Observations of the 18-cm OH lines of comet 103P/Hartley 2 at Nançay in support to the EPOXI and Herschel missions
arXiv:1203.6450 · doi:10.1016/j.icarus.2012.03.033
Abstract
The 18-cm radio lines of the OH radical were observed in comet 103P/Hartley 2 with the Nançay radio telescope in support to its flyby by the EPOXI mission and to observations with the Herschel Space Observatory. The OH lines were detected from 24 September to 15 December 2010. These observations are used to estimate the gas expansion velocity within the coma to 0.83 \pm 0.08 km/s in October 2010. The water production increased steeply but progressively before perihelion, and reached 1.9 \pm 0.3 X 10E28 s-1 just before the EPOXI flyby.
Accepted for publication in Icarus (6 pages, 4 figures)
References in corpus (6)
- Temporal and Spatial Aspects of Gas Release During the 2010 Apparition of Comet 103P/Hartley-2
- The Highly Unusual Outgassing of Comet 103P/Hartley 2 from Narrowband Photometry and Imaging of the Coma
- Water Production by Comet 103P/Hartley 2 Observed with the SWAN Instrument on the SOHO Spacecraft
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Cited by in corpus (5)
- The Main Belt Comets and Ice in the Solar System
- The Highly Unusual Outgassing of Comet 103P/Hartley 2 from Narrowband Photometry and Imaging of the Coma
- Searches for HCl and HF in comets 103P/Hartley 2 and C/2009 P1 (Garradd) with the Herschel space observatory
- Gas and dust productions of comet 103P/Hartley 2 from millimetre observations: interpreting rotation-induced time variations
- Ground-based Multiwavelength Observations of Comet 103P/Hartley 2