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Showing 1–10 of 10 results
Advanced filters: Author: Nikolay K. Nikolov Clear advanced filters

  • The transmission spectrum of the exoplanet WASP-39b is obtained using observations from the Single-Object Slitless Spectroscopy mode of the Near Infrared Imager and Slitless Spectrograph instrument aboard the JWST.

    • Adina D. Feinstein
    • Michael Radica
    • Xi Zhang
    ResearchOpen Access
    Nature
    Volume: 614, P: 670-675

  • The dayside thermal emission spectrum and brightness temperature map of the ultra-hot Jupiter WASP-18b obtained from the NIRISS instrument on the JWST showed water emission features, an atmosphere consistent with solar metallicity, as well as a steep and symmetrical decrease in temperature towards the nightside.

    • Louis-Philippe Coulombe
    • Björn Benneke
    • Peter J. Wheatley
    ResearchOpen Access
    Nature
    Volume: 620, P: 292-298

  • Phase-resolved mid-infrared observations from JWST of the hot gas giant WASP-43b detect a day–night difference of 659 ± 19 K. Comparison with climate models shows that the observations are compatible with cloudy skies, at least on the nightside, and the lack of methane detection suggests the presence of disequilibrium chemistry.

    • Taylor J. Bell
    • Nicolas Crouzet
    • Sebastian Zieba
    ResearchOpen Access
    Nature Astronomy
    Volume: 8, P: 879-898

  • 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

  • The medium-resolution transmission spectrum of the exoplanet WASP-39b, described using observations from the Near Infrared Spectrograph G395H grating aboard JWST, shows significant absorption from CO2 and H2O and detection of SO2.

    • Lili Alderson
    • Hannah R. Wakeford
    • Xi Zhang
    ResearchOpen Access
    Nature
    Volume: 614, P: 664-669

  • Analysis is presented that indicates that there is strong evidence that SiO or Mg, the major constituents of silicate condensates, must be present in gaseous form in the atmosphere of ultra-hot Jupiter WASP-178b.

    • Joshua D. Lothringer
    • David K. Sing
    • Autumn T. Winch
    Research
    Nature
    Volume: 604, P: 49-52

  • The goal of a development programme for a biosimilar product is to prove its biosimilarity to the reference product, rather than independently establish its safety and efficacy. In this Perspectives article, the authors describe the US FDA's rigorous approach to the assessment of biosimilarity for proposed biosimilar therapeutic proteins, including those intended to treat rheumatologic conditions.

    • Nikolay P. Nikolov
    • Marjorie A. Shapiro
    Comments & Opinion
    Nature Reviews Rheumatology
    Volume: 13, P: 123-128

  • 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

  • A spectroscopic comparison of ten hot-Jupiter exoplanets reveals that the difference between the planetary radius measured at optical and infrared wavelengths allows atmosphere types ranging from clear to cloudy to be distinguished; the difference in radius at a given wavelength correlates with the spectral strength of water at that wavelength, suggesting that haze obscures the signal from water.

    • David K. Sing
    • Jonathan J. Fortney
    • Paul A. Wilson
    Research
    Nature
    Volume: 529, P: 59-62

  • Observations of the gas-giant exoplanet WASP-121b reveal near-infrared emission lines of water, suggesting that the planet has a stratosphere—a layer in the upper atmosphere where temperature increases with altitude.

    • Thomas M. Evans
    • David K. Sing
    • Roxana Lupu
    Research
    Nature
    Volume: 548, P: 58-61