ESO Spectrophotometry of Comet 9P/Tempel 1 View Full Text


Ontology type: schema:Chapter      Open Access: True


Chapter Info

DATE

2009-01-01

AUTHORS

M. Weiler , H. Rauer , C. Sterken , J. Knollenberg , E. Jehin , E. Pompei , O. Hainaut , G. P. Tozzi , J. Manfroid

ABSTRACT

abstractThe Deep Impact target comet 9P/Tempel 1 was observed by means of long-slit spectroscopy from two nights before impact up to eight nights after impact, using the ESO VLT UT1, UT2, and ESO NTT telescopes. Spectra covering the complete optical wavelength range were obtained, and information at different position angles in the coma was collected. The data were used to study the gas and dust activity of comet 9P/Tempel 1. Gas production rates before and after impact and the amount of material in the impact cloud were determined. The pre-impact $Afρ$ parameter, the dust production rate and the dust-to-gas mass ratio were derived. A variation of the cometary gas activity with rotation of the nucleus was detected. A difference in the variation of the brightness of the CN gas emission band compared to the variation of the emissions by $\rm C_2$, $\rm C_3$, and $\rm NH_2$ in the inner coma suggests compositional differences between different parts of the surface of comet 9P/Tempel 1’s nucleus. More... »

PAGES

271-275

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-540-76959-0_36

DOI

http://dx.doi.org/10.1007/978-3-540-76959-0_36

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1000571505


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