Fiberoptically Multiplexed Medium Resolution Spectroscopy from the WIYN Telescope, Singlet D Neutral Oxygen, NH2, and H2O+

Details Fiberoptically Multiplexed Medium Resolution Spectroscopy from the WIYN Telescope, Singlet D Neutral Oxygen, NH2, and H2O+ Fiberoptically Multiplexed Medium Resolution Spectroscopy from the WIYN Telescope, Singlet D Neutral Oxygen, NH2, and H2O+

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997em%26p...78...99a&link_type=abstract

Earth, Moon, and Planets, v. 78, Issue 1/3, p. 99-104 (1997).

Physics

8

Comet, Multi-Object Spectrograph

Scientific paper

The WIYN 3.5-meter telescope and its Multi-Object Spectrograph (MOS) have been used to obtain simultaneous spectra at many points in the coma of Comet Hale-Bopp. Between 1996 October and 1997 April in excess of 7500 individual spectra were obtained, typically 96 at a time. On six nights the “Hydra” fiber positioner was used to sample a ring pattern of points about the nucleus with a minimum spacing of 40 arc seconds and a maximum radius of 22.5 arc minutes. On four nights a new “Densepak” fiber cable was used. In this configuration a 7 × 13 rectangular pattern of 91, 3 arc second fibers on 4 arc second centers was used. In most cases the bench spectrograph was used in the echelle mode with an interference filter to isolate a single order. The wavelength range from 6100 Å to 6400 Å was recorded with resolution of approximately 15,000. This spectral region contains the emission features of [OI], C2, NH2and H2O+. From this mass of data we are beginning to extract the radial, azimuthal and temporal variations of many different spectral features. The radial profiles of [O I] λ6300 Å and NH2 are reasonably well representable by the Haser model formalism, that of H2O+ is not.

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