The interaction in CO+: Deperturbation analyses of B–A and A–X bands of 12C16O+, 13C16O+ and 14C16O+

Coxon, John A.; Kępa, R.; Piotrowska, Izabela

doi:10.1016/j.jms.2010.06.001

Cited by 9 publications

(2 citation statements)

References 41 publications

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“…From the X 2 Σ + v = 0 levels, accurate energy levels of the A 2 Π i v = 2, 3, 4 states were computed with the transition frequencies published by K ępa et al ( 2004) for the (2,0), (3,0), and (4,0) bands. The remaining energy levels (v = 3, 4, 5 of the X 2 Σ + state and v = 5 of the A 2 Π i state) were computed from the molecular parameters published by K ępa et al (2004; rotational constants) and Coxon et al (2010) (band origin). All the levels with a rotational quantum number J ≤ 10.5 are taken into account in our model.…”

Section: Co + Fluorescence Modelmentioning

confidence: 99%

¹²CO⁺ and ¹³CO⁺ fluorescence models for measuring the ¹²C/¹³C isotopic ratio in comets

Rousselot,

Jehin,

Hutsemékers

et al. 2024

A&A

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CO is an abundant species in comets, creating CO$^+$ ion with emission lines that can be observed in the optical spectral range. A good modeling of its fluorescence spectrum is important for a better measurement of the CO$^+$ abundance. Such a species, if abundant enough, can also be used to measure the 12C/13C isotopic ratio. This study uses the opportunity of a high CO content observed in the comet C/2016 R2 (PanSTARRS), which created bright CO$^ $ emission lines in the optical range, to build and test a new fluorescence model of this species and to measure the 12C/13C isotopic ratio in this chemical species for the first time with ground-based observations. Thanks to laboratory data and theoretical works available in the scientific literature, we developed a new fluorescence model both for 12CO$^+$ and 13CO$^+$ ions. The 13CO$^+$ model can be used for coadding faint emission lines and to obtain a sufficient signal-to-noise ratio to detect this isotopologue. Our fluorescence model provides a good modeling of the 12CO$^+$ emission lines, allowing us to publish revised fluorescence efficiencies. Based on similar transition probabilities for 12CO$^+$ and 13CO$^+,$ we derive a 12C/13C isotopic ratio of 73pm 20 for CO$^+$ in comet C/2016 R2. This value is in agreement with the Solar System ratio of 89pm 2 within the error bars, but is also consistent with the 12C/13C ratio in local interstellar medium (68pm 15).

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Section: Co + Fluorescence Modelmentioning

confidence: 99%

¹²CO⁺ and ¹³CO⁺ fluorescence models for measuring the ¹²C/¹³C isotopic ratio in comets

Rousselot,

Jehin,

Hutsemékers

et al. 2024

A&A

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“…They [8] re-investigated 10 bands of the comet-tail system and obtained a set of revised constants for the A and X states eight years later. Most recently, Coxon et al [9] reported their study of the A -X interaction in CO + including its isotopes.…”

Section: Introductionmentioning

confidence: 99%

Global analysis of the Comet-tail system of¹²C¹⁶O⁺

2013

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A global analysis of the ro-vibrational spectra of 19 bands in the comet-tail (A 2 Π i -X 2 Σ + ) system of the 12 C 16 O + cation is presented, and the precise molecular constants of the vibrational levels involved are obtained via a weighted nonlinear least-squares fitting procedure. Furthermore, the resultant precise equilibrium molecular constants enable us to achieve accurate Rydberg-Klein-Rees (RKR) potential curves for both the A and X states, yielding the accurate Franck-Condon factor and band origin of each band in this system.

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Analytical potential energy functions for CO$$^+$$ in its ground and excited electronic states

Araújo,

Ballester,

Lugão

et al. 2024

J Mol Model

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The interaction in CO+: Deperturbation analyses of B–A and A–X bands of 12C16O+, 13C16O+ and 14C16O+

Cited by 9 publications

References 41 publications

¹²CO⁺ and ¹³CO⁺ fluorescence models for measuring the ¹²C/¹³C isotopic ratio in comets

¹²CO⁺ and ¹³CO⁺ fluorescence models for measuring the ¹²C/¹³C isotopic ratio in comets

Global analysis of the Comet-tail system of¹²C¹⁶O⁺

Analytical potential energy functions for CO$$^+$$ in its ground and excited electronic states

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The interaction in CO+: Deperturbation analyses of B–A and A–X bands of 12C16O+, 13C16O+ and 14C16O+

Cited by 9 publications

References 41 publications

12CO+ and 13CO+ fluorescence models for measuring the 12C/13C isotopic ratio in comets

12CO+ and 13CO+ fluorescence models for measuring the 12C/13C isotopic ratio in comets

Global analysis of the Comet-tail system of12C16O+

Analytical potential energy functions for CO$$^+$$ in its ground and excited electronic states

Contact Info

Product

Resources

About

¹²CO⁺ and ¹³CO⁺ fluorescence models for measuring the ¹²C/¹³C isotopic ratio in comets

¹²CO⁺ and ¹³CO⁺ fluorescence models for measuring the ¹²C/¹³C isotopic ratio in comets

Global analysis of the Comet-tail system of¹²C¹⁶O⁺