Observation of New Bands in theA1Πu–X1Σg+Laser Induced Fluorescence Spectrum of C3

Baker, Jacob; Bramble, Simon K.; Hamilton, Peter A.

doi:10.1006/jmsp.1996.7235

Cited by 22 publications

(18 citation statements)

References 22 publications

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“…For the excited vibronic states of the A 1 Π u electronic state, the mean rotational constant B v for this electronic state given by Herzberg (1966) is used. For the (06 − 0) and (04 + 0) vibronic levels we use the values published by Baker et al (1997).…”

Section: The Modelmentioning

confidence: 99%

“…After publication of the pioneering work of Denis- Gausset & Sauval (1968), a number of theoretical calculations and laboratory experiments of the C 3 radical have appeared (Römelt et al 1978;Becker et al 1979;Cooper & Jones 1979;Jungen & Merer 1980;Chabalowski et al 1986;Schmuttenmaer et al 1990;Baker et al 1997). These works have given more information concerning the electronic oscillator strength, the Franck-Condon factors and the wavelengths of some poorly known transitions.…”

Section: Introductionmentioning

confidence: 99%

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A fluorescence model of the C₃radical in comets

Rousselot¹,

Arpigny

Rauer³

et al. 2001

A&A

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Abstract. Theoretical resonance fluorescence calculations are presented of the triatomic C3 radical and are compared with observations of the C3 emission in comets Hale-Bopp and de Vico. A theoretical model of the C3 vibration-rotational structure in theThe model takes into account the detailed structure of the bending mode ν2 which is responsible for the emission of the 4050Å group. A total of 1959 levels are considered, with 515 levels in the ground state. The main effort is to model high-resolution spectra of the 4050Å emission in comets C/1995 O1 Hale-Bopp and 122P/1995 S1 de Vico. The agreement between observed and theoretical spectra is good for a value of the dipole moment derivative of dµ dr ≈ 2.5 DebyeÅ −1 . The modeled C3 emission exhibits a pronounced Swings effect.

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Section: The Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A fluorescence model of the C₃radical in comets

Rousselot¹,

Arpigny

Rauer³

et al. 2001

A&A

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“…The CS 2 spectrum has been studied by Cossard-Magos et al (1996. New bands in the A 1 II tl -X 1 S+ system of C3 have been observed through laser induced fluorescence (Baker et al 1997). A 630 nm band system of FeH has been identified with the e 6 n-c 6 E"'" transition (Goodridge, Hullah & Brown 1998) and the 532 nm green bands with e 8 II-6 A (Goodridge et al 1997).…”

Section: Electronic Spectramentioning

confidence: 99%

Commission 14: Atomic and Molecular Data: (Donnees Atomiques et Moleculaires)

Rostas¹,

Smith²,

Berrington³

et al. 2000

Trans. Int. Astron. Union

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In recognition of its special interdisciplinary character, IAU Commission 14 is linked directly to the Executive Committee. The Commission’s role is to inform the astronomical community of new developments in the diverse fields of research which involve atoms and molecules. Conversely it endeavors to sensitize the research community active in those fields to the specific needs of astronomy, especially concerning basic data and modeling tools. More generally, Commission 14 tries to foster long term relations and collaborations between the two communities and, when necessary, to alert funding authorities to the specific needs of ground and space based astronomy for specific atomic and molecular data. This report is one of the main contributions of Commission 14 to the information of the astronomical community. Several meetings concerned, at least in part, with the need and availability of atomic and molecular data for astrophysics were also sponsored or co-sponsored. In the last triennium, Commission 14 cosponsored IAU Symposium 194 “Astrochemistry: From Molecular Cloud to Planetary Systems” held in Sogwipo (Korea) from Aug. 23 to 27, 1999 and organized by Commission 34. A Joint Discussion: JD1 on “Atomic and Molecular Data for Astrophysics, New Developments, Case Studies and Future Needs” has been planned for the XXIVth IAU General Assembly in Manchester (Aug. 7-19, 2000) and cosponsored by Commissions 15, 16, 29, 34, 36, 40 and 44. Several other Joint Discussions to be held at the Manchester General Assembly are co-sponsored by this commission.

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“…These upper states must have odd quanta of both m 2 and m 3 in order to satisfy the group theory requirements. Following this, Baker et al [27,29] recorded a C 3 excitation spectrum with population only in the ground state stretching manifolds, nm 1 and m 3 . They were able to assign some P u vibronic levels with v 0 1 ¼ 4 and 5, and to identify a number of P g vibronic levels with v 0…”

Section: Introductionmentioning

confidence: 99%

“…Analysis of theÃ 1 P u state [4,15,16,19,[25][26][27][28][29][30][31][32] is complicated by the overlapping of many of the bands, the irregularity of the vibrational structure caused by the orbital angular momentum and the presence of rotational perturbations. When the 0 0 0-0 0 0 band of the 4050 Å system was found in spectra of the diffuse interstellar medium, [10] it was noticed [11] that the perturbations had resulted in a mis-assignment of the astrophysically-important R(0) line at 24676.7 cm À1 .…”

Section: Introductionmentioning

confidence: 99%