Search for extrasolar moons and rings using transit observations - Paul ...
Δημοσιεύτηκε στις 10 Μαρ 2017
Given
the detection of several thousand extrasolar planets, a very
interesting question is whether or not they have moons or rings. In the
cases of extrasolar Jupiter analogs, the gas giant may not support life,
but a moon could be suitable. Exomoons or rings have not yet been
detected with Kepler data, but the directly imaged Fomalhaut b is
thought to be optically bright because of stellar light scattering off a
circumplanetary dust ring (Kalas et al. 2008) and the distant (650 AU
separation) 11 Jupiter mass planet HD 106906b has been possibly resolved
in the optical using HST (Kalas et al. 2015). Also, the complex light
curve of J1407 has been modeled as a circumplanetary ring system with
radius 0.6 AU (Kenworthy & Mamajek 2015), and the 11 Jupiter mass
planet FW Tau b displays accretion signatures (Bowler et al. 2014) as
well as ALMA continuum emission from a circumplanetary disk (Kraus et
al. 2014). In this talk I will review these results, and then describe
international efforts to detect the possible moons and rings surrounding
the massive planet Beta Pic b as its circumplanetary environment
transits the star over a six-month period in 2017.
the detection of several thousand extrasolar planets, a very
interesting question is whether or not they have moons or rings. In the
cases of extrasolar Jupiter analogs, the gas giant may not support life,
but a moon could be suitable. Exomoons or rings have not yet been
detected with Kepler data, but the directly imaged Fomalhaut b is
thought to be optically bright because of stellar light scattering off a
circumplanetary dust ring (Kalas et al. 2008) and the distant (650 AU
separation) 11 Jupiter mass planet HD 106906b has been possibly resolved
in the optical using HST (Kalas et al. 2015). Also, the complex light
curve of J1407 has been modeled as a circumplanetary ring system with
radius 0.6 AU (Kenworthy & Mamajek 2015), and the 11 Jupiter mass
planet FW Tau b displays accretion signatures (Bowler et al. 2014) as
well as ALMA continuum emission from a circumplanetary disk (Kraus et
al. 2014). In this talk I will review these results, and then describe
international efforts to detect the possible moons and rings surrounding
the massive planet Beta Pic b as its circumplanetary environment
transits the star over a six-month period in 2017.
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