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Discovery of two distinct polarimetric behaviours of trans-Neptunian objects
S. Bagnulo, I. Belskaya, K. Muinonen +4
Trans-Neptunian objects (TNOs) contain the most primitive and thermally least-processed materials from the early accretional phase of the solar system. They allow us to study inter…
Photometry and polarimetry of the nucleus of comet 2P/Encke
H. Boehnhardt, G. P. Tozzi, S. Bagnulo +3
Broadband imaging photometry, and broadband and narrowband linear polarimetry was measured for the nucleus of 2P/Encke over the phase-angle range 4 - 28 deg. An analysis of the poi…
Evidence of Fragmenting Dust Particles from Near-Simultaneous Optical and Near-IR Photometry and Polarimetry of Comet 73P/Schwassmann-Wachmann 3
Terry Jay Jones, David Stark, Charles E. Woodward +4
We report imaging polarimetry of segments B and C of the Jupiter-family Comet 73P/Schwassmann-Wachmann 3 in the I and H bandpasses at solar phase angles of approximately 35 and 85d…
Polarimetry of the dwarf planet (136199) Eris
I. Belskaya, S. Bagnulo, K. Muinonen +4
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 polarimetr…
Dust observations of Comet 9P/Tempel 1 at the time of the Deep Impact
G. P. Tozzi, H. Boehnhardt, L. Kolokolova +15
On 4 July 2005 at 05:52 UT, the impactor of NASA's Deep Impact (DI) mission crashed into comet 9P/Tempel 1 with a velocity of about 10 km/s. The material ejected by the impact expa…
Spectropolarimetry of the Deep Impact target comet 9P/Tempel 1 with HiVIS
D. M. Harrington, K. Meech, L. Kolokolova +2
Spectropolarimetry of the Deep Impact target, comet 9P/ Tempel 1, was performed during the impact event on July 4th, 2005 with the HiVIS Spectropolarimeter and the AEOS 3.67m teles…
Circular polarization in comets: Observations of Comet C/1999 S4 (LINEAR) and tentative interpretation
Vera Rosenbush, Ludmilla Kolokolova, Alexander Lazarian +2
Comet C/1999 S4 (LINEAR) was exceptional in many respects. Its nucleus underwent multiple fragmentations culminating in the complete disruption around July 20, 2000. We present cir…
Two different evolutionary types of comets proved by polarimetric and infrared properties of their dust
L. Kolokolova, H. Kimura, N. Kiselev +1
Comets can be divided into two groups: type I, characterized by high gas/dust ratio, low polarization, and a weak or absent 10 micron silicate feature, and type II, for which a low…
Spectropolarimetry of the Deep Impact target comet 9P/Tempel 1 with HiVIS
D. M. Harrington, K. Meech, L. Kolokolova +2
High resolution spectropolarimetry of the Deep Impact target, comet 9P/ Tempel 1, was performed during the impact event on July 4th, 2005 with the HiVIS Spectropolarimeter and the…
Exploring the surface properties of Transneptunian Objects and Centaurs with polarimetric FORS1/VLT observations
S. Bagnulo, H. Boehnhardt, K. Muinonen +3
Polarization is a powerful remote-sensing method to investigate solar system bodies. It is an especially sensitive diagnostic tool to reveal physical properties of the bodies whose…