Rotational spectroscopy of AlO Low-N transitions of astronomical interest in the X2Σ+ state

被引:9
作者
Launila, O. [1 ]
Banerjee, D. P. K. [2 ]
机构
[1] KTH AlbaNova Univ Ctr, Dept Appl Phys, S-10691 Stockholm, Sweden
[2] Phys Res Lab, Astron & Astrophys Div, Ahmadabad 380009, Gujarat, India
关键词
molecular data; molecular processes; ISM: molecules; radio lines: stars; HYPERFINE-STRUCTURE; V4332-SAGITTARII; SPECTRUM;
D O I
10.1051/0004-6361/200913274
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
引用
收藏
页码:1067 / 1072
页数:6
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