Abstract
We present radio observations of comet 9P/Tempel 1, associated with the Deep Impact mission, made with the Australia Telescope National Facility. Weak 18-cm OH emission was detected with the Parkes 64-m telescope, in data averaged over July 4–6, at a level of 12±3 mJy km/s. The OH emission was increasing, but we stopped observing after July 6. We did not detect the HCN 1-0 with the Mopra 22-m telescope over the period July 2–6. The 3 σ limit was 0.06 K km/s for HCN on July 4 after the impact. We did not detect the HCN 1–0 line, 6.7 GHz CH3OH line or 3.4-mm continuum with the Australia Telescope Compact Array (ATCA) on July 4, giving further limits on any small-scale structure due to an outburst.
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Jones, P.A., Sarkissian, J.M., Burton, M.G., Voronkov, M.A., Filipović, M.D. (2009). Radio Observations from Australia of Comet 9P/Tempel 1 for Deep Impact. In: Käufl, H., Sterken, C. (eds) Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength. Eso Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-76959-0_10
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DOI: https://doi.org/10.1007/978-3-540-76959-0_10
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