Thaddeus et al. 1974
Thaddeus, P., J. Mather, J.H. Davis, and G.N. Blair, 1974: Detection of the J=1→0 rotational transition of vibrationally excited silicon monoxide. Astrophys. J., 192, L33-L36.
The ν=1, J=1→0 rotational transition of SiO at 43.1 GHz has been detected in the direction of Becklin's star in the Orion Nebula, and in the M-type star W Hya. In Orion two velocity components are observed, one (the stronger) at a radial velocity of 17 km/s, the other at -7 km/s; in W Hya a single line is observed at 39 km/s. In each case a line at the same radial velocity has been observed at 86.2 GHz in the ν=1, J=2→1 transition, so that the presence of vibrationally excited SiO would seem to be ocnfirmed beyond a reasonable doubt. In the ν=1 state, the photon fluxes of the J=2→1 and 1→0 transitions are about equal, suggested saturated masers occupying the same region of space.
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Thaddeus, P., Mather, J., Davis, J.H., and Blair, G.N.: Detection of the J=1→0 rotational transition of vibrationally excited silicon monoxide, Astrophys. J., 192, L33-L36, 1974.
Thaddeus, P., J. Mather, J.H. Davis, and G.N. Blair (1974), Detection of the J=1→0 rotational transition of vibrationally excited silicon monoxide, Astrophys. J., 192, L33-L36.
Thaddeus, P., J. Mather, J.H. Davis, and G.N. Blair, 1974: Detection of the J=1→0 rotational transition of vibrationally excited silicon monoxide. Astrophys. J., 192, L33-L36.
Thaddeus, P., Mather, J., Davis, J.H., & Blair, G.N. 1974, Astrophys. J., 192, L33.
Thaddeus P, Mather J, Davis JH, Blair GN. Detection of the J=1→0 rotational transition of vibrationally excited silicon monoxide, Astrophys J 1974;192:L33-L36.
P. Thaddeus, J. Mather, J.H. Davis, G.N. Blair, Astrophys. J. 192, L33-L36 (1974).
