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\title{IMPROVED THEORY OF THE EFFECTIVE DIPOLE MOMENT AND ABSOLUTE
LINE STRENGTHS OF THE XY$_2$ ASYMMETRIC TOP MOLECULE IN THE $X^2B_1$
DOUBLET ELECTRONIC STATE}

\author{\underline{\FirstName O. N. \LastName ULENIKOV}, \underline{\FirstName E. S. \LastName
BEKHTEREVA}, \underline{\FirstName O. V. \LastName GROMOVA},
\underline{\FirstName A. N. \LastName KAKAULIN}}
\address{National Research Tomsk Polytechnic University, 30, av. Lenina, 634050 Tomsk,
Russia}

\author{\underline{\FirstName C. \LastName SYDOW} and
  \underline{\FirstName S. \LastName BAUERECKER}}
\address{Institut f\"{u}r Physikalische und Theoretische Chemie, Technische Universit\"{a}t Braunschweig, D - 38106,
Braunschweig, Germany}



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\pagestyle{fancy} \fancyhead[C]{{\footnotesize \textit{HRMS, 28th
Colloquium, Dijon, France,
  Aug. 28 - Sept. 1, 2023}}}
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\category {1,3}
\begin{document}

\maketitle

\index{absolute line strengths}

A new effective dipole moment model for the XY$_{2}$
($C_{2v}-$symmetry) molecule in a doublet electronic state is
derived that includes (as special cases) all currently known models
of effective dipole moment for such type molecules, and allows, at
the same time, to take into account an influence of spin--rotation
interactions on the effective dipole moment operator which were not
taken into account in the before studies.\\

The study was financially supported by the Russian Science
Foundation, project 22--22--00171.

\end{document}
