m Region: Observations with CSHELL of
C/1995 O1 Hale-Bopp
Infrared Spectroscopy of the 3.0 m Region: Observations with CSHELL of
C/1995 O1 Hale-Bopp
K. Magee-Sauer (Rowan Univ.), M. J. Mumma, M. A. DiSanti, N. Dello Russo (GSFC), T. W. Rettig (Univ. of Notre Dame), R. Novak (Iona College)
We present results of spectroscopic observations of C/1995 O1 Hale-Bopp
on UT dates: February 23/24, April 5/6, 7/8, 8/9, 29/30, and
Apr 30/May 1 1997. The data were obtained using the CSHELL instrument
at the NASA Infrared Telescope Facility on Mauna Kea, Hawaii. Spectra
were obtained with the slit (1" by 30") centered on the nucleus. We
targeted the P- and R- branches of HCN and C 
H and the Q-branch of
NH 
in the infrared region near 3.0 m. The spectral resolution of
CSHELL ( 
) was approximately 2 x 10^4. Detections of numerous ro-vibrational
spectral lines of HCN (P2, P3, P4, P7, P8, R2, R6, R7) and a limited number
of C_2H_2 lines (R1, R3, P3, P7) were achieved. NH_3 was marginally
detected.
Molecular production rates of HCN, C_2H_2, and NH_3, and rotational temperatures for HCN will be presented. Unidentified species common to both Hale-Bopp and Hyakutake will be noted.
This work was supported by the NASA JOVE program, National Science
Foundation RUI grant AST-9619461, Rowan University, and the
NASA Planetary Astronomy Program under RTOP 344-32-03.