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dc.creatorMcGuire, Brett A.en_US
dc.creatorFinneran, Ian A.en_US
dc.creatorCarroll, P. Brandonen_US
dc.creatorBlake, Geoffrey A.en_US
dc.date.accessioned2012-07-09T19:21:59Z
dc.date.available2012-07-09T19:21:59Z
dc.date.issued2012en_US
dc.identifier2012-TC-01en_US
dc.identifier.urihttp://hdl.handle.net/1811/52357
dc.descriptionAuthor Institution: Department of Chemistry, California Institute of Technology, Pasadena, CA 91125; Divisions of Geological & Planetary Sciences and Chemistry & Chemical Engineering, California Institute of Technology, Pasadena, CA 91125en_US
dc.description.abstractPolycyclic aromatic hydrocarbons (PAHs) have been proposed as possible carriers of the diffuse interstellar bands, the unidentified infrared features, and as likely precursors for the recently-observed C$_{60}$ and C$_{70}$ fullerenes. While PAHs have been well studied in the laboratory, and ultraviolet through infrared spectral simulations of PAHs can reproduce astronomical spectra reasonably well, several discrepancies still exist. Nitrogen-substituted PAHs, PANHs, have been proposed as a possible explanation for one of the major differences: the peak position of the 6.2 $\mu$m feature. While identification of individual PAH and PANH species from infrared spectra alone is extremely difficult, identification in the mm and sub-mm regimes using heterodyne spectroscopy is far more feasible. The frequently low (or zero) dipole moment of PAHs makes pure-rotational laboratory measurements and astronomical observation difficult. PANHs, however, often have substantial dipole moments, making them ideal targets for laboratory and astronomical studies. We present here the results of a laboratory study of the PANH 1,10-phenanthroline using direct absorption mm/sub-mm spectroscopy. We discuss implications of these results for the astrochemistry of PAHs and PANHs and astronomical searches for such species at radio through (sub)mm wavelengths.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titlePURE ROTATIONAL SPECTROSCOPY OF PANHs I: 1,10-PHENANTHROLINE. IMPLICATIONS OF PANHs IN ASTROPHYSICAL ENVIRONMENTS AND OBSERVATIONAL SPECTRAen_US
dc.typeArticleen_US
dc.typeImageen_US
dc.typePresentationen_US


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