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We report the combined JWST NIRSpec/G395H and NIRISS/SOSS transmission spectrum of the transiting super-Jupiter HAT-P-14 b, from 0.60 $\mu m$ to 5.14 $\mu m$. Initial analysis of these data reported a near-featureless spectrum at NIRSpec…

Earth and Planetary Astrophysics · Physics 2025-04-15 Rongrong Liu , Le-Chris Wang , Zafar Rustamkulov , David K. Sing

The transit timing variation (TTV) and transmission spectroscopy analyses of the planet HAT-P-37b, which is a hot Jupiter orbiting an G-type star, were performed. Nine new transit light curves are obtained and analysed together with 21…

We present HST optical transmission spectra of the transiting hot Jupiter WASP-12b, taken with the STIS instrument. From the transmission spectra, we are able to decisively rule out prominent absorption by TiO in the exoplanet's atmosphere.…

There has been increasing progress toward detailed characterization of exoplanetary atmospheres, in both observations and theoretical methods. Improvements in observational facilities and data reduction and analysis techniques are enabling…

Earth and Planetary Astrophysics · Physics 2019-01-30 C. von Essen , M. Mallonn , L. Welbanks , N. Madhusudhan , A. Pinhas , H. Bouy , P. Weis Hansen

We report an attempt to detect molecular and atomic species in the atmosphere of the ultra-hot Jupiter WASP-33b using the high-resolution echelle spectrograph NEID with a wavelength coverage of 380$-$930 nm. By analyzing the transmission…

Earth and Planetary Astrophysics · Physics 2023-12-06 Yuanheng Yang , Guo Chen , Songhu Wang , Fei Yan

Broad-band exoplanet transit photometry can characterize the planetary atmosphere when observed at multiple selected filters. This observing technique can reveal gradients in the spectra of extrasolar planets, for example the slope of…

Earth and Planetary Astrophysics · Physics 2017-09-19 Matthias Mallonn , Hannah R. Wakeford

We present a new optical transmission spectrum of the hot Jupiter HAT-P-1b based on two transits observed with the Double Spectrograph (DBSP) on the Palomar 200-inch (P200) telescope. The DBSP transmission spectrum, covering a wavelength…

Earth and Planetary Astrophysics · Physics 2022-10-12 Guo Chen , Hongchi Wang , Roy van Boekel , Enric Palle

For solar-system objects, ultraviolet spectroscopy has been critical in identifying sources for stratospheric heating and measuring the abundances of a variety of hydrocarbon and sulfur-bearing species, produced via photochemical…

We report Hubble Space Telescope (HST) optical to near-infrared transmission spectroscopy of the hot Jupiter WASP-6b, measured with the Space Telescope Imaging Spectrograph (STIS) and Spitzer's InfraRed Array Camera (IRAC). The resulting…

Ultra-hot Jupiters with equilibrium temperature greater than 2000K are uniquely interesting targets as they provide us crucial insights into how atmospheres behave under extreme conditions. This class of giant planets receives intense…

We present the transmission spectrum of HAT-P-12b through a joint analysis of data obtained from the Hubble Space Telescope Space Telescope Imaging Spectrograph (STIS) and Wide Field Camera 3 (WFC3) and Spitzer, covering the wavelength…

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…

The hot sub-Saturn-mass exoplanet HAT-P-12b is an ideal target for transmission spectroscopy because of its inflated radius. We observed one transit of the planet with the multi-object double spectrograph (MODS) on the Large Binocular…

Earth and Planetary Astrophysics · Physics 2020-10-14 F. Yan , N. Espinoza , K. Molaverdikhani , Th. Henning , L. Mancini , M. Mallonn , B. V. Rackham , D. Apai , A. Jordán , P. Mollière , G. Chen , L. Carone , A. Reiners

We observed the Saturn-mass and Jupiter-sized exoplanet HAT-P-19b to refine its transit parameters and ephemeris as well as to shed first light on its transmission spectrum. We monitored the host star over one year to quantify its flux…

Earth and Planetary Astrophysics · Physics 2015-08-05 M. Mallonn , C . von Essen , J. Weingrill , K. G. Strassmeier , I. Ribas , T. A. Carroll , E. Herrero , T. Granzer , A. Claret , A. Schwope

We present an optical transmission spectrum of the atmosphere of WASP-4b obtained through observations of four transits with Magellan/IMACS. Using a Bayesian approach to atmospheric retrieval, we find no evidence for scattering or…

We present Hubble Space Telescope optical and near-ultraviolet transmission spectra of the transiting hot-Jupiter HD189733b, taken with the repaired Space Telescope Imaging Spectrograph (STIS) instrument. The resulting spectra cover the…

We present an atmospheric transmission spectrum of the ultra-hot Jupiter WASP-76 b by analyzing archival data obtained with the Space Telescope Imaging Spectrograph (STIS) on board the Hubble Space Telescope (HST). The dataset spans three…

Earth and Planetary Astrophysics · Physics 2020-05-20 C. von Essen , M. Mallonn , S. Hermansen , M. C. Nixon , N. Madhusudhan , H. Kjeldsen , G. Tautvaišienė

We present a comprehensive analysis of the 0.3--5\,$\mu$m transit spectrum for the inflated hot Jupiter HAT-P-41b. The planet was observed in transit with Hubble STIS and WFC3 as part of the Hubble Panchromatic Comparative Exoplanet…

We report here the analysis of the near-infrared transit spectrum of the hot-Jupiter HAT-P-32b which was recorded with the Wide Field Camera 3 (WFC3) on-board the Hubble Space Telescope (HST). HAT-P-32b is one of the most inflated…

Earth and Planetary Astrophysics · Physics 2018-02-28 M. Damiano , G. Morello , A. Tsiaras , T. Zingales , G. Tinetti

Understanding the role of optical absorbers is critical for linking the properties of the day-side and terminator atmospheres of hot Jupiters. This study aims to identify the signatures of optical absorbers in the atmosphere of the hot…

Earth and Planetary Astrophysics · Physics 2023-11-27 C. Jiang , G. Chen , F. Murgas , E. Pallé , H. Parviainen , Y. Ma