading CH3OH throughout the circumbinary torus to nascent dust grains, planetesimals, and primitive bodies. These observations probe the initial chemical conditions of matter infalling onto the disk.
|Additional information:||White, Glenn J. Fridlund, C. W. M. Bergman, P. Beardsmore, A. Liseau, Rene Price, M. Phillips, R. R. 34 UNIV CHICAGO PRESS Part 2 102PN|
|Uncontrolled keywords:||ISM : general; ISM : individual (HH 154, L1551, L1551 IRS 5); ISM : jets and outflows|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences|
|Depositing User:||Maggie Francis|
|Date Deposited:||10 Sep 2008 15:03|
|Last Modified:||08 Jun 2012 13:54|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/10928 (The current URI for this page, for reference purposes)|
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