Access to Astronomical Catalogues

← Click to display the menu
J/A+A/356/1010      Ortho:para-H2 ratio in C and J shocks    (Wilgenbus+, 2000)

The ortho:para-H2 ratio in C- and J- type shock Wilgenbus D., Cabrit S., Pineau des Forets G., Flower D. <Astron. Astrophys. 356, 1010 (2000)> =2000A&A...356.1010W
ADC_Keywords: Atomic physics ; Interstellar medium Keywords: Magnetohydrodynamics (MHD) - molecular processes - shock waves - ISM: individual objects: HH 54 - ISM: molecules - infrared: ISM: lines and bands Description: Tables 2a-f and 4a-f contain an extensive set of parameters derived from our grid of C-type (tables 2a-f) and J-type (tables 4a-f) planar stationary shock models. Models of C-type shocks were calculated for * initial density, nH = 103, 104, 105, 106 cm-3 * shock speed, Vs = 10, 20, 30, 40 km/s (except for nH=106 cm-3, where Vs = 10, 15, 20, 25, 30 km/s) * initial ortho:para-H2 ratio, o/p=0.01, 1, 2, 3 Models of J-type shocks were calculated for * initial density, nH = 103, 104, 105, 106 cm-3 * shock speed, Vs = 5, 10, 15, 20, 25 km/s * initial ortho:para-H2 ratio, o/p=0.01, 1, 2, 3 Tables 2a and 4a list for each model some selected physical parameters (width, duration, temperature, ortho:para ratios ...), tables 2b and 4b contain H2-line fluxes in 0-0 S (0)...S(11), 1-0 S(0)...S(11), and 2-0 S(1) lines, and total H2 luminosity. Tables 2c-f and 4c-f list column densities in each energy level of H2 (each table corresponds to one initial density nH=103, 104, 105 or 106 cm-3). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2a.dat 121 68 C-type shock model selected physical parameters table2b.dat 243 68 C-type shock model H2-line fluxes and luminosity table2c.dat 32 784 C-type shock models column densities (nH=103cm-3) table2d.dat 32 784 C-type shock models column densities (nH=104cm-3) table2e.dat 32 784 C-type shock models column densities (nH=105cm-3) table2f.dat 32 980 C-type shock models column densities (nH=106cm-3) table4a.dat 121 80 J-type shock model selected physical parameters table4b.dat 243 80 J-type shock model H2-line fluxes and luminosity table4c.dat 32 980 J-type shock models column densities (nH=103cm-3) table4d.dat 32 980 J-type shock models column densities (nH=104cm-3) table4e.dat 32 980 J-type shock models column densities (nH=105cm-3) table4f.dat 32 980 J-type shock models column densities (nH=106cm-3)
Byte-by-byte Description of file: table2a.dat table4a.dat
Bytes Format Units Label Explanations
1- 4 F4.2 --- o/p Initial ortho-to-para H2 ratio 6- 11 E6.0 cm-3 nH Initial density, nH=n(H)+2n(H2) 13- 14 I2 km/s Vs Shock velocity 16- 21 F6.1 10-10T B0 Initial magnetic induction (microGauss) 23- 29 E7.1 cm L Shock width (region where Tn>50K) 31- 37 E7.1 yr t Flow time (for the neutrals to cross the width of the shock) 39- 45 E7.1 cm-3 nH(50K) Post-shock density at Tn=50K 50- 53 F4.1 km/s |Vi-Vn|max Maximum ion-neutral drift velocity 59- 65 E7.1 --- (H/nH)max Maximum value of n(H)/nH where nH=n(H)+2n(H2) 68- 72 I5 K Tnmax Maximum temperature of neutrals 75- 79 I5 K TjCAM Mean rotational excitation temperature for levels v=0,J=5...8 (1) 82- 86 I5 K Tjv:1 Mean rotational excitation temperature for levels v=1,J=1...11 (1) 90- 94 F5.2 --- (o/p)max Local ortho:para-H2 ratio at the rear of the shock (where Tn=50K) 98-102 F5.2 --- N(o)/N(p) Ratio of column densities of ortho and para H2, at the rear of the shock 108-112 F5.2 --- (o/p)CAM Mean of empirical o/p ratio for levels v=0,J=5...8 (2) 117-121 F5.2 --- (o/p)v:1 Mean of empirical o/p ratio for levels v=1,J=1...11 (2)
Note (1): Excitation temperature is defined in section 4.1, equ. (6). Note (2): Empirical determination of the observed ortho:para ratio is made using column densities of H2, see section 4.1, equ. (5).
Byte-by-byte Description of file: table2b.dat table4b.dat
Bytes Format Units Label Explanations
1- 4 F4.2 --- o/p Initial ortho-to-para H2 ratio 6- 11 E6.0 cm-3 nH Initial density, nH=n(H)+2n(H2) 13- 14 I2 km/s Vs Shock velocity 16- 21 F6.1 10-10T B0 Initial magnetic induction 23- 29 E7.1 mW/m2 Lmech Initial mechanical energy flux, Lmech=1/2.ρ.Vs3, where ρ=1.4nH.m(H) 31- 34 F4.1 % pH2 Percentage of Lmech radiated in all H2 lines included in the model 36- 39 F4.1 % pCAM Percentage of Lmech radiated in H2 transitions 0-0 S(2)...S(7). 42- 48 E7.1 mW/m2/sr 0-0(0) H2 line flux (1) 50- 56 E7.1 mW/m2/sr 0-0(1) H2 line flux (1) 58- 64 E7.1 mW/m2/sr 0-0(2) H2 line flux (1) 66- 72 E7.1 mW/m2/sr 0-0(3) H2 line flux (1) 74- 80 E7.1 mW/m2/sr 0-0(4) H2 line flux (1) 82- 88 E7.1 mW/m2/sr 0-0(5) H2 line flux (1) 90- 96 E7.1 mW/m2/sr 0-0(6) H2 line flux (1) 98-104 E7.1 mW/m2/sr 0-0(7) H2 line flux (1) 106-112 E7.1 mW/m2/sr 0-0(8) H2 line flux (1) 114-120 E7.1 mW/m2/sr 0-0(9) H2 line flux (1) 122-128 E7.1 mW/m2/sr 0-0(10) H2 line flux (1) 131-137 E7.1 mW/m2/sr 0-0(11) H2 line flux (1) 140-146 E7.1 mW/m2/sr 1-0(0) H2 line flux (1) 148-154 E7.1 mW/m2/sr 1-0(1) H2 line flux (1) 156-162 E7.1 mW/m2/sr 1-0(2) H2 line flux (1) 164-170 E7.1 mW/m2/sr 1-0(3) H2 line flux (1) 172-178 E7.1 mW/m2/sr 1-0(4) H2 line flux (1) 180-186 E7.1 mW/m2/sr 1-0(5) H2 line flux (1) 188-194 E7.1 mW/m2/sr 1-0(6) H2 line flux (1) 196-202 E7.1 mW/m2/sr 1-0(7) H2 line flux (1) 204-210 E7.1 mW/m2/sr 1-0(8) H2 line flux (1) 212-218 E7.1 mW/m2/sr 1-0(9) H2 line flux (1) 220-226 E7.1 mW/m2/sr 1-0(10) H2 line flux (1) 229-235 E7.1 mW/m2/sr 1-0(11) H2 line flux (1) 237-243 E7.1 mW/m2/sr 2-1(1) H2 line flux (1)
Note (1): values < 1.0E-10 are set to 1.0E-99
Byte-by-byte Description of file: table2[cdef].dat table4[cdef].dat
Bytes Format Units Label Explanations
1 I1 --- V Vibrational state of the upper level 3- 4 I2 --- J Rotational state of the upper level 6- 10 I5 K Evj/k Energy of the upper level 12- 15 F4.2 --- o/p Ortho-to-para H2 ratio 17- 22 E6.0 cm-3 nH Initial density, nH=n(H)+2n(H2) 24- 25 I2 km/s Vs Shock velocity 27- 32 F6.1 0.43[cm-2] ln(N(V,J)/g) ln (N(V,J)/g) value (1)
Note (1): ln (N(V,J)/g) = logarithm of the column density in the upper level, normalized by its statistical weight g=(2J+1)(2I+1), with I=0 for J even, and I=1 for J odd.
Acknowledgements: David Wilgenbus
(End) David Wilgenbus [DEMIRM, Obs. Paris], Patricia Bauer [CDS] 24-Feb-2000
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact