J/A+A/484/755 Oxygen recombination lines from Cas A knots (Docenko+, 2008)
Optical and near-infrared recombination lines of oxygen ions from
Cassiopeia A knots.
Docenko D., Sunyaev R.A.
<Astron. Astrophys. 484, 755 (2008)>
=2008A&A...484..755D 2008A&A...484..755D
ADC_Keywords: Supernova remnants ; Atomic physics
Keywords: atomic processes - supernovae: individual: Cassiopeia A -
infrared: ISM
Abstract:
Fast-moving knots (FMK) in the Galactic supernova remnant Cassiopeia A
consist mainly of metals and allow us to study element production in
supernovae and to investigate shock physics in great detail.
We discuss and suggest observations of a previously unexplored class
of spectral lines, the metal recombination lines in optical and
near-infrared bands, emitted by the cold ionized and cooling plasma in
fast-moving knots.
Description:
Tables contain wavelengths and intensities or emissivities of the fine
structure components of the O, Si and S ion optical and near-infrared
recombination lines (RLs) in the (nlK) -> (n'l'K') resolution.
Emissivities and wavelengths are given for O II-VI, Si II-III and S
II-V ion α-, β- and γ-line components in the
wavelength range between 0.3 and 5 micron and temperature range
between 103 and 105K. Only low-density emissivity values are
included in tables and only transitions onto levels with nl≥5 are
considered.
Intensities and wavelengths are given for O II-VI ion α-,
β- and γ-line components in the same wavelength range, as
computed based on the Sutherland & Dopita (1995ApJ...439..381S 1995ApJ...439..381S) model
of the oxygen-rich plasma emission in supernova remnants applied to
Cassiopeia A fast-moving knots.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 141 1405 Low-density RL components of O II
table6.dat 141 1779 Low-density RL components of O III
table7.dat 141 319 Low-density RL components of O IV
table8.dat 141 471 Low-density RL components of O V
table9.dat 141 663 Low-density RL components of O VI
table10.dat 141 73 Low-density RL components of Si II
table11.dat 141 177 Low-density RL components of Si III
table12.dat 141 1405 Low-density RL components of S II
table13.dat 141 1779 Low-density RL components of S III
table14.dat 141 319 Low-density RL components of S IV
table15.dat 141 471 Low-density RL components of S V
table16.dat 53 1406 Post-shock RL components of O II
table17.dat 53 1779 Post-shock RL components of O III
table18.dat 53 320 Post-shock RL components of O IV
table19.dat 53 471 Post-shock RL components of O V
table20.dat 53 664 Post-shock RL components of O VI
table21.dat 53 1405 Pre-shock RL components of O II
table22.dat 53 1779 Pre-shock RL components of O III
table23.dat 53 319 Pre-shock RL components of O IV
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Byte-by-byte Description of file: table?.dat table1[012345].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Jc Total electronic angular momentum of the core
4- 6 I3 --- nu Upper transition level principal quantum number
7- 9 I3 --- lu Upper transition level orbital angular
momentum quantum number
10- 12 I3 --- Ku Upper transition level quantum number K doubled
13- 15 I3 --- nl Lower transition level principal quantum number
16- 18 I3 --- ll Lower transition level orbital angular
momentum quantum number
19- 21 I3 --- Kl Lower transition level quantum number K doubled
22- 31 F10.5 um Lambda ]0.3,5.0[ Line wavelength
32- 42 E11.3 cm3/s eps3.0 Line low-density emissivity at T=103.0K
43- 53 E11.3 --- frac3.0 Emissivity fraction of the total (nu-nl) line
at T=103.0K
54- 64 E11.3 cm3/s eps3.5 Line low-density emissivity at T=103.5K
65- 75 E11.3 --- frac3.5 Emissivity fraction of the total (nu-nl) line
at T=103.5K
76- 86 E11.3 cm3/s eps4.0 Line low-density emissivity at T=104.0K
87- 97 E11.3 --- frac4.0 Emissivity fraction of the total (nu-nl) line
at T=104.0K
98-108 E11.3 cm3/s eps4.5 Line low-density emissivity at T=104.5K
109-119 E11.3 --- frac4.5 Emissivity fraction of the total (nu-nl) line
at T=104.5K
120-130 E11.3 cm3/s eps5.0 Line low-density emissivity at T=105.0 K
131-141 E11.3 --- frac5.0 Emissivity fraction of the total (nu-nl) line
at T=105.0 K
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Byte-by-byte Description of file: table1[6789].dat table2?.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Jc Total electronic angular momentum of the core
4- 6 I3 --- nu Upper transition level principal quantum number
7- 9 I3 --- lu Upper transition level orbital angular
momentum quantum number
10- 12 I3 --- Ku Upper transition level quantum number K doubled
13- 15 I3 --- nl Lower transition level principal quantum number
16- 18 I3 --- ll Lower transition level orbital angular
momentum quantum number
19- 21 I3 --- Kl Lower transition level quantum number K doubled
22- 31 F10.5 um Lambda ]0.3,5.0[ Line wavelength
32- 42 E11.3 mW/m2 Flux Line flux (1)
43- 53 E11.3 --- Frac Emissivity fraction of the total (nu-nl) line
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Note (1): The line flux is computed based on the Sutherland & Dopita
(1995ApJ...439..381S 1995ApJ...439..381S) model of the oxygen-rich plasma emission.
Emitting shock front area in the cloud of 1033cm, and distance to
Cassiopeia A of 3.4kpc are assumed.
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Acknowledgements:
D. Docenko, dima(at)mpa-garching.mpg.de
(End) Patricia Vannier [CDS] 28-Mar-2008