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Low Water Outgassing from (24) Themis and (65) Cybele: 3.1 μm Near-IR Spectral Implications

  • Authors: L. O'Rourke, T.G. Müller, N. Biver, D. Bockelée-Morvan, S. Hasegawa, I. Valtchanov, M. Küppers, S. Fornasier, H. Campins, H. Fujiwara, D. Teyssier, and T. Lim

2020 The Astrophysical Journal Letters 898 L45.

  • Provider: AAS Journals

Caption: Figure 1.

Averaged HIFI spectra and thermophysical modeling output. Shown are the HRS-averaged spectra for (a) asteroid Themis and (b) asteroid Cybele with TPM outputs (c) for Themis (left) and Cybele (right). These outputs represent the Herschel view with orientation “ecliptic sky” at the specific HIFI observing start epochs. The plots in panel (d) show the observations divided by the TPM predictions using the best solution described in the text as a function of wavelength for Themis (left) and Cybele (right). For Themis, the data shown are the good photometric data points coming from Spitzer-IRS (squares), Subaru (crosses), Akari below 5 and above 18 μm (triangles), and WISE-W4 at 22 μm (diamonds). For Cybele, the data are IRAS (squares); AKARI (triangles); ISOCAM (crosses); and PACS, SPIRE, and Spitzer-IRS (diamonds), with identification linked to wavelength.

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