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Water vapour absorption in the clear atmosphere of a Neptune-sized exoplanet

Author

Listed:
  • Jonathan Fraine

    (University of Maryland, College Park
    Instituto de Astrofísica, Pontificia Universidad Católica de Chile, 7820436 Macul, Santiago, Chile
    California Institute of Technology)

  • Drake Deming

    (University of Maryland, College Park
    NASA Astrobiology Institute’s Virtual Planetary Laboratory)

  • Bjorn Benneke

    (California Institute of Technology)

  • Heather Knutson

    (California Institute of Technology)

  • Andrés Jordán

    (Instituto de Astrofísica, Pontificia Universidad Católica de Chile, 7820436 Macul, Santiago, Chile)

  • Néstor Espinoza

    (Instituto de Astrofísica, Pontificia Universidad Católica de Chile, 7820436 Macul, Santiago, Chile)

  • Nikku Madhusudhan

    (Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK)

  • Ashlee Wilkins

    (University of Maryland, College Park)

  • Kamen Todorov

    (ETH Zürich, 8049 Zürich, Switzerland)

Abstract

Space telescope observations of the transmission spectrum of the extrasolar planet HAT-P-11b, which is about the same size as Neptune, reveal water vapour absorption at a wavelength of 1.4 micrometres and indicate that the planetary atmosphere is predominantly clear down to an altitude corresponding to about 1 millibar.

Suggested Citation

  • Jonathan Fraine & Drake Deming & Bjorn Benneke & Heather Knutson & Andrés Jordán & Néstor Espinoza & Nikku Madhusudhan & Ashlee Wilkins & Kamen Todorov, 2014. "Water vapour absorption in the clear atmosphere of a Neptune-sized exoplanet," Nature, Nature, vol. 513(7519), pages 526-529, September.
    • Handle: RePEc:nat:nature:v:513:y:2014:i:7519:d:10.1038_nature13785
    DOI: 10.1038/nature13785
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