Parameters of the hyperfine components of NH3 inversion lines observed toward NGC 7538 IRS1.
|(J, K)||(MHz)||(km s-1)||(Jy)||(km s-1)||(Jy km s-1)||(τ)|
Notes. The frequency separations (ΔνHF, Cols. 2 and 3) of the four satellite components can be calculated using quantum mechanics formalism for a symmetric molecular rotor. The corresponding velocity separations (ΔVHF) are also reported in Cols. 4 and 5. ams (Col. 6) is the theoretical ratio of the satellite line to the main line strengths. Fpeak, Fint, and ΔV1/2 were fitted simultaneously for all the hyperfine quadrupole satellite components assuming a Gaussian shape for each of the hyperfine lines. The values reported in the table are average values of the four Gaussians fitted to the HFS satellites. τ (Col. 10) is the line opacity estimated numerically with Eq. (A.1).
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