Variability in the atmosphere of the hot giant planet HAT-P-7 b

The detection of temporal variations in the peak of the phase curve of the hot giant exoplanet HAT-P-7 b is explained by changes in wind speed and cloud coverage in its atmosphere. Such ‘weather’ has never before been observed on a giant exoplanet.

• Publication year

  2016

• Venue

  Nature Astronomy

• Publication date

  2016-12-12

• Fields of study

  Physics, Environmental Science

• Identifiers
  DOI 10.1038/s41550-016-0004arXiv 1612.04225
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• Weather-like variability has not previously been observed on a giant exoplanet.

  Confidence 0.89

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• Temporal variations in the peak of HAT-P-7 b's phase curve are explained by changes in atmospheric wind speed and cloud coverage.

  Confidence 0.97

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review

• cloud coverage

  atmospheric property

  The fraction of the planet's atmosphere covered by clouds, considered as a driver of the observed variability.

  Aliases: cloud cover

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• giant exoplanet

  exoplanet class

  A large gas giant planet outside the Solar System, the class of world referenced by the paper's conclusion.

  Aliases: hot giant exoplanet

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• hat-p-7 b

  exoplanet

  A hot giant exoplanet whose atmospheric variability is examined in the paper.

  Aliases: HAT-P-7b

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• phase curve

  measurement

  The planet's brightness variation over orbital phase as seen in reflected or emitted light.

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• phase curve peak

  measurement

  The maximum point of the phase curve used here to track changes in the planet's observed signal.

  Aliases: peak of the phase curve

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• weather

  phenomenon

  Time-varying atmospheric conditions in the planet's atmosphere.

  Aliases: atmospheric weather

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review
• wind speed

  atmospheric property

  The speed of atmospheric motion in HAT-P-7 b's atmosphere considered as a driver of the observed variability.

  Aliases: atmospheric wind speed

  박진우 (dztg5apj7m) extractionAK (4715169a40) reviewKiller Whale (322360f1c1) review뀨 (7c402c1b98) review

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