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Aims. We analyse unpublished Spitzer observations of the thermal phase-curve of WASP-121 b, a benchmark ultra-hot Jupiter. Methods. We adopted the wavelet pixel-independent component analysis technique to remove challenging instrumental…

Earth and Planetary Astrophysics · Physics 2023-08-16 Giuseppe Morello , Quentin Changeat , Achrène Dyrek , Pierre-Olivier Lagage , Jonathan C. Tan

We present a comparative study of the thermal emission of the transiting exoplanets WASP-1b and WASP-2b using the Spitzer Space Telescope. The two planets have very similar masses but suffer different levels of irradiation and are predicted…

We present broad-band photometry of eleven planetary transits of the hot Jupiter WASP-74b, using three medium-class telescopes and employing the telescope-defocussing technique. Most of the transits were monitored through I filters and one…

We measure the 4.5 $\mu$m thermal emission of five transiting hot Jupiters, WASP-13b, WASP-15b, WASP-16b, WASP-62b and HAT-P-22b using channel 2 of the Infrared Array Camera (IRAC) on the {\sl Spitzer Space Telescope}. Significant…

Earth and Planetary Astrophysics · Physics 2016-12-28 Brian M. Kilpatrick , Nikole K. Lewis , Tiffany Kataria , Drake Deming , James G. Ingalls , Jessica E. Krick , Gregory S. Tucker

We present a consistent optimal estimation retrieval analysis of ten hot Jupiter exoplanets, each with transmission spectral data spanning the visible to near-infrared wavelength range. Using the NEMESIS radiative transfer and retrieval…

Earth and Planetary Astrophysics · Physics 2017-01-04 Joanna K. Barstow , Suzanne Aigrain , Patrick G. J. Irwin , David K. Sing

We report 78 secondary eclipse depths for a sample of 36 transiting hot Jupiters observed at 3.6- and 4.5 microns using the Spitzer Space Telescope. Our eclipse results for 27 of these planets are new, and include highly irradiated worlds…

We revisit the atmospheric properties of the extremely hot Jupiter WASP-12b in light of several new developments. First, new narrowband (2.315 micron) secondary eclipse photometry that we present here, which exhibits a planet/star flux…

Earth and Planetary Astrophysics · Physics 2012-11-20 Ian J. M. Crossfield , Travis Barman , Brad M. S. Hansen , Ichi Tanaka , Tadayuki Kodama

We present Warm Spitzer/IRAC secondary eclipse time series photometry of three short-period transiting exoplanets, HAT-P-3b, HAT-P-4b and HAT-P-12b, in both the available 3.6 and 4.5 micron bands. HAT-P-3b and HAT-P-4b are Jupiter-mass,…

We present detections of the near-infrared thermal emission of three hot Jupiters and one brown-dwarf using the Wide-field Infrared Camera (WIRCam) on the Canada-France-Hawaii Telescope (CFHT). These include Ks-band secondary eclipse…

The WASP-98 planetary system represents a rare case of a hot Jupiter hosted by a metal-poor main-sequence star. We present a follow-up study of this system based on multi-band photometry and high-resolution spectroscopy. Two new transit…

Earth and Planetary Astrophysics · Physics 2016-09-09 L. Mancini , M. Giordano , P. Molliere , J. Southworth , R. Brahm , S. Ciceri , Th. Henning

We present thermal phase curve measurements for the hot Jupiter WASP-103b observed with Hubble/WFC3 and Spitzer/IRAC. The phase curves have large amplitudes and negligible hotspot offsets, indicative of poor heat redistribution to the…

We present here a reanalysis of the Spitzer Space Telescope phase curves of the hot Jupiter WASP43 b, using the wavelet pixel-Independent Component Analysis, a blind signal-source separation method. The data analyzed were recorded with the…

Earth and Planetary Astrophysics · Physics 2019-08-28 Giuseppe Morello , Camilla Danielski , Daniel Dicken , Pascal Tremblin , Pierre-Olivier Lagage

We report the tentative detection of the near-infrared emission of the Hot Jupiter WASP-12b with the low-resolution prism on IRTF/SpeX. We find a K-H contrast color of 0.137% +/- 0.054%, corresponding to a blackbody of temperature 2400…

Earth and Planetary Astrophysics · Physics 2012-04-12 Ian J. M. Crossfield , Brad M. S. Hansen , Travis Barman

We analyze all existing secondary eclipse time series spectroscopy of hot Jupiter HD189733b acquired with the now defunct Spitzer/IRS instrument. We describe the novel approaches we develop to remove the systematic effects and extract…

Earth and Planetary Astrophysics · Physics 2015-06-23 Kamen O. Todorov , Drake Deming , Adam S. Burrows , Carl J. Grillmair

Accurate and repeated photometric follow-up observations of planetary-transit events are important to precisely characterize the physical properties of exoplanets. A good knowledge of the main characteristics of the exoplanets is…

Earth and Planetary Astrophysics · Physics 2015-05-06 S. Ciceri , L. Mancini , J. Southworth , I. Bruni , N. Nikolov , G. D'Ago , T. Schroeder , V. Bozza , J. Tregloan-Reed , Th. Henning

With over 30 phase curves observed during the warm Spitzer mission, the complete data set provides a wealth of information relating to trends and three-dimensional properties of hot Jupiter atmospheres. In this work we present a comparative…

The hot Jupiter WASP-12b is one of the largest, hottest, and best-studied extrasolar planets. We revisit our recent analysis of WASP-12b's emission spectrum in light of near-infrared spectroscopic measurements which have been claimed to…

Earth and Planetary Astrophysics · Physics 2013-04-26 Ian J. M. Crossfield , Travis Barman , Brad M. S. Hansen , Ichi Tanaka , Tadayuki Kodama

Here we present a thermal emission spectrum of WASP-79b, obtained via Hubble Space Telescope Wide Field Camera 3 G141 observations as part of the PanCET program. As we did not observe the ingress or egress of WASP-79b's secondary eclipse,…

We present one of the most precise emission spectra of an exoplanet observed so far. We combine five secondary eclipses of the hot Jupiter WASP-18 b (Tday=2900K) that we secured between 1.1 and 1.7 micron with the WFC3 instrument aboard the…

Motivated by a high Spitzer IRAC oversubscription rate, we present a new technique of randomly and sparsely sampling phase curves of hot Jupiters. Snapshot phase curves are enabled by technical advances in precision pointing as well as…

Earth and Planetary Astrophysics · Physics 2016-06-15 J. E. Krick , J. Ingalls , S. Carey , K. von Braun , S. R. Kane , D. Ciardi , P. Plavchan , I. Wong , P. Lowrance
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