Phase-resolved high-resolution spectroscopy of CoRoT-2b measures sub-synchronous rotation at 2.6-sigma significance, consistent with its western hotspot offset.
The orbital motion, absolute mass, and high-altitude winds of exoplanet HD209458b
5 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
For extrasolar planets discovered using the radial velocity method, the spectral characterization of the host star leads to a mass-estimate of the star and subsequently of the orbiting planet. In contrast, if also the orbital velocity of the planet would be known, the masses of both star and planet could be determined directly using Newton's law of gravity, just as in the case of stellar double-line eclipsing binaries. Here we report on the detection of the orbital velocity of extrasolar planet HD209458b. High dispersion ground-based spectroscopy during a transit of this planet reveals absorption lines from carbon monoxide produced in the planet atmosphere, which shift significantly in wavelength due to the change in the radial component of the planet orbital velocity. These observations result in a mass determination of the star and planet of 1.00+-0.22 Msun and 0.64+-0.09 Mjup respectively. A ~2 km/sec blueshift of the carbon monoxide signal with respect to the systemic velocity of the host star suggests the presence of a strong wind flowing from the irradiated dayside to the non-irradiated nightside of the planet within the 0.01-0.1 mbar atmospheric pressure range probed by these observations. The strength of the carbon monoxide signal suggests a CO mixing ratio of 1-3x10-3 in this planet's upper atmosphere.
years
2026 5representative citing papers
High-resolution M-band spectroscopy detects super-stellar SiO in TWA 5 B, implying no significant magnesium-silicate clouds and formation consistent with core accretion beyond the CO snowline or gravitational instability with solid enrichment.
JWST/NIRCam observations of 2024 YR4 extend the orbital arc by eight months, reduce 2032 lunar encounter uncertainty by >30x, and rule out impact with a 22,900 ± 800 km miss distance.
J0404+1112 is a 2.93 hr period totally eclipsing WD+BD system with a hot DA white dwarf (T_eff ~28,000 K) and ~40 M_Jup brown dwarf, enabling isolation of nightside emission and serving as a JWST atmospheric benchmark.
Introduces a reflection spectroscopy metric and uses KELT-9 injection-recovery tests to demonstrate that rotational line broadening from rapid stellar rotation and large misalignments must be included when assessing detectability of exoplanet reflected spectra.
citing papers explorer
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Unraveling the Mystery of the Peculiar and Young Hot Jupiter CoRoT-2b II: Phase Resolved Emission Spectroscopy with VLT/CRIRES+ and Gemini-S/IGRINS
Phase-resolved high-resolution spectroscopy of CoRoT-2b measures sub-synchronous rotation at 2.6-sigma significance, consistent with its western hotspot offset.
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The CRIMSON survey I: super-stellar SiO in the directly imaged companion TWA 5 B from high-resolution M-band spectroscopy
High-resolution M-band spectroscopy detects super-stellar SiO in TWA 5 B, implying no significant magnesium-silicate clouds and formation consistent with core accretion beyond the CO snowline or gravitational instability with solid enrichment.
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JWST Observations of Asteroid 2024 YR4 Rule Out a 2032 Lunar Impact and Demonstrate a New Regime for Planetary Defense Follow-up
JWST/NIRCam observations of 2024 YR4 extend the orbital arc by eight months, reduce 2032 lunar encounter uncertainty by >30x, and rule out impact with a 22,900 ± 800 km miss distance.
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J0404+1112: A 3-Hour Eclipsing White Dwarf-Brown Dwarf Probing Multiple Atmospheric Regimes
J0404+1112 is a 2.93 hr period totally eclipsing WD+BD system with a hot DA white dwarf (T_eff ~28,000 K) and ~40 M_Jup brown dwarf, enabling isolation of nightside emission and serving as a JWST atmospheric benchmark.
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Spinning out of focus: The challenge of rotational line broadening in exoplanet reflection spectroscopy
Introduces a reflection spectroscopy metric and uses KELT-9 injection-recovery tests to demonstrate that rotational line broadening from rapid stellar rotation and large misalignments must be included when assessing detectability of exoplanet reflected spectra.