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J/MNRAS/357/471 Calculated spectra for HeH^+^ (Engel+, 2005)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
3hed.dat 3heh.dat 4hed.dat 4heh.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/MNRAS/357/471
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drwxr-xr-x 2 cats archive 296 Jan 12 2023 [TAR file]
-rw-r--r-- 1 cats archive 493 Dec 19 2022 .message
-r--r--r-- 1 cats archive 4274 Apr 3 2005 ReadMe
-r--r--r-- 1 cats archive 218214 Feb 23 2005 3hed.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 106515 Feb 23 2005 3heh.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 253773 Feb 23 2005 4hed.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 115911 Feb 23 2005 4heh.dat [txt] [txt.gz] [fits] [fits.gz] [html]
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-rw-r--r-- 1 cats archive 2047 Mar 5 2008 +footg8.gif Beginning of ReadMe :J/MNRAS/357/471 Calculated spectra for HeH^+^ (Engel+, 2005)
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Calculated spectra for HeH^+^ and its effect on the opacity of
cool metal-poor stars.
Engel E.A., Doss N., Harris G.J., Tennyson J.
<Mon. Not. R. Astron. Soc., 357, 471-477 (2005)>
=2005MNRAS.357..471E
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ADC_Keywords: Atomic physics ; Opacities ; Radio lines
Keywords: molecular data - plasmas - infrared: general
Abstract:
The wavelength and Einstein A coefficient are calculated for all
rotation-vibration transitions of ^4^HeH^+^, ^3^HeH^+^, ^4^He^2^H^+^
and ^3^He^2^H^+^, giving a complete line list and the partition
function for ^4^HeH^+^ and its isotopologues. This opacity is included
in the calculation of the total opacity of low-metallicity stars and
its effect is analysed for different conditions of temperature,
density and hydrogen number fraction. For a low helium number fraction
(as in the Sun), it is found that HeH^+^ has a visible but small
effect for very low densities (rho<=10^-10^g/cm^3^), at temperatures
around 3500K. However, for high helium number fraction, the effect of
HeH^+^ becomes important for higher densities (rho<=10^-6^g/cm^3^),
its effect being most important for a temperature around 3500K.
Synthetic spectra for a variety of different conditions are presented.
Description:
The line lists of all the transitions allowed by the dipole transition
selection rules are given for ^4^HeH^+^, ^3^HeH^+^, ^4^HeD^+^ and
^3^HeD^+^. They includes the vibrational quantum number, the
rotational quantum number and the energy of the lower and upper
states, the transition frequency and the Einstein A coefficient
associated. The line lists were calculated using the program LEVEL 7.5
(Le Roy, 2002, Univ. Waterloo Chemical Physics Research Report CP-655,
http://scienide.uwaterloo.ca/~leroy/level/ ).