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Exoplanet Atmospheres

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arxiv 1005.4037 v1 pith:YNIKYF3B submitted 2010-05-21 astro-ph.EP

classification astro-ph.EP
keywords exoplanetatmospheresdetectionatmosphericdirectimagingorbitingstars
verification ladder T0 review T1 audit T2 compute T3 formal
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At the dawn of the first discovery of exoplanets orbiting sun-like stars in the mid-1990s, few believed that observations of exoplanet atmospheres would ever be possible. After the 2002 Hubble Space Telescope detection of a transiting exoplanet atmosphere, many skeptics discounted it as a one-object, one-method success. Nevertheless, the field is now firmly established, with over two dozen exoplanet atmospheres observed today. Hot Jupiters are the type of exoplanet currently most amenable to study. Highlights include: detection of molecular spectral features; observation of day-night temperature gradients; and constraints on vertical atmospheric structure. Atmospheres of giant planets far from their host stars are also being studied with direct imaging. The ultimate exoplanet goal is to answer the enigmatic and ancient question, "Are we alone?" via detection of atmospheric biosignatures. Two exciting prospects are the immediate focus on transiting super Earths orbiting in the habitable zone of M-dwarfs, and ultimately the spaceborne direct imaging of true Earth analogs.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The 35-Myr old infant planet TOI-837 b has a mildly misaligned orbit

    astro-ph.EP 2026-06 unverdicted novelty 8.0 of 10

    TOI-837 b has a true obliquity of 25.9+7.5-6.3 deg, the first planet younger than 100 Myr with accessible ψ incompatible with an aligned orbit, favoring primordial disc torque followed by disc-driven migration.

  2. The Mid-Infrared Transmission Spectrum of the Temperate Sub-Neptune TOI-270 d

    astro-ph.EP 2026-07 unverdicted novelty 7.0 of 10

    First mid-IR transmission spectrum of TOI-270 d shows molecular features with Bayesian evidence ln B = 2.8-5.3 and identifies candidate trace molecules from an agnostic search of 203 species.

  3. The GAPS programme at TNG: LXXVI. TOI-1533: a compact system hosting a super-Neptune-mass pair with disparate radii

    astro-ph.EP 2026-06 unverdicted novelty 6.0 of 10

    TOI-1533 is confirmed as a rare compact system hosting an inner sub-Neptune and an outer hot super-Neptune-mass giant with nearly equal masses and very different radii.

  4. Observability of radio reflections from exoplanet ionospheres with next generation radio telescopes

    astro-ph.EP 2025-07 conditional novelty 5.0 of 10

    A model of specular stellar radio reflection from the ionosphere of the hot Jupiter HD189733b predicts a reflected flux of 0.01 to 0.05 percent of the stellar flux at 50 MHz, detectable only for exceptionally bright r...

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