HCN observations of C/Ikeya-Zhang using the NRO 45 m telescope

Details HCN observations of C/Ikeya-Zhang using the NRO 45 m telescope HCN observations of C/Ikeya-Zhang using the NRO 45 m telescope

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..701s&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Physics

Comets: Hcn

Scientific paper

Millimetric spectral-line observations of C/Ikeya-Zhang were performed using the NRO 45m telescope. The rotational transitions of HCN (J=1-0) at 88.63 GHz were detected. The production rate of HCN molecules was about 1027 molecules s-1 after perihelion passage. The out flow velocity of the coma, deduced from the HCN linewidths, is about 1 km s-1. The 5 points mapping of HCN coma in 15 arcsec distances was established in the direction to the Sun, opposite to the Sun and 2 perpendicular direction to the Sun, however, there was no clear solar dependence on the expansion of HCN coma.

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