Radio Line Observations Of Molecular And Isotopic Species In Comet C/1995 O1 (Hale-Bopp)

@article{Despois1997RadioLO,
  title={Radio Line Observations Of Molecular And Isotopic Species In Comet C/1995 O1 (Hale-Bopp)},
  author={D. Despois},
  journal={Earth, Moon, and Planets},
  year={1997},
  volume={79},
  pages={103-124}
}
  • D. Despois
  • Published 1997
  • Physics
  • Earth, Moon, and Planets
We present here a review of the radio observations of the remarkable comet Hale-Bopp C/1995 O1 in which most major radio astronomical facilities have been involved. These observations started in August 1995, soon after the discovery of the comet (it was then at ∼7 AU from the sun), and well before its perihelion on April 1st, 1997; they are still going on, hopefully up to end of 1998. Extended cartographies have been obtained using multibeam receivers and on-the-fly techniques. High spatial… Expand
The composition of ices in comet C/1995 O1 (Hale-Bopp) from radio spectroscopy
From radio spectroscopic observations of comets, more than 22 molecules, radicals and ions, plus several isotopologues, were detected, the majority of them being recently revealed in comets C/1996 B2Expand
Lessons of Comet Hale-Bopp for Coma Chemistry: Observations and Theory
Many new cometary molecules — both parents and daughters — were detected in the exceptionally productive comet C/1995 O1 (Hale-Bopp).The space distribution of several of these species could beExpand
Infrared Observations Of Volatile Molecules In Comet Hale-Bopp
Infrared observations of comets C/1996 B2 (Hyakutake) and C/1995 O1 (Hale-Bopp) benefited from the high spectral resolution and sensitivity of échelle spectrometers now equipping ground-basedExpand
Interferometric imaging of carbon monoxide in comet C/1995 O1 (Hale-Bopp): evidence of a strong rotating jet
Observations of the CO J(1-0) 115 GHz and J(2-1) 230 GHz lines in comet C/1995 O1 (Hale-Bopp) were performed with the IRAM Plateau de Bure interferometer on 11 March, 1997. The observations wereExpand
Ion composition and solar wind interaction: Observations of comet C/1995 O1 (Hale-Bopp)
The extraordinary brightness of comet Hale-Bopp (C/1995 O1) offered the rare opportunity to investigate its ion tail by observations over a wide range of wavelengths. For the first time, ion emissionExpand
First observation of CO at 345 GHz in the atmosphere of Saturn with the JCMT. New constraints on its origin
Abstract We have performed the first observation of the CO(3-2) spectral line in the atmosphere of Saturn with the James Clerk Maxwell Telescope. We have used a transport model of the atmosphere ofExpand
On the chemistry of CS and NS in cometary comae
Abstract We have developed a multifluid chemical model of cometary comae which is an improvement to a recent work by Canaves et al. [Canaves, M.V., de Almeida, A.A., Boice, D.C., Sanzovo, G.C.,Expand
A Survey of Organic Volatile Species in Comet C/1999 H1 (Lee) Using NIRSPEC at the Keck Observatory
The organic volatile composition of the long-period comet C/1999 H1 (Lee) was investigated using the —rst of a new generation of cross-dispersed cryogenic infrared spectrometers (NIRSPEC, at the KeckExpand
Methylammonium methylcarbamate thermal formation in interstellar ice analogs: a glycine salt precursor in protostellar environments
Context. Analyses of dust cometary grains collected by the Stardust spacecraft have shown the presence of amines and amino acids molecules, and among them glycine (NH2CH2COOH). We show how theExpand
Hcn and Hnc in Comets C/2000 Wm1 (Linear) and C/2002 C1 (Ikeya-Zhang)
TLDR
The HNC/HCN ratio in comet Ikeya-Zhang appears to increase with decreasing heliocentric distance, indicating that the HNC is produced at least in part by processes in the cometary coma (atmosphere) and is not simply a constituent of the nuclear ices. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 62 REFERENCES
A Molecular Survey of Comet C/1995 O1 (Hale-Bopp) at the IRAM Telescopes
Spectroscopic observations of comet Hale-Boppwere undertaken near perihelion at millimetre wavelengths with the Institut de Radioastronomie Millimétrique (IRAM) telescopes at Plateau de BureExpand
New Molecular Species in Comet C/1995 O1 (Hale-Bopp) Observed with the Caltech Ssubmillimeter Observatory
We present millimeter-wave observations of HNCO, HC3N, SO, NH2CHO, H13CN, and H3O+ in comet C/1995 O1 (Hale-Bopp)obtained in February–April, 1997 with the Caltech Submillimeter Observatory (CSO).Expand
Infrared Spectroscopy of Comet Hale-Bopp
High resolution (λ/δλ ∼ 20,000) spectra of comet C/1995 O1 (Hale-Bopp) in the 2–5 μm region were obtained during UT 2–5 March 1997 using CSHELL at the NASA Infrared Telescope Facility (IRTF) on MaunaExpand
Evidences for extended sources and temporal modulations in molecular observations of C/1995 O1 (Hale-Bopp) at the IRAM interferometer
Comet C/1995 O1 (Hale-Bopp) has been observed on October 5 and 25, 1996 and from March 6 to March 22, 1997 with the Institut de Radioastronomie Millimétrique (IRAM) interferometer at Plateau de BureExpand
C/1995 O1 (Hale-Bopp): Gas Production Curves And Their Interpretation
The discovery of C/1995 O1 (Hale-Bopp) at 7 AU from the Sun provided the first opportunity to follow the activity of a bright comet over a large range of heliocentric distances rh. Production ratesExpand
Long-term Evolution of the Outgassing of Comet Hale-Bopp From Radio Observations
C/1995 O1 (Hale-Bopp) has been observed on a regular basis since August 1995 at millimetre and submillimetre wavelengths using IRAM, JCMT, CSO and SEST radio telescopes. The production rates of eightExpand
Spectroscopic Observations of Comet C/1996 B2 (Hyakutake) with the Caltech Submillimeter Observatory
Abstract The apparition of Comet C/1996 B2 (Hyakutake) offered an unexpected and rare opportunity to probe the inner atmosphere of a comet with high spatial resolution and to investigate withExpand
Substantial outgassing of CO from comet Hale–Bopp at large heliocentric distance
TLDR
The detection of CO emission from Hale–Bopp is reported, at levels indicating a very large rate of outgassing, and it is anticipated that future observations will reveal the onset of sublimation of other volatile species as the comet continues its present journey towards the Sun. Expand
Infrared Observations Of Volatile Molecules In Comet Hale-Bopp
Infrared observations of comets C/1996 B2 (Hyakutake) and C/1995 O1 (Hale-Bopp) benefited from the high spectral resolution and sensitivity of échelle spectrometers now equipping ground-basedExpand
K-band Radio Observations of Comet Hale-Bopp: Detections of Ammonia and (Possibly) Water
K-band radio observations of comet Hale-Bopp (C/1995 O1) were conducted in March/April 1997 at the 100-m Telescope of the Max-Planck-Institut für Radioastronomie. Emission was firmly detected fromExpand
...
1
2
3
4
5
...