J/MNRAS/468/1717 ExoMol molecular line lists for H3+ (Mizus+, 2017)
ExoMol molecular line lists.
XX: A comprehensive line list for H3+.
Mizus I.I., Alijah A., Zobov N.F., Lodi L., Kyuberis A.A., Yurchenko S.N.,
Tennyson J.
<Mon. Not. R. Astron. Soc. 468, 1717 (2017)>
=2017MNRAS.468.1717M 2017MNRAS.468.1717M (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: molecular data - opacity - astronomical data bases: miscellaneous -
planets and satellites: atmospheres - brown dwarfs - stars: low-mass
Abstract:
H3+ is a ubiquitous and important astronomical species whose
spectrum has been observed in the interstellar medium, planets and
tentatively in the remnants of supernova SN1897a. Its role as a cooler
is important for gas giant planets and exoplanets, and possibly the
early Universe. All this makes the spectral properties, cooling
function and partition function of H3+ key parameters for
astronomical models and analysis. A new high-accuracy, very extensive
line list for H3+ called MiZATeP was computed as part of the
ExoMol project alongside a temperature-dependent cooling function and
partition function as well as lifetimes for excited states. These data
are made available in electronic form as supplementary data to this
article and at www.exomol.com.
Description:
A new high-accuracy, very extensive line list for H3+ called
MiZATeP was computed as a part of the ExoMol project alongside
temperature-dependent cooling function and partition function, and
lifetimes for individual excited states.
The transition file Trans.dat contains three columns: the reference
number in the energy file of the upper state, that of the lower state
and the Einstein A coefficient of the transition. These entries are
ordered by increasing frequency. The energy file and the transitions
files are bzipped, and need to be extracted before use.
We also provide the partition and cooling functions in the range 0 to
5000K in steps of 1K.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
states.dat 78 158721 Labelled rovibrational states of H3+
trans.dat 36 127542657 Transition file (Einstein coefficients, 1/s),
the transitions are sorted according with
wavenumber
pf.dat 28 5000 Partition and cooling functions of H3+ in step
of 1K
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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/460/4063 : ExoMol line list for H2S AYT2 (Yurchenko+, 2016)
J/MNRAS/461/1012 : ExoMol line lists for H216O2 (Al-Refaie+, 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)
Byte-by-byte Description of file: states.dat
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Bytes Format Units Label Explanations
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7- 12 I6 --- i Energy level index
14- 25 F12.6 cm-1 E State energy in wavenumbers
30- 32 I3 --- Gtot Total state degeneracy
38- 39 I2 --- J Rotational quantum number
43- 52 E10.5 s tau ? Lifetime of the state,
--- denotes unknown lifetime values of states
without accurate labelling
53 A1 --- n_tau [i] i for INF, means that the given state is
meta-stable
55 A1 --- e/f [e/f] A label indicating the e/f state parity
57- 60 A4 --- Sym A label indicating the total symmetry (D3h);
un for undefined
62- 63 I2 --- v1 ?=-1 Symmetric stretch quantum number (QN);
-1 if not present
65- 66 I2 --- v2 ?=-1 Bending QN; -1 if not present
68- 69 I2 --- l2 Vib. angular momentum QN; -1 if not present
71- 72 I2 --- G ?=-1 Absolute value of QN G = k - l2
(Watson 1984); -1 if not present
74- 75 A2 --- U ?=-1 U-notation of Watson (1984);
-1 if not present
77- 78 I2 --- K ?=-1 Absolute value of the projection of J on
the C3 axis; -1 if not present
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Byte-by-byte Description of file: trans.dat
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Bytes Format Units Label Explanations
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1- 12 I12 --- i" Upper state ID
14- 25 I12 --- i' Lower state ID
27- 36 E10.4 s-1 A Einstein A-coefficient of the transition
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Byte-by-byte Description of file: pf.dat
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Bytes Format Units Label Explanations
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1- 6 F6.1 K T Temperature
8- 17 F10.4 --- Q Partition function
19- 28 E10.5 W/sr W Cooling function (Watts/(Molecule x steradian))
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Acknowledgements:
J. Tennyson, j.tennyson(at)ucl.ac.uk
(End) Patricia Vannier [CDS] 22-Mar-2017