ExoMol line list XXXIV: A Rovibrational Line List for Phosphinidene (PH) in its $X,{}^3Sigma^-$ and $a,{}^1Delta$ Electronic States. (arXiv:1907.03367v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Langleben_J/0/1/0/all/0/1">Jonathan Langleben</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tennyson_J/0/1/0/all/0/1">Jonathan Tennyson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yurchenko_S/0/1/0/all/0/1">Sergei N. Yurchenko</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bernath_P/0/1/0/all/0/1">Peter Bernath</a>
A rovibronic line list for the ground ($X$ $^3Sigma^-$) and first excited
($a$ $^1Delta$) states of phosphinidene, $^{31}$PH, is computed. The line list
is designed for studies of exoplanetary and cool stellar atmospheres with
temperatures up to 4000 K. A combination of empirical and ab initio data are
used to produce the line list: potential energy curves (PECs) are fitted using
experimental transition frequencies; these transitions are reproduced with a
root mean square error of 0.01 cm$^{-1}$. The nuclear Schr”{o}dinger is solved
using these PECs plus Born-Oppenheimer and spin splitting correction terms.
Line intensities and Einstein $A$ coefficients are computed using ab initio
Dipole Moment Curves (DMC) $X$-$X$ and $a$-$a$. The resulting LaTY line list,
which contains 65055 transitions for 2528 rovibronic states up to 24500
cm$^{-1}$ and $J=80$ is used to simulate spectra in emission and absorption at
a range of temperatures. The line list is
made available in electronic form at the CDS and ExoMol databases.
A rovibronic line list for the ground ($X$ $^3Sigma^-$) and first excited
($a$ $^1Delta$) states of phosphinidene, $^{31}$PH, is computed. The line list
is designed for studies of exoplanetary and cool stellar atmospheres with
temperatures up to 4000 K. A combination of empirical and ab initio data are
used to produce the line list: potential energy curves (PECs) are fitted using
experimental transition frequencies; these transitions are reproduced with a
root mean square error of 0.01 cm$^{-1}$. The nuclear Schr”{o}dinger is solved
using these PECs plus Born-Oppenheimer and spin splitting correction terms.
Line intensities and Einstein $A$ coefficients are computed using ab initio
Dipole Moment Curves (DMC) $X$-$X$ and $a$-$a$. The resulting LaTY line list,
which contains 65055 transitions for 2528 rovibronic states up to 24500
cm$^{-1}$ and $J=80$ is used to simulate spectra in emission and absorption at
a range of temperatures. The line list is
made available in electronic form at the CDS and ExoMol databases.
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