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dc.creatorFriedel, D. N.en_US
dc.creatorSnyder, L. E.en_US
dc.creatorLooney, L. W.en_US
dc.creatorDickel, H. R.en_US
dc.creatorRemijan, Anthony J.en_US
dc.creatorPalmer, Patricken_US
dc.creatorDe Pater, Imkeen_US
dc.creatorForster, J. R.en_US
dc.creatorKraybill, C.en_US
dc.creatorWright, M. C. H.en_US
dc.creatorHogerheijde, M. R.en_US
dc.creatorA'Hearn, M. F.en_US
dc.creatorBlake, Geoffrey A.en_US
dc.date.accessioned2008-01-11T21:59:56Z
dc.date.available2008-01-11T21:59:56Z
dc.date.issued2005en_US
dc.identifier2005-WF-02en_US
dc.identifier.urihttp://hdl.handle.net/1811/30657
dc.descriptionAuthor Institution: University of Illinois, Dept. of Astronomy, 1002 W. Green St, Urbana, IL 61801; NASA Goddard Space Flight Center, Space and Earth Data Computing Division, Code 930, Greenbelt, MD 20771; National Research Council Resident Research Associate; Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637; Department of Astronomy, University of California, Berkeley, CA 94720; Leiden Observatory, PO Box 9513, 2300 RA, Leiden, The Netherlands; Department of Astronomy, University of Maryland, College Park MD 20742-2421; Division of Geological and Planetary Sciences; Division of Chemistry and Chemical Engineering; California Institute of Technology 150-21, Pasadena, CA 91125en_US
dc.description.abstractWe present interferometric detections of HCN in comets LINEAR (C/2002 T7) and NEAT (C/2001 Q4) with the Berkeley-Illinois-Maryland Association (BIMA) Array in D-configuration. We detected the HCN $J=1-0$ emission line in both comets. With a $25.\!\!^{\prime\prime} 4\times20.\!\!^{\prime\prime} 3$ synthesized beam around Comet LINEAR, we found a total beam averaged HCN column density of $<N_T> = 8.5\pm2.8\times10^{12}$ cm$^{-2}$, and a HCN production rate of Q(HCN)=$8.4\pm2.8\times10^{26}$ s$^{-1}$, giving a production rate ratio of HCN relative to H$_2$O of $\sim1.6\pm0.5\times10^{-3}$ and relative to CN of $\sim1.1\pm0.4$. With a $21.\!\!^{\prime\prime} 3\times17.\!\!^{\prime\prime} 5$ synthesized beam around Comet NEAT, we found a total beam averaged HCN column density of $<N_T> = 1.0\pm0.5\times10^{12}$ cm$^{-2}$, and a HCN production rate of Q(HCN)=$9.2\pm5.1\times10^{25}$ s$^{-1}$ giving a production rate ratio of HCN relative to H$_2$O of $\sim0.8\pm0.4\times10^{-3}$ and relative to CN of $\sim0.3\pm0.2$. For both comets, the production rates relative to H$_2$O are similar to previous comet observations. For Comet LINEAR the production rate relative to CN is consistent with HCN being the primary parent species of CN, while for Comet NEAT it is too low for this to be the case.en_US
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleBIMA ARRAY DETECTIONS OF HCN IN COMETS LINEAR (C/2002 T7) AND NEAT (C/2001 Q4)en_US
dc.typearticleen_US


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