| Issue |
A&A
Volume 367, Number 3, March I 2001
|
|
|---|---|---|
| Page(s) | 1049 - 1055 | |
| Section | Celestial mechanics and astrometry | |
| DOI | https://doi.org/10.1051/0004-6361:20010008 | |
| Published online | 15 March 2001 | |
A catalogue of emission lines in spectra of Comet C/1995 O1 (Hale-Bopp)*
1
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012, PR China
2
Department of Astronomy, Peking University, Beijing 100871, PR China
3
Beijing Astrophysics Center, Jointly sponsored by the Chinese Academy of Sciences and Peking University, Beijing 100871, P.R. China
Corresponding author: H. W. Zhang, zhw@bac.pku.edu.cn
Received:
29
June
2000
Accepted:
23
November
2000
High-resolution and high signal-to-noise ratio spectra of Comet C/1995 O1 (Hale-Bopp),
which provided continuous wavelength coverage from 5500 Åto 8500 Åand partial
coverage from 4000 Åto 5500 Å,
were obtained with the Coudé Echelle Spectrograph at Beijing Astronomical Observatory on
March 26, 28 and April 22, 1997. In the spectra we found 532 emission features, among
which 459 lines from H, O, Na, C2, C3, CN, CH, NH2 and H2O+ were identified.
The intensity of sodium emission lines at 5890 Å
and 5896 Åon April 22 increased about 5 fold compared to that recorded on March 26 and 28.
The intensity ratio 
of
[O I] is consistent with the formation of excited O atoms from the
photodissociation of H2O.
Key words: comets: general / comet: C/1995 O1 (Hale-Bopp)
© ESO, 2001
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