2022
DOI: 10.48550/arxiv.2204.13211
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The Volatile Carbon to Oxygen Ratio as a Tracer for the Formation Locations of Interstellar Comets

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“…It may be possible to distinguish between planetesimal and comet accretion based on the typical compositions of these objects. Their compositions are a function of formation location relative to various volatile condensation fronts (Öberg et al 2011;Seligman et al 2022). As an example, the atmospheric alkali metal content of hot Jupiters may indicate planetesimal accretion exterior to the H 2 O snow line and subsequent inward migration (Hands & Helled 2022).…”
Section: Cometary Enrichment Of Exoplanetsmentioning
confidence: 99%
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“…It may be possible to distinguish between planetesimal and comet accretion based on the typical compositions of these objects. Their compositions are a function of formation location relative to various volatile condensation fronts (Öberg et al 2011;Seligman et al 2022). As an example, the atmospheric alkali metal content of hot Jupiters may indicate planetesimal accretion exterior to the H 2 O snow line and subsequent inward migration (Hands & Helled 2022).…”
Section: Cometary Enrichment Of Exoplanetsmentioning
confidence: 99%
“…As an example, the atmospheric alkali metal content of hot Jupiters may indicate planetesimal accretion exterior to the H 2 O snow line and subsequent inward migration (Hands & Helled 2022). The population-level compositions of interstellar comets are unconstrained, although 2I/Borisov exhibited a volatile C/O ratio indicative of formation exterior to the CO snow line (Bodewits et al 2020;Cordiner et al 2020;Seligman et al 2022). If most interstellar comets form at large radial distances, interstellar cometary analogs, and planetesimals may deliver volatile material with varying condensation temperatures.…”
Section: Cometary Enrichment Of Exoplanetsmentioning
confidence: 99%
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