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Rotational spectroscopy of AlO Low-N transitions of astronomical interest in the X-2 Sigma(+) state
KTH, School of Engineering Sciences (SCI), Applied Physics.
2009 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 508, no 2, 1067-1072 p.Article in journal (Refereed) Published
Abstract [en]

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 X-2 Sigma(+) state of AlO have been reinvestigated. Methods. Comparisons between Fourier transform and microwave data indicate a discrepancy regarding the derived value of gamma(D) in the v = 0 level of the ground state. This discrepancy is discussed in the light of comparisons between experimental data and synthesized rotational spectra in the v = 0, 1 and 2 levels of X-2 Sigma(+). Results. A list of calculated rotational lines in v = 0, 1 and 2 of the ground state up to N' = 11 is presented which should aid astronomers in analysis and interpretation of observed AlO data and also facilitate future searches for this radical.

Place, publisher, year, edition, pages
2009. Vol. 508, no 2, 1067-1072 p.
Keyword [en]
molecular data, molecular processes, ISM: molecules, radio lines: stars
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-32339DOI: 10.1051/0004-6361/200913274ISI: 000273296700053Scopus ID: 2-s2.0-78650858875OAI: oai:DiVA.org:kth-32339DiVA: diva2:410240
Note
QC 20110413Available from: 2011-04-13 Created: 2011-04-12 Last updated: 2017-12-11Bibliographically approved

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