AAS 195th Meeting, January 2000
Session 84. Submillimeter Wave Astronomy Satellite
Display, Friday, January 14, 2000, 9:20am-6:30pm, Grand Hall

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[84.02] SWAS [CI] Observations towards the High Latitude Cloud MCLD 123.5+24.9

F. Bensch (Univ. of Cologne), M.L.N. Ashby, E.A. Bergin, J. Carpenter, S.C. Kleiner, G.J Melnick, B.M. Patten, R. Plume, J.R. Stauffer, V. Tolls, Z. Wang, Y.F. Zhang (CfA), P.F. Goldsmith (Cornell U., NAIC), M. Harwit (Cornell U.), N.R. Erickson, J.E. Howe, R.L. Snell (UMass, Amherst), D.A. Neufeld (JHU), D.G. Koch (NASA Ames), R. Schieder, G. Winnewisser (Univ. of Cologne), G. Chin (NASA Goddard)

We present SWAS observations of the 3P1 arrow 3P0 fine-structure emission of neutral carbon ([CI]) towards the high latitude cloud MCLD 123.5+24.9, a translucent cloud located in the Polaris Flare. Observations were made towards 10 positions along a cut from the edge of the molecular cloud towards regions bright in 12CO 2arrow1. The peak temperature of the spectral line typically is 0.3-0.5\,K for positions where [CI] emission is detected. Preliminary results of a comparison to ground based CO observations suggest that the [CI] emission is correlated with the 12CO 2arrow1 rather than the 13CO 2arrow1 emission. This is in contrast to the findings for star-forming molecular clouds, where a correlation of [CI] and low rotational transitions of 13CO is noted.

{F.B.\ is supported by the Deutsches Zentrum für} Luft- und Raumfahrt (DLR grant no.\ 051311 54799 531060.03 SWAS)}

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