Polarization of hot Jupiter systems: a likely detection of stellar activity and a possible detection of planetary polarization
Jeremy Bailey,
Kimberly Bott,
Daniel V. Cotton
et al.
Abstract:We present high-precision linear polarization observations of four bright hot Jupiter systems (π Boo, HD 179949, HD 189733 and 51 Peg) and use the data to search for polarized reflected light from the planets. The data for 51 Peg are consistent with a reflected light polarization signal at about the level expected with 2.8π significance and a false alarm probability of 1.9 per cent. More data will be needed to confirm a detection of reflected light in this system. HD 189733 shows highly variable polarizatio… Show more
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