HCO

Cross sections

Cross section figure.


[An explanation of the cross sections in this database]
[All cross sections — variable wavelength scale]
[All cross sections — variable wavelength scale in binary hdf5 format]
[All cross sections — 0.1nm wavelength scale]
[Photodissociation cross section — separate lines and continuum]
[Download cross section figure as pdf]

Photodissociation and ionisation rates (s-1)

Radiation Photodissociation Photoionisation
ISRF 1.10e-09
Mathis 4.85e-10
4000K 5.00e-06
10000K 2.75e-09
20000K 8.77e-10
Lyman-alpha 1.16e-11
Solar 1.66e-08
TW-Hya 7.41e-09
Cosmic ray UV 5.29e-14

[An explanation of the interstellar photo rates.]
[An explanation of the cosmic-ray induced photo rates.]
[An explanation of the radiation fields listed below.]
[Download all rates in a csv file.]

Shielding functions and fitted constants

Photodissociation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF 1.67 2.43 0.61 2.18 [Download] [Download]
Mathis 1.67 2.42 0.61 2.17 [Download] [Download]
4000K 1.72 2.48 0.64 2.26 [Download] [Download]
10000K 1.64 2.38 0.64 2.16 [Download] [Download]
20000K 1.65 2.40 0.62 2.16 [Download] [Download]
Lyman-alpha 2.11 2.97 0.58 2.70 [Download] [Download]
Solar 1.73 2.49 0.65 2.27 [Download] [Download]
TW-Hya 1.65 2.40 0.63 2.17 [Download] [Download]

Photoionisation

Radiation γE2 γexp k0fit γfit Line data Dust data
ISRF - - - -
Mathis - - - -
4000K - - - -
10000K - - - -
20000K - - - -
Lyman-alpha - - - -
Solar - - - -
TW-Hya - - - -

[An explanation of the shielding functions and parameterisations.]
[Download all γ factors in a csv file.]
[Download all dust and line shielding functions in a zip file.]