SCSU CometWatchers

Mm-wave Spectroscopy of Comet Hale-BoppThis research is part of a larger on-going program to search for similarities and/or differences in the carbon budgets of short-period and long-period comets. These observations will test the hypothesis that these two groups of comets experienced significant differences in physical processing over the millenia due to different origins. All spectra were obtained with the NRAO 12-m telescope.Below is a table of (most of) our spectroscopic data on comet Hale-Bopp. Example spectra are shown here. Observations of Comet Hale-Bopp Obtained with NRAO 12-m telescope

`Species Freq.`	`r (AU)`	D `(AU)`	`Integ. time (hours)`	`UT date`		`Species Freq.`	`r (AU)`	D `(AU)`	`Integ. time (hours)`	`UT date`

`CO 230.5 GHz`	`5.93`	`6.83`	`4.4`	`951209`		`HCOOH 225.5 GHz`	`0.91`	`1.34`	`0.5`	`970330`
`CO 230.5 GHz`	`5.92`	`6.83`	`4.4`	`951210`		`HCOOH 225.5 GHz`	`0.92`	`1.43`	`3.4`	`970408`
`CO 230.5 GHz`	`5.11`	`5.63`	`3.7`	`960305`
`CO 230.5 GHz`	`5.10`	`5.63`	`2.4`	`960306`		`CH3OH 145.1 GHz`	`4.97`	`5.28`	`3.0`	`960320`
`CO 230.5 GHz`	`5.01`	`5.37`	`4.0`	`960316`		`CH3OH 145.1 GHz`	`4.70`	`4.55`	`5.6`	`960416`
`CO 230.5 GHz`	`4.98`	`5.30`	`5.9`	`960319`		`CH3OH 145.1 GHz`	`4.55`	`4.16`	`4.4`	`960501`
`CO 230.5 GHz`	`4.96`	`5.26`	`1.5`	`960320`		`CH3OH 145.1 GHz`	`4.38`	`3.73`	`2.9`	`960518`
`CO 230.5 GHz`	`4.90`	`5.09`	`2.5`	`960327`		`CH3OH 145.1 GHz`	`4.30`	`3.56`	`2.9`	`960523`
`CO 230.5 GHz`	`4.89`	`5.06`	`2.0`	`960328`		`CH3OH 145.1 GHz`	`4.17`	`3.29`	`6.1`	`960607`
`CO 230.5 GHz`	`4.87`	`5.01`	`2.6`	`960330`		`CH3OH 145.1 GHz`	`3.98`	`2.99`	`1.0`	`960625`
`CO 230.5 GHz`	`4.86`	`4.98`	`2.7`	`960331`		`CH3OH 145.1 GHz`	`3.86`	`2.86`	`1.0`	`960706`
`CO 230.5 GHz`	`4.85`	`4.96`	`3.2`	`960401`		`CH3OH 145.1 GHz`	`2.70`	`3.04`	`1.5`	`961017`
`CO 230.5 GHz`	`4.84`	`4.93`	`3.5`	`960402`		`CH3OH 145.1 GHz`	`2.32`	`3.01`	`0.2`	`961117`
`CO 230.5 GHz`	`4.78`	`4.77`	`1.6`	`960408`		`CH3OH 145.1 GHz`	`1.97`	`2.79`	`0.2`	`961215`
`CO 230.5 GHz`	`4.71`	`4.58`	`1.5`	`960415`		`CH3OH 145.1 GHz`	`1.96`	`2.78`	`0.5`	`961215`
`CO 230.5 GHz`	`4.56`	`4.18`	`5.3`	`960430`		`CH3OH 145.1 GHz`	`1.74`	`2.55`	`2.4`	`970101`
`CO 230.5 GHz`	`4.38`	`3.75`	`5.9`	`960517`		`CH3OH 145.1 GHz`	`1.53`	`2.26`	`1.9`	`970118`
`CO 230.5 GHz`	`4.37`	`3.71`	`3.2`	`960518`		`CH3OH 145.1 GHz`	`1.37`	`2.00`	`1.2`	`970131`
`CO 230.5 GHz`	`4.34`	`3.66`	`3.9`	`960521`		`CH3OH 145.1 GHz`	`1.20`	`1.72`	`1.0`	`970215`
`CO 230.5 GHz`	`4.33`	`3.63`	`3.6`	`960522`		`CH3OH 165.2 GHz`	`1.20`	`1.71`	`0.8`	`970215`
`CO 230.5 GHz`	`4.18`	`3.18`	`6.9`	`960606`		`CH3OH 165.1 GHz`	`1.05`	`1.46`	`0.7`	`970302`
`CO 230.5 GHz`	`3.99`	`3.00`	`3.5`	`960624`		`CH3OH 145.1 GHz`	`0.98`	`1.35`	`0.6`	`970312`
`CO 230.5 GHz`	`3.86`	`2.86`	`2.4`	`960706`		`CH3OH 145.1 GHz`	`0.96`	`1.33`	`1.0`	`970315`
`CO 230.5 GHz`	`3.84`	`2.84`	`0.7`	`960708`		`CH3OH 241.8 GHz`	`0.91`	`1.34`	`0.7`	`970329`
`CO 115.3 GHz`	`3.03`	`2.92`	`1.5`	`960918`		`CH3OH 165.1 GHz`	`0.91`	`1.34`	`1.1`	`970329`
`CO 115.3 GHz`	`3.02`	`2.93`	`1.6`	`960919`		`CH3OH 241.8 GHz`	`0.92`	`1.43`	`3.5`	`970408`
`CO 115.3 GHz`	`2.70`	`3.04`	`2.1`	`961016`		`CH3OH 241.8 GHz`	`1.02`	`1.70`	`2.9`	`970426`
`CO 115.3 GHz`	`2.68`	`3.04`	`1.0`	`961018`		`CH3OH 145.1 GHz`	`1.02`	`1.70`	`5.0`	`970426`
`CO 230.5 GHz`	`2.56`	`3.05`	`3.5`	`961027`		`CH3OH 145.1 GHz`	`1.25`	`2.09`	`1.1`	`970519`
`CO 115.3 GHz`	`2.43`	`3.04`	`3.6`	`961107`		`CH3OH 241.8 GHz`	`1.47`	`2.37`	`2.1`	`970607`
`CO 115.3 GHz`	`2.34`	`3.02`	`1.6`	`961114`		`CH3OH 241.8 GHz`	`1.75`	`2.62`	`1.5`	`970629`
`CO 230.5 GHz`	`2.32`	`3.01`	`1.0`	`961116`
`CO 230.5 GHz`	`1.97`	`2.79`	`0.9`	`961214`		`CN 226.9 GHz`	`1.05`	`1.46`	`2.2`	`970302`
`CO 230.5 GHz`	`1.74`	`2.55`	`1.8`	`970101`		`CN 226.9 GHz`	`0.97`	`1.34`	`1.1`	`970313`
`CO 230.5 GHz`	`1.54`	`2.28`	`0.8`	`970117`		`CN 226.9 GHz`	`0.96`	`1.33`	`0.3`	`970315`
`CO 230.5 GHz`	`1.37`	`2.01`	`0.8`	`970131`		`CN 226.9 GHz`	`0.91`	`1.35`	`1.8`	`970331`
`CO 230.5 GHz`	`1.21`	`1.73`	`1.6`	`970214`
`CO 230.5 GHz`	`1.06`	`1.47`	`3.4`	`970301`		`HNC 272.0 GHz`	`1.53`	`2.25`	`2.5`	`970118`
`CO 230.5 GHz`	`0.98`	`1.35`	`2.0`	`970312`		`HNC 272.0 GHz`	`1.37`	`2.01`	`0.8`	`970131`
`CO 230.5 GHz`	`0.96`	`1.34`	`8.4`	`970314`		`HNC 272.0 GHz`	`1.36`	`1.99`	`3.8`	`970201`
`CO 230.5 GHz`	`0.96`	`1.34`	`0.4`	`970315`		`HNC 272.0 GHz`	`1.04`	`1.45`	`0.6`	`970303`
`CO 230.5 GHz`	`0.92`	`1.33`	`4.0`	`970328`		`HNC 272.0 GHz`	`0.91`	`1.34`	`0.6`	`970329`
`CO 230.5 GHz`	`0.91`	`1.35`	`1.2`	`970331`		`HNC 272.0 GHz`	`1.01`	`1.68`	`1.3`	`970425`
`CO 230.5 GHz`	`0.92`	`1.42`	`10.4`	`970407`
`CO 230.5 GHz`	`1.01`	`1.68`	`2.1`	`970425`		`H2CO 225.7 GHz`	`4.69`	`4.53`	`4.4`	`960417`
`CO 230.5 GHz`	`1.25`	`2.09`	`1.5`	`970519`		`H2CO 225.7 GHz`	`4.53`	`4.10`	`5.8`	`960503`
`CO 230.5 GHz`	`1.46`	`2.35`	`4.1`	`970606`		`H2CO 225.7 GHz`	`4.35`	`3.68`	`6.3`	`960520`
`CO 230.5 GHz`	`1.74`	`2.61`	`1.3`	`970628`		`H2CO 225.7 GHz`	`4.00`	`3.02`	`3.8`	`960623`
`CO 230.5 GHz`	`1.75`	`2.62`	`6.4`	`970629`		`H2CO 225.7 GHz`	`2.32`	`3.01`	`0.5`	`961117`
`H2CO 225.7 GHz`	`1.97`	`2.79`	`1.6`	`961214`
`HCN 265.9 GHz`	`4.33`	`3.63`	`1.9`	`960522`		`H2CO 218.2 GHz`	`1.96`	`2.78`	`1.2`	`961215`
`HCN 88.6 GHz`	`2.70`	`3.04`	`2.2`	`961016`		`H2CO 225.7 GHz`	`1.96`	`2.78`	`0.6`	`961215`
`HCN 177.3 GHz`	`2.69`	`3.04`	`1.1`	`961017`		`H2CO 218.2 GHz`	`1.54`	`2.28`	`0.9`	`970117`
`HCN 88.6 GHz`	`2.34`	`3.02`	`1.8`	`961114`		`H2CO 225.7 GHz`	`1.54`	`2.27`	`1.0`	`970117`
`HCN 265.9 GHz`	`2.33`	`3.02`	`1.5`	`961115`		`H2CO 225.7 GHz`	`1.37`	`2.01`	`0.3`	`970131`
`HCN 265.9 GHz`	`2.32`	`3.01`	`1.1`	`961116`		`H2CO 150.5 GHz`	`1.37`	`2.00`	`0.5`	`970131`
`HCN 265.9 GHz`	`1.97`	`2.79`	`1.2`	`961214`		`H2CO 225.7 GHz`	`1.36`	`1.99`	`1.6`	`970201`
`HCN 265.9 GHz`	`1.76`	`2.56`	`1.0`	`961231`		`H2CO 225.7 GHz`	`1.21`	`1.73`	`1.2`	`970214`
`HCN 265.9 GHz`	`1.54`	`2.27`	`0.8`	`970117`		`H2CO 225.7 GHz`	`1.20`	`1.72`	`1.1`	`970215`
`HCN 265.9 GHz`	`1.37`	`2.01`	`0.3`	`970131`		`H2CO 218.3 GHz`	`1.20`	`1.72`	`0.9`	`970215`
`HCN 265.9 GHz`	`1.36`	`1.99`	`0.4`	`970201`		`H2CO 225.7 GHz`	`1.05`	`1.46`	`2.3`	`970302`
`HCN 265.9 GHz`	`1.36`	`1.99`	`0.6`	`970201`		`H2CO 225.7 GHz`	`0.98`	`1.35`	`1.0`	`970312`
`HCN 265.9 GHz`	`1.21`	`1.74`	`0.7`	`970214`		`H2CO 225.7 GHz`	`0.92`	`1.33`	`0.5`	`970328`
`HCN 265.9 GHz`	`1.06`	`1.48`	`1.1`	`970301`	`H2CO 225.7 GHz`	`0.92`	`1.33`	`5.6`	`970328`
`HCN 265.9 GHz`	`0.98`	`1.36`	`2.1`	`970312`	`H2CO 225.7 GHz`	`0.91`	`1.35`	`0.1`	`970331`
`HCN 265.9 GHz`	`0.97`	`1.35`	`3.1`	`970313`	`H2CO 225.7 GHz`	`0.91`	`1.35`	`2.3`	`970331`
`HCN 265.9 GHz`	`0.91`	`1.34`	`4.2`	`970329`	`H2CO 225.7 GHz`	`0.92`	`1.40`	`11.0`	`970406`
`HCN 265.9 GHz`	`0.92`	`1.43`	`0.7`	`970408`	`H2CO 225.7 GHz`	`1.02`	`1.69`	`1.9`	`970426`
`HCN 265.9 GHz`	`1.01`	`1.68`	`1.0`	`970425`	`H2CO 225.7 GHz`	`1.25`	`2.09`	`1.2`	`970520`
`HCN 265.9 GHz`	`1.23`	`2.07`	`1.7`	`970518`	`H2CO 225.7 GHz`	`1.47`	`2.37`	`1.7`	`970607`
`HCN 265.9 GHz`	`1.25`	`2.09`	`0.5`	`970519`
`HCN 265.9 GHz`	`1.46`	`2.35`	`2.9`	`970606`	`HCO+ 267.6 GHz`	`0.96`	`1.33`	`0.3`	`970315`
`HCN 265.9 GHz`	`1.73`	`2.61`	`3.6`	`970628`	`HCO+ 267.6 GHz`	`0.96`	`1.33`	`7.0`	`970315`
					`HCO+ 267.6 GHz`	`0.91`	`1.34`	`0.8`	`970330`
`H13CN 144.8 GHz`	`0.91`	`1.35`	`1.5`	`970401`
					`CO+ 236.1 GHz`	`0.97`	`1.35`	`2.5`	`970313`

© Copyright 2001 CometWatchers Document Created On: 09/21/2001 Document Last Modified On: 09/21/2001 E-Mail us your comments and/or suggestions. Supported by the NSF CAREER Program and the NASA/NSF HaleBopp Program.