Groenewegen, M.

published in Herschel Space Observatory Proposal, id.2317, pp. 2317 (2012)

Abstract: This DDT proposal is the 'successor' to proposal DDT_mgroen01_6. In the original proposal we argued that it is possible to obtain a phase-lag distance to the well-known Carbon star CW Leo, and obtained 2 epochs of SPIRE time. In this proposal we present first results and demonstrate that the method works and present a first distance estimate. The dominant error is in the phase-lag, and we ask for 2 additional epochs to reduce this error, and obtain a more precise and accurate distance.

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