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Upper Limits for Emissions in the Coma of Comet 67P/Churyumov–Gerasimenko near Perihelion as Measured by Rosetta’s Alice Far-UV Spectrograph

  • Authors: Brian A. Keeney, S. Alan Stern, Ronald J. Vervack, Matthew M. Knight, John Noonan, Joel Wm. Parker, Michael F. A'Hearn, Jean-Loup Bertaux, Lori M. Feaga, Paul D. Feldman, Richard A. Medina, Jon P. Pineau, Rebecca N. Schindhelm, Andrew J. Steffl, M. Versteeg, and Harold A. Weaver

2019 The Astronomical Journal 158 252.

  • Provider: AAS Journals

Caption: Figure 2.

Example Alice spectral image acquired at 11:22:51 UT on 2015 July 1, when 67P/C-G was 1.35 au from the Sun, Rosetta was 160 km from the comet center, and the solar phase angle was 89.°6. The nucleus (orange shaded region) and extracted coma rows (blue shaded region) are labeled, along with the positions of several atomic emission lines and the instrumental feature (red shaded region) affecting wavelengths ≲1000 Å (Noonan et al. 2016).

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