Modeling the Deep Impact Near-nucleus Observations of H2O and CO2 in Comet 9P/Tempel 1 Using Asymmetric Spherical Coupled Escape Probability
We have applied our asymmetric spherical adaptation of Coupled Escape Probability to the modeling of optically thick cometary comae. Expanding on our previously published work, here we present models including asymmetric comae. Near-nucleus observations from the Deep Impact mission have been modeled...
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description | We have applied our asymmetric spherical adaptation of Coupled Escape Probability to the modeling of optically thick cometary comae. Expanding on our previously published work, here we present models including asymmetric comae. Near-nucleus observations from the Deep Impact mission have been modeled, including observed coma morphology features. We present results for two primary volatile species of interest, H2O and CO2, for comet 9P/Tempel 1. Production rates calculated using our best-fit models are notably greater than those derived from the Deep Impact data based on the assumption of optically thin conditions, both for H2O and CO2 but more so for CO2, and fall between the Deep Impact values and the global pre-impact production rates measured at other observatories and published by Schleicher et al. (2006), Mumma et al. (2005), and Mäkinen et al. (2007). |
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Expanding on our previously published work, here we present models including asymmetric comae. Near-nucleus observations from the Deep Impact mission have been modeled, including observed coma morphology features. We present results for two primary volatile species of interest, H2O and CO2, for comet 9P/Tempel 1. Production rates calculated using our best-fit models are notably greater than those derived from the Deep Impact data based on the assumption of optically thin conditions, both for H2O and CO2 but more so for CO2, and fall between the Deep Impact values and the global pre-impact production rates measured at other observatories and published by Schleicher et al. (2006), Mumma et al. (2005), and Mäkinen et al. 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(2007).</description><subject>Astrophysics</subject><subject>Asymmetry</subject><subject>Carbon dioxide</subject><subject>Comet nuclei</subject><subject>Comets</subject><subject>comets: individual (9P/Tempel 1)</subject><subject>Deep Impact Mission (NASA)</subject><subject>methods: numerical</subject><subject>Modelling</subject><subject>Morphology</subject><subject>Observatories</subject><subject>techniques: spectroscopic</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNptkU9Lw0AQxRdRsFbvHgfEm7H7L5vkKLXagtqCLXhbtpuJTUmTNZsI_Q5-aBMqenEuj5n58YbhEXLJ6K2IZTRioYgDKcJoZLri4REZ_I6OyYBSKgMlordTcub9tm95kgzI13OVYpGX79BsEO4RHcx2ztgGXtDUQdnaAlsP87XH-tM0eVV6qDKY8jmYMoXxnENewrjaYQPJYrTEncMCGKx873nn97tuU-cWXt0GOzVFB7euwBQm3hqHsKirtVnnRd7sz8lJZgqPFz86JKuHyXI8DZ7mj7Px3VOQC6aaIMUkTjPDKM1CRjOjkqT7RgjEzHCVmlRJRaXkFqPYMplwFFZIDDFLlGWWiyG5Ovi6uvpo0Td6W7V12Z3UXKgwUlKqnro-UHnl_gDjtjoOleaaUaldmnXczT8co7rPRfch6D4EfchFfAOCEIBM</recordid><startdate>20180401</startdate><enddate>20180401</enddate><creator>Gersch, Alan M.</creator><creator>A'Hearn, Michael F.</creator><creator>Feaga, Lori M.</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-9362-1193</orcidid></search><sort><creationdate>20180401</creationdate><title>Modeling the Deep Impact Near-nucleus Observations of H2O and CO2 in Comet 9P/Tempel 1 Using Asymmetric Spherical Coupled Escape Probability</title><author>Gersch, Alan M. ; A'Hearn, Michael F. ; Feaga, Lori M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i316t-de98dfa100f510fa69904233eefa26dad6460442ce78c1492e3c34e5ef96c1c23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Astrophysics</topic><topic>Asymmetry</topic><topic>Carbon dioxide</topic><topic>Comet nuclei</topic><topic>Comets</topic><topic>comets: individual (9P/Tempel 1)</topic><topic>Deep Impact Mission (NASA)</topic><topic>methods: numerical</topic><topic>Modelling</topic><topic>Morphology</topic><topic>Observatories</topic><topic>techniques: spectroscopic</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gersch, Alan M.</creatorcontrib><creatorcontrib>A'Hearn, Michael F.</creatorcontrib><creatorcontrib>Feaga, Lori M.</creatorcontrib><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gersch, Alan M.</au><au>A'Hearn, Michael F.</au><au>Feaga, Lori M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modeling the Deep Impact Near-nucleus Observations of H2O and CO2 in Comet 9P/Tempel 1 Using Asymmetric Spherical Coupled Escape Probability</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. J</addtitle><date>2018-04-01</date><risdate>2018</risdate><volume>856</volume><issue>2</issue><issn>0004-637X</issn><eissn>1538-4357</eissn><abstract>We have applied our asymmetric spherical adaptation of Coupled Escape Probability to the modeling of optically thick cometary comae. Expanding on our previously published work, here we present models including asymmetric comae. Near-nucleus observations from the Deep Impact mission have been modeled, including observed coma morphology features. We present results for two primary volatile species of interest, H2O and CO2, for comet 9P/Tempel 1. Production rates calculated using our best-fit models are notably greater than those derived from the Deep Impact data based on the assumption of optically thin conditions, both for H2O and CO2 but more so for CO2, and fall between the Deep Impact values and the global pre-impact production rates measured at other observatories and published by Schleicher et al. (2006), Mumma et al. 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subjects | Astrophysics Asymmetry Carbon dioxide Comet nuclei Comets comets: individual (9P/Tempel 1) Deep Impact Mission (NASA) methods: numerical Modelling Morphology Observatories techniques: spectroscopic |
title | Modeling the Deep Impact Near-nucleus Observations of H2O and CO2 in Comet 9P/Tempel 1 Using Asymmetric Spherical Coupled Escape Probability |
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