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November 11, 2025The Astronomical JournalOpen Access

Identification of Likely Methane Absorption Features in the Optical Spectra of Titan

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Authors

SSSirinrat SithajanLKLalita KaewbiangHJHugh R A Jones

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Overview

Analysis of high-resolution optical spectra reveals methane absorption features in Titan, suggesting improved detection methods.

Key Points

  • Detection limit for feature identification corresponds to a methane absorption coefficient of approximately 0.02 km am−1.
  • Analysis used optical spectra from the Echelle Spectrograph for Rocky Exoplanet and Stable Spectroscopic Observations.
  • Characterization of intrinsic features identified 6195 absorption features in the ESPRESSO spectra, including newly reported lines.
  • Higher spectral resolution data from ESPRESSO detected twice as many features as UVES in overlapping regions.

Cite This Study

Sithajan et al. (2025) studied this question.

synapsesocial.com/papers/69252e90c0ce034ddc356097https://doi.org/10.3847/1538-3881/ae0e1f
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Identification of Likely Methane Absorption Features in the Optical Spectra of Titan2025
  2. 2A study of very high resolution visible spectra of Titan: Line characterisation in visible CH4 bands and the search for C32024
  3. 3A study of very high resolution visible spectra of Titan - Caracterization of visible CH4 bands and the search for C32024 · 1 citations
  4. 4Detection of C3 in Titan with VLT-ESPRESSO2026 · 2 citations
  5. 5Haze, Methane, and Carbon Monoxide in Titan’s North Polar Atmosphere from a Cassini/VIMS Specular Transmission Spectrum on the T104 Flyby2026