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Surprisingly Enriched CO and CH4 in Halley-type Comet 13P/Olbers: Clues to Its Interstellar Heritage

  • Authors: Michael A. DiSanti, Mohammad Saki, Erika L. Gibb, Boncho P. Bonev, Neil Dello Russo, Ronald J. Vervack, Karen Willacy, Younas Khan, Sara Faggi, Nathan X. Roth, Geronimo L. Villanueva, Hideyo Kawakita

Michael A. DiSanti et al 2026 The Planetary Science Journal 7 .

  • Provider: AAS Journals

Caption: Figure 6.

Abundance ratios and ±1σ uncertainties for six trace species relative to H2O in 13P, together with minimum, maximum, and mean values measured among comets (excluding 13P), again showing its enriched abundances of CO and CH4 as are illustrated spectrally in Figures 2(a)–(b) and in Figures 3 and 4, respectively, yet near-mean abundances of C2H6 and CH3OH. For identities of the comets (abbreviated here) having measured minimum and maximum values, see Table 3, note b.

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