Optical Zeeman Spectroscopy of the (0, 0) Bands of the B 3Π-X 3Δ and A 3Φ-X 3Δ Transitions of Titanium Monoxide, TiO

Details Optical Zeeman Spectroscopy of the (0, 0) Bands of the B 3Π-X 3Δ and A 3Φ-X 3Δ Transitions of Titanium Monoxide, TiO Optical Zeeman Spectroscopy of the (0, 0) Bands of the B 3Π-X 3Δ and A 3Φ-X 3Δ Transitions of Titanium Monoxide, TiO

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...628..567v&link_type=abstract

The Astrophysical Journal, Volume 628, Issue 1, pp. 567-573.

Astronomy and Astrophysics

Astronomy

8

Astrochemistry, Molecular Data, Molecular Processes, Stars: Late-Type, Stars: Magnetic Fields

Scientific paper

The Zeeman effect on lines in the (0, 0) band of the B 3Π-X 3Δ (γ') system and in the (0, 0) band of the A 3Φ-X 3Δ (γ) system of titanium monoxide, TiO, have been recorded and analyzed. Magnetic tuning of the low rotational spectral features recorded at high resolution (FWHM ~=35 MHz) and at field strengths of up to 1.2 kG is accurately modeled using an effective Zeeman Hamiltonian. A comparison is made with previous predictions, which were based on field-free spectroscopic parameters. It is shown that the large Λ-doubling in the B 3Π state necessitates the inclusion of ΔJ=+/-1 matrix elements in the representation of the effective Hamiltonian operator. The observed spectra could only be modeled by allowing the electronic spin and orbital magnetic g-factors, gS and gL, of the B 3Π and A 3Φ states to deviate from 2.002 and 1.000. Nonadiabatic mixing with the nearby C 3Δ state is proposed as the cause of these deviations.

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