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Showing 1–7 of 7 results
Advanced filters: Author: J. Lustig-Yaeger Clear advanced filters

  • Simultaneous observations of TRAPPIST-1 b from JWST at 12.8 and 15 μm indicate that it is probably a bare rock with a mineral-rich surface. However, an alternative scenario with a CO2-rich atmosphere and hazes could also explain the observations.

    • Elsa Ducrot
    • Pierre-Olivier Lagage
    • Gillian Wright
    Research
    Nature Astronomy
    Volume: 9, P: 358-369

  • The warm Earth-sized planet LHS 475 b is validated and characterized with two transits observed by the JWST. The absence of evident spectroscopic features excludes a substantial hydrogen envelope and indicates that LHS 475 b has either little or no atmosphere or an optically thick cloud deck at high altitudes.

    • Jacob Lustig-Yaeger
    • Guangwei Fu
    • Hannah R. Wakeford
    Research
    Nature Astronomy
    Volume: 7, P: 1317-1328

  • Time-series observations from the JWST of the transiting exoplanet WASP-39b show gaseous water in the planet’s atmosphere and place an upper limit on the abundance of methane.

    • Eva-Maria Ahrer
    • Kevin B. Stevenson
    • Xi Zhang
    ResearchOpen Access
    Nature
    Volume: 614, P: 653-658

  • A broad-wavelength 0.5–5.5 µm atmospheric transmission spectrum of WASP-39b, a 1,200 K, roughly Saturn-mass, Jupiter-radius exoplanet, demonstrates JWST’s sensitivity to a rich diversity of exoplanet compositions and chemical processes.

    • Z. Rustamkulov
    • D. K. Sing
    • S. Zieba
    ResearchOpen Access
    Nature
    Volume: 614, P: 659-663

  • A combined analysis of datasets across four JWST instrument modes provides a benchmark transmission spectrum for the Saturn-mass WASP-39 b. The broad wavelength range and high resolution constrain orbital and stellar parameters to below 1%.

    • A. L. Carter
    • E. M. May
    • X. Zhang
    ResearchOpen Access
    Nature Astronomy
    Volume: 8, P: 1008-1019

  • Transmission spectroscopy observations from the James Webb Space Telescope show the detection of carbon dioxide in the atmosphere of the gas giant exoplanet WASP-39b.

    • Eva-Maria Ahrer
    • Lili Alderson
    • Sebastian Zieba
    ResearchOpen Access
    Nature
    Volume: 614, P: 649-652

  • The JWST has the potential to increase our understanding of terrestrial exoplanets and their atmospheres, but the various signal contaminations need to be isolated and quantified. Using JWST Cycle 1 observations of TRAPPIST-1 as a benchmark, this Perspective proposes a series of steps to use future JWST data efficiently for this purpose.

    • Julien de Wit
    • René Doyon
    • Michael J. Way
    Reviews
    Nature Astronomy
    Volume: 8, P: 810-818