The Apparently Decaying Orbit of WASP-12b
نویسندگان
چکیده
منابع مشابه
Probing the extreme planetary atmosphere of WASP-12b
We report near-infrared measurements of the terminator region transmission spectrum and dayside emission spectrum of the exoplanet WASP-12b obtained using the HST WFC3 instrument. The disk-average dayside brightness temperature averages about 2900 K, peaking to 3200 K around 1.46 μm. Both the dayside and terminator region spectra can be explained in terms of opacity due to the metal hydrides Cr...
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We present z′-band secondary eclipse photometry of the highly irradiated hot Jupiter WASP12b using ULTRACAM on the 4.2 m William Herschel Telescope. We measure a decrease in flux of δ = 0.130 ± 0.013 per cent during the passage of the planet behind the star, which is significantly deeper than the previous measurement at this wavelength (0.082± 0.015 per cent). Our secondary eclipse is best fitt...
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Detailed characterization of exoplanets has begun to yield measurements of their atmospheric properties that constrain the planets’ origins and evolution. For example, past observations of the dayside emission spectrum of the hot Jupiter WASP-12b indicated that its atmosphere has a high carbon-to-oxygen ratio (C/O> 1), suggesting it had a different formation pathway than is commonly assumed for...
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We present Hubble Space Telescope (HST) optical transmission spectra of the transiting hot Jupiter WASP-12b, taken with the Space Telescope Imaging Spectrograph (STIS) instrument. The resulting spectra cover the range 2900 to 10300 Å which we combined with archival WFC3 spectra and Spitzer photometry to cover the full optical to infrared wavelength regions. With high spatial resolution, we are ...
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We present observations of the Rossiter-McLaughlin effect for the transiting exoplanet systems WASP-1, WASP-24, WASP-38 and HAT-P-8, and deduce the orientations of the planetary orbits with respect to the host stars’ rotation axes. The planets WASP-24b, WASP-38b and HAT-P-8b appear to move in prograde orbits and be well aligned, having sky-projected spin orbit angles consistent with zero: λ = −...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2017
ISSN: 1538-3881
DOI: 10.3847/1538-3881/aa6d75