Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec
We report the combined JWST Near Infrared Spectrograph (NIRSpec)/G395H and the Near Infrared Imager and Slitless Spectrograph (NIRISS)/Single Object Slitless Spectroscopy (SOSS) transmission spectrum of the transiting super-Jupiter HAT-P-14 b, from 0.60 to 5.14 μ m. Initial analysis of these data re...
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IOP Publishing
2025-01-01
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| Online Access: | https://doi.org/10.3847/1538-3881/adcba7 |
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| author | Rongrong Liu Le-Chris Wang Zafar Rustamkulov David K. Sing |
| author_facet | Rongrong Liu Le-Chris Wang Zafar Rustamkulov David K. Sing |
| author_sort | Rongrong Liu |
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| description | We report the combined JWST Near Infrared Spectrograph (NIRSpec)/G395H and the Near Infrared Imager and Slitless Spectrograph (NIRISS)/Single Object Slitless Spectroscopy (SOSS) transmission spectrum of the transiting super-Jupiter HAT-P-14 b, from 0.60 to 5.14 μ m. Initial analysis of these data reported a near-featureless spectrum at NIRSpec wavelengths range (2.87–5.14 μ m) consistent with the small atmospheric scale height of the planet and unexplained bumps and wiggles at NIRISS wavelengths range (0.6–2.8 μ m). Here, we produce a self-consistent spectrum of HAT-P-14 b’s atmosphere with an up-to-date reduction. We detect H _2 O (3.09 σ ) both across NIRISS/SOSS wavelengths range and at the bluest end of NIRSpec/G395H as well as a gray cloud deck (1.90 σ ). We constrain the atmospheric metallicity of HAT-P-14 b to be roughly Solar, with [Fe/H] $=-0.0{8}_{-0.98}^{+0.89}$ , consistent with the planet mass–metallicity relationship. The differences compared to previous works are likely due to the improved STScI jwst pipeline, which highlights the need to reanalyze the early NIRISS/SOSS transiting exoplanet targets with the latest methods. As HAT-P-14 b is placed as the 805th best target for transmission spectroscopy according to Transmission Spectroscopy Metrics, our results showcase JWST’s unparalleled photometric precision which can easily characterize a thousand exoplanets’ atmospheres through transmission spectroscopy. |
| format | Article |
| id | doaj-art-7747e59996ea41cb8da99f4ab8c1a32a |
| institution | OA Journals |
| issn | 1538-3881 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astronomical Journal |
| spelling | doaj-art-7747e59996ea41cb8da99f4ab8c1a32a2025-08-20T02:25:51ZengIOP PublishingThe Astronomical Journal1538-38812025-01-01169633510.3847/1538-3881/adcba7Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpecRongrong Liu0https://orcid.org/0000-0003-0685-3525Le-Chris Wang1https://orcid.org/0000-0002-6379-3816Zafar Rustamkulov2https://orcid.org/0000-0003-4408-0463David K. Sing3https://orcid.org/0000-0001-6050-7645Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA ; rongrong.liu@cfa.harvard.edu; William H. Miller III Department of Physics & Astronomy, Johns Hopkins University , 3400 N Charles Street, Baltimore, MD 21218, USA ; lwang178@jhu.eduWilliam H. Miller III Department of Physics & Astronomy, Johns Hopkins University , 3400 N Charles Street, Baltimore, MD 21218, USA ; lwang178@jhu.eduDepartment of Earth and Planetary Science, Johns Hopkins University , 3400 N. Charles Street, Baltimore, MD 21218, USAWilliam H. Miller III Department of Physics & Astronomy, Johns Hopkins University , 3400 N Charles Street, Baltimore, MD 21218, USA ; lwang178@jhu.edu; Department of Earth and Planetary Science, Johns Hopkins University , 3400 N. Charles Street, Baltimore, MD 21218, USAWe report the combined JWST Near Infrared Spectrograph (NIRSpec)/G395H and the Near Infrared Imager and Slitless Spectrograph (NIRISS)/Single Object Slitless Spectroscopy (SOSS) transmission spectrum of the transiting super-Jupiter HAT-P-14 b, from 0.60 to 5.14 μ m. Initial analysis of these data reported a near-featureless spectrum at NIRSpec wavelengths range (2.87–5.14 μ m) consistent with the small atmospheric scale height of the planet and unexplained bumps and wiggles at NIRISS wavelengths range (0.6–2.8 μ m). Here, we produce a self-consistent spectrum of HAT-P-14 b’s atmosphere with an up-to-date reduction. We detect H _2 O (3.09 σ ) both across NIRISS/SOSS wavelengths range and at the bluest end of NIRSpec/G395H as well as a gray cloud deck (1.90 σ ). We constrain the atmospheric metallicity of HAT-P-14 b to be roughly Solar, with [Fe/H] $=-0.0{8}_{-0.98}^{+0.89}$ , consistent with the planet mass–metallicity relationship. The differences compared to previous works are likely due to the improved STScI jwst pipeline, which highlights the need to reanalyze the early NIRISS/SOSS transiting exoplanet targets with the latest methods. As HAT-P-14 b is placed as the 805th best target for transmission spectroscopy according to Transmission Spectroscopy Metrics, our results showcase JWST’s unparalleled photometric precision which can easily characterize a thousand exoplanets’ atmospheres through transmission spectroscopy.https://doi.org/10.3847/1538-3881/adcba7Exoplanet astronomyExoplanet atmospheresExoplanetsBayesian statisticsExoplanet atmospheric compositionTransmission spectroscopy |
| spellingShingle | Rongrong Liu Le-Chris Wang Zafar Rustamkulov David K. Sing Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec The Astronomical Journal Exoplanet astronomy Exoplanet atmospheres Exoplanets Bayesian statistics Exoplanet atmospheric composition Transmission spectroscopy |
| title | Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec |
| title_full | Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec |
| title_fullStr | Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec |
| title_full_unstemmed | Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec |
| title_short | Unveiling the Atmosphere of the Super-Jupiter HAT-P-14 b with JWST NIRISS and NIRSpec |
| title_sort | unveiling the atmosphere of the super jupiter hat p 14 b with jwst niriss and nirspec |
| topic | Exoplanet astronomy Exoplanet atmospheres Exoplanets Bayesian statistics Exoplanet atmospheric composition Transmission spectroscopy |
| url | https://doi.org/10.3847/1538-3881/adcba7 |
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