Extrasolar planets: Cloudy with a chance of dustballs

@article{Moses2014ExtrasolarPC,
  title={Extrasolar planets: Cloudy with a chance of dustballs},
  author={Julianne I. Moses},
  journal={Nature},
  year={2014},
  volume={505},
  pages={31-32}
}
  • J. Moses
  • Published 2014
  • Physics, Medicine
  • Nature
The flat and featureless transmission spectra of two intermediate-sized extrasolar planets, observed during the planets' passage across their host stars, shed light on the properties of their atmospheres. See Letters p.66 & p.69 Two papers in this issue of Nature report Hubble Space Telescope observations of two separate sub-Jupiter-sized extrasolar planets. Heather Knutson et al. observed four transits of the Neptune-mass planet GJ 436b and Laura Kreidberg et al. observed 15 transits of the… Expand

Figures and Topics from this paper

Diagnosing clouds and hazes in exoplanet atmospheres
Title of dissertation: DIAGNOSING CLOUDS AND HAZES IN EXOPLANET ATMOSPHERES Jonathan David Fraine, Doctor of Philosophy, 2015 Dissertation directed by: Professor L. Drake Deming Department ofExpand
Exoplanet Classification and Yield Estimates for Direct Imaging Missions
Future NASA concept missions that are currently under study, like Habitable Exoplanet Imaging Mission (HabEx) & Large Ultra-Violet Optical Infra Red (LUVOIR) Surveyor, would discover a largeExpand
Global energy budgets and "Trenberth diagrams" for the climates of terrestrial and gas giant planets
© 2015 The Authors. The climate on Earth is generally determined by the amount and distribution of incoming solar radiation, which must be balanced in equilibrium by the emission of thermal radiationExpand

References

SHOWING 1-8 OF 8 REFERENCES
Clouds in the atmosphere of the super-Earth exoplanet GJ 1214b
TLDR
A measurement of the transmission spectrum of GJ 1214b at near-infrared wavelengths is reported, sufficiently precise to detect absorption features from a high mean-molecular-mass atmosphere and rule out cloud-free atmospheric models with compositions dominated by water, methane, carbon monoxide, nitrogen or carbon dioxide. Expand
One or more bound planets per Milky Way star from microlensing observations
TLDR
It is concluded that stars are orbited by planets as a rule, rather than the exception, and that of stars host Jupiter-mass planets 0.5–10 au (Sun–Earth distance) from their stars. Expand
A ground-based transmission spectrum of the super-Earth exoplanet GJ 1214b
TLDR
A ground-based measurement of the transmission spectrum of GJ 1214b between wavelengths of 780 and 1,000 nm is reported, finding the lack of features in this spectrum rules out cloud-free atmospheres composed primarily of hydrogen. Expand
THE FLAT TRANSMISSION SPECTRUM OF THE SUPER-EARTH GJ1214b FROM WIDE FIELD CAMERA 3 ON THE HUBBLE SPACE TELESCOPE
Capitalizing on the observational advantage oered by its tiny M dwarf host, we present HST/WFC3 grism measurements of the transmission spectrum of the super-Earth exoplanet GJ1214b. These are the rstExpand
Possible thermochemical disequilibrium in the atmosphere of the exoplanet GJ 436b
TLDR
The detection of planetary thermal emission from the dayside of GJ 436b at multiple infrared wavelengths during the secondary eclipse is reported, finding a high CO abundance and a substantial methane (CH4) deficiency relative to thermochemical equilibrium models for the predicted hydrogen-dominated atmosphere. Expand
A featureless transmission spectrum for the Neptune-mass exoplanet GJ 436b
TLDR
Observations of GJ 436b’s atmosphere obtained during transit indicate that the planet's transmission spectrum is featureless, ruling out cloud-free, hydrogen-dominated atmosphere models with an extremely high significance of 48σ. Expand
QUANTITATIVELY ASSESSING THE ROLE OF CLOUDS IN THE TRANSMISSION SPECTRUM OF GJ 1214b
Recent observations of the super-Earth GJ?1214b show that it has a relatively featureless transmission spectrum. One suggestion is that these observations indicate that the planet's atmosphere isExpand
PLANETARY CANDIDATES OBSERVED BY KEPLER. III. ANALYSIS OF THE FIRST 16 MONTHS OF DATA
New transiting planet candidates are identified in 16 months (2009 May-2010 September) of data from the Kepler spacecraft. Nearly 5000 periodic transit-like signals are vetted against astrophysicalExpand