CCH+ Ion High-Resolution Ro-Vibrational and Rotational Spectra

385 ro-vibrational lines of the CCH+ ion recorded in the 3066–3184 cm⁻¹ range via leak-out spectroscopy. The data includes derived spectroscopic constants for ground and excited states and has been used to guide the first astronomical detection of CCH+. The dataset was authored by Kim Steenbakkers and last updated in April 2026.

Use Cases

• Calibrating astronomical search models based on derived rotational constants and hyperfine splittings.
• Supporting laboratory astrophysics research based on high-resolution infrared spectra of the CH stretching mode.
• Guiding future detections of CCH+ in space using the provided effective Hamiltonian analysis.

Strengths

• Contains 385 high-resolution ro-vibrational spectral lines.
• Data has already enabled the first detection of CCH+ in the Orion Bar region.
• Includes derived constants for spin-orbit coupling, centrifugal distortion, and Λ-doubling.

Limitations

• Row count and column-level documentation are unknown.
• The dataset is very small at 24.1 KB, indicating limited scope.

Provenance

Source

figshare

Collection Method

Recorded via leak-out spectroscopy and analyzed using a two-color millimeterwave-infrared scheme.

Freshness

Last updated 2026-04-14 04:13:32