Issue |
A&A
Volume 442, Number 3, November II 2005
|
|
---|---|---|
Page(s) | 1121 - 1126 | |
Section | Planets and planetary systems | |
DOI | https://doi.org/10.1051/0004-6361:20053047 | |
Published online | 14 October 2005 |
O(
S) and O(
D) emission lines in the spectrum of 153P/2002 C1 (Ikeya-Zhang)
1
INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica (IASF), Area di Ricerca di Tor Vergata, via del Fosso del Cavaliere 100, 00133 Roma, Italy e-mail: mariateresa.capria@rm.iasf.cnr.it
2
INAF - Padua Observatory, vicolo dell'Osservatorio, Padua, Italy
3
Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivarundrum 695022, India
Received:
13
March
2005
Accepted:
10
June
2005
High resolution spectroscopy observation of comet 153P/2002 C1 Ikeya-Zhang was performed on April 20, 2002 with the echelle
spectrograph SARG on the 3.5 m Telescopio Nazionale Galileo in La Palma. The atomic O emission lines at 5577, 6360 and 6363 Å are
clearly visible in the spectrum. We determined the intensity ratio of the green line to the sum of the red lines. In order to verify the
hypothesis that water is the main parent species of these emissions, the result was compared with the value obtained from a coupled
chemistry-transport model. The measured value for the green to red ratio, , agrees quite well with the value obtained from
the model. This led us to conclude that during the observation water was the parent species of atomic O lines.
Key words: comets: individual: 153P/2002 C1 Ikeya-Zhang / comets: general
© ESO, 2005
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