J/MNRAS/473/5324 ExoMol line lists. XXIV. SiH (Yurchenko+, 2018)
ExoMol line lists. XXIV: A new hot line list for silicon monohyrdide, SiH.
Yurchenko S.N., Sinden F., Lodi L., Hill C., Gorman M.N., Tennyson J.
<Mon. Not. R. Astron. Soc. 473, 5324 (2018)>
=2018MNRAS.473.5324Y 2018MNRAS.473.5324Y (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: molecular data - opacity - astronomical data bases: miscellaneous -
planets and satellites: atmospheres - stars: low-mass
Abstract:
SiH has long been observed in the spectrum of our Sun and other cool
stars. Computed line lists SiGHTLY for the main isotopologues of
silicon monohydride, 28SiH, 29SiH, 30SiH and 28SiD are
presented. These line lists consider rotation-vibration transitions
within the ground X 2Π electronic state as well as transitions to
the low-lying A 2Δ and a 4Σ- states. Ab initio
potential energy (PECs) and dipole moment curves (DMCs) along with
spin-orbit and electronic-angular-momentum couplings between them are
calculated using the MRCI level of theory with the MOLPRO package. The
PEC for the ground X state is refined to available experimental data
with a typical accuracy of around 0.01cm-1 or better. The 28SiH
line list includes 11,785 rovibronic states and 1,724,841 transitions
with associated Einstein-A coefficients for angular momentum J up to
82.5 and covering wavenumbers up to 31340cm-1 (>0.319um). Spectra
are simulated using the new line list and comparisons made with
various experimental spectra. These line lists are applicable up to
temperatures of ∼5000K, making them relevant to astrophysical objects
such as exoplanetary atmospheres and cool stars and opening up the
possibility of detection in the interstellar medium.
Description:
The data for each isotopologue are in two parts. The first, s_*.dat
contain lists of rovibronic states. Each state is labelled with the
total angular momentum, state degeneracy, life time, Zeeman Lande-g
factor, total (±) and e/f parities, vibrational quantum number,
projection of the electronic, spin and total angular momenta. Each
state has a unique number, which is the number of the row in which it
appears in the file. This number is the means by which the state is
related to the second part of the data system, the transitions files.
The transition files t_*.dat contain four columns: the reference number
in the energy file of the upper state; that of the lower state; the
Einstein A coefficient of the transition; the transition wavenumber.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
s_28sid.dat 101 21230 States file for the 28SiD molecule
t_28sid.dat 56 3934681 Transition file for the 28SiD molecule
s_28sih.dat 101 11785 States file for the 28SiH molecule
t_28sih.dat 56 1724841 Transition file for the 28SiH molecule
s_29sih.dat 101 11796 States file for the 29SiH molecule
t_29sih.dat 56 1726584 Transition file for the 29SiH molecule
s_30sih.dat 101 11808 States file for the 30SiH molecule
t_30sih.dat 56 1728386 Transition file for the 30SiH molecule
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See also:
J/MNRAS/425/34 : ExoMol line lists for BeH, MgH and CaH (Yadin+, 2012)
J/MNRAS/434/1469 : ExoMol line lists for SiO (Barton+, 2013)
J/MNRAS/437/1828 : ExoMol line list for HCN and HNC (Barber+, 2014)
J/MNRAS/440/1649 : ExoMol line lists for CH4 (Yurchenko+, 2014)
J/MNRAS/442/1821 : ExoMol line list for KCl (Barton+, 2014)
J/MNRAS/445/1383 : ExoMol line list for phosphorus nitride (PN) (Yorke+, 2014)
J/MNRAS/446/2337 : ExoMol line lists for phosphine (PH3) (Sousa-Silva+, 2015)
J/MNRAS/448/1704 : ExoMol line lists for formaldehyde H2CO (Al-Refaie+, 2015)
J/MNRAS/449/3613 : ExoMol line lists for AlO (Patrascu+, 2015)
J/MNRAS/451/634 : ExoMol line lists for NaH and NaD (Rivlin+, 2015)
J/MNRAS/452/1702 : ExoMol line lists for HNO3 (Pavlyuchko+, 2015)
J/MNRAS/454/1931 : ExoMol line lists for CS isotopologues (Paulose+, 2015)
J/MNRAS/456/4524 : ExoMol line lists for CaO (Yurchenko+, 2016)
J/MNRAS/459/3890 : ExoMol line lists for SO2 (Underwood+, 2016)
J/MNRAS/461/1012 : ExoMol line lists for H216O2 (Al-Refaie+, 2016)
J/MNRAS/462/4300 : ExoMol XVII: SO3 (Underwood+, 2016)
J/MNRAS/463/771 : ExoMol. VO high-temperature spectrum (McKemmish+, 2016)
J/MNRAS/466/1363 : ExoMol line list for H218O and H217O (Polyansky+, 2017)
J/MNRAS/468/1717 : ExoMol molecular line lists for H3+ (Mizus+, 2017)
J/MNRAS/470/882 : ExoMol Line List XXI: Nitric Oxide (NO) (Wong+, 2017)
J/MNRAS/471/5025 : ExoMol line lists for 28SiH4 (Owens+, 2017)
Byte-by-byte Description of file: s_*.dat
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Bytes Format Units Label Explanations
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8- 12 I5 --- N State ID, non-negative integer index
14- 25 F12.6 cm-1 E State energy term value in cm-1
30- 32 I3 --- gtot Total state degeneracy
36- 40 F5.1 --- J J-quantum number J$ is the total angular
momentum excluding nuclear spin
43- 53 E11.4 s tau ? Life time
54 A1 --- n_tau [I] I for infinity
55- 63 F9.6 --- g Lande g-factor
65 A1 --- Par [±] Total parity
67 A1 --- e/f e/f-rotationless-parity parity
69- 76 A8 --- State The label of the electronic state
80- 82 I3 --- v Vibrational quantum number
84- 85 I2 --- Lambda Projection of the electronic angular momentum
90- 93 F4.1 --- Sigma Projection of the electronic spin
98-101 F4.1 --- Omega projection of the total angular momentum
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Byte-by-byte Description of file: t_*.dat
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Bytes Format Units Label Explanations
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8- 12 I5 --- N' Upper state ID
20- 24 I5 --- N" Lower state ID
27- 36 E10.5 s-1 A Einstein A-coefficient of the transition
45- 56 F12.6 cm-1 nu Transition wavenumber
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Acknowledgements:
S.N. Yurchenko,
J. Tennyson,
(End) Patricia Vannier [CDS] 10-Nov-2017