Abstracts & Registration

["John C. Pearson" <John.C.Pearson@jpl.nasa.gov>]

Dear Workshop Organizers,

Attached are two abstracts for presentation.  If there is the option for 
oral presentation I would prefer to give the paper on "THz Spectroscopy and 
Spectroscopic Database for Astrophysics."   Otherwise posters are fine.

Since it is nearly impossible to get JPL to issue a check early, I will pay 
the late fee when I arrive.

John Pearson

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John C. Pearson
Jet Propulsion Laboratory
Mail Stop 301-429
4800 Oak Grove Dr
Pasadena, CA 91109
Phone: +1-818-354-6822
Fax: +1-818-393-2430
Email: John.C.Pearson@jpl.nasa.gov
********************************************* 
THz Spectroscopy and Spectroscopic Database for Astrophysics

Authors:

J.C. Pearson
B.J. Drouin

Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 301-429, 4800 Oak Grove Dr., Pasadena, CA 91109

Abstract:

Molecule specific astronomical observations rely on precisely determined laboratory molecular data for interpretation.  The Herschel Heterodyne Instrument for Far Infrared, a suite of SOFIA instruments and ALMA are each well placed to expose the limitations of available molecular physics data and spectral line catalogs.  Herschel and SOFIA will observe in high spectral resolution over the entire far infrared range. Accurate data to previously unimagined frequencies including infrared ro-vibrational and ro-torsional bands will be required for interpretation of the observations.  Planned ALMA observations with a very small beam will reveal weaker emission features requiring accurate knowledge of higher quantum numbers and additional vibrational states.  Historically, laboratory spectroscopy has been at the front of submillimeter technology development, but now astronomical receivers have an enormous capability advantage.  Additionally, rotational spectroscopy is a relatively mature field attracting little interest from students and funding agencies. Molecular data base maintenance is tedious and difficult to justify as research.  This severely limits funding opportunities even though data bases require a similar level of expertise.  We report the application of some relatively new receiver technology into a simple solid state THz spectrometer that has the performance required to collect the laboratory data required by astronomical observations. Further detail on the lack of preparation for upcoming missions by the JPL spectral line catalog is given.


Laboratory Spectroscopy of CH+ and isotopic CH

J.C. Pearson
B.J. Drouin

Jet Propulsion Laboratory, California Institute of Technology, Mail Stop 301-429, 4800 Oak Grove Dr., Pasadena, CA 91109

Abstract:

The A singlet Pi to X singlet Sigma electronic band of the CH+ ion has been used as a probe of the physical and dynamical conditions of the ISM for 65 years. In spite of being one of the first molecular species observed in the ISM and the very large number of subsequent observations with large derived column densities, the pure rotational spectra of CH+ has remained elusive in both the laboratory and in the ISM as well. We report the first laboratory measurement of the pure rotation of the CH+ ion and discuss the detection of 13CH+ in the ISM.  Also reported are the somewhat unexpected chemical conditions that resulted in laboratory production.




Registration form
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Last name: Pearson
First name: John
Middle name/initial: C
Affiliation: Jet Propulsion Laboratory, California Institute of Technology
Street Address: Mail Stop 301-429, 4800 Oak Grove Dr. 
City: Pasadena
State: CA
Postal Code: 91109
Country: USA
Tel:818-354-6822
Fax: 818-393-2430
E mail: John.C.Pearson@jpl.nasa.gov
Citizenship: USA
Abstract title: 
1) THz Spectroscopy and Spectroscopic Database for Astrophysics
2) Laboratory Spectroscopy of CH+ and isotopic CH

Special requirements: None