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arXiv:0711.4974 (astro-ph)
[Submitted on 30 Nov 2007]

Title:Polarimetry of the dwarf planet (136199) Eris

Authors:I. Belskaya, S. Bagnulo, K. Muinonen, M.A. Barucci, G.P. Tozzi, S. Fornasier, L. Kolokolova
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Abstract: We investigate the surface characteristics of the large dwarf planet (136199) Eris. With the FORS1 instrument of the ESO VLT, we have obtained Bessell broadband R linear polarimetry and broadband V and I photometry. We have modelled the observations in terms of the coherent-backscattering mechanism to constrain the surface properties of the object. Polarimetric observations of Eris show a small negative linear polarization without opposition surge in the phase angle range of 0.15-0.5 degrees. The photometric data allow us to suppose a brightness opposition peak at phase angles below 0.2-0.3 degrees. The data obtained suggest possible similarity to the polarimetric and photometric phase curves of Pluto. The measured absolute magnitude and broadband colors of Eris are H_V=-1.15, V-R=0.41, and V-I=0.75.
Comments: Accepted by A&A
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0711.4974 [astro-ph]
  (or arXiv:0711.4974v1 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0711.4974
Related DOI: https://doi.org/10.1051/0004-6361%3A20078241

Submission history

From: Stefano Bagnulo [view email]
[v1] Fri, 30 Nov 2007 16:50:04 UTC (22 KB)
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