Volume 508, Number 2, December III 2009
|Page(s)||1067 - 1072|
|Section||Atomic, molecular, and nuclear data|
|Published online||21 October 2009|
Rotational spectroscopy of AlO
Low-N transitions of astronomical interest in the state
KTH AlbaNova University Center, Department of Applied Physics, 106 91 Stockholm, Sweden e-mail: email@example.com
2 Astronomy and Astrophysics Division, Physical Research Laboratory, Ahmedabad 380009, Gujarat, India e-mail: firstname.lastname@example.org
Accepted: 9 October 2009
Aims. The detection of rotational transitions of the AlO radical at millimeter wavelengths from an astronomical source has recently been reported. In view of this, rotational transitions in the ground state of AlO have been reinvestigated.
Methods. Comparisons between Fourier transform and microwave data indicate a discrepancy regarding the derived value of in the level of the ground state. This discrepancy is discussed in the light of comparisons between experimental data and synthesized rotational spectra in the , 1 and 2 levels of .
Results. A list of calculated rotational lines in , 1 and 2 of the ground state up to is presented which should aid astronomers in analysis and interpretation of observed AlO data and also facilitate future searches for this radical.
Key words: molecular data / molecular processes / ISM: molecules / radio lines: stars
© ESO, 2009
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