J/A+A/545/A120 X-ray bursting neutron star atmos. models. II (Suleimanov+, 2012)
X-ray bursting neutron star atmosphere models: spectra and color corrections.
Suleimanov V., Poutanen J., Werner K.
<Astron. Astrophys. 545, A120 (2012)>
=2012A&A...545A.120S 2012A&A...545A.120S (SIMBAD/NED BibCode)
ADC_Keywords: Models, atmosphere ; Binaries, X-ray
Keywords: radiative transfer - scattering - methods: numerical -
stars: atmospheres - stars: neutron - X-rays: stars
Abstract:
Theoretical spectra of X-ray bursting neutron star (NS) model
atmospheres are widely used for determination of the NS basic
parameters such as their masses and radii. Compton scattering, that
plays an important role in spectra formation at high luminosities, is
often accounted for using the differential Kompaneets operator, while
in other models a more general, integral operator for the Compton
scattering kernel is used. We construct here accurate NS atmosphere
models using exact treatment of Compton scattering with the integral
relativistic kinetic equation and exact relativistic angle-dependent
redistribution function.
Description:
There are 18 sets of models for six chemical composition (pure
hydrogen X=1, pure helium Y=1, and four sets of a solar mix of
hydrogen and helium X=0.7374 with various heavy element abundances
Z=1, 0.3, 0.1, and 0.01Z☉; Z☉=0.0134) and three gravities
with logg=14.0, 14.3, and 14.6 (g in units cm/s2). Each of these 18
sets is also characterized by the Eddington temperature at the
surface, neutron star radius (computed for the assumed mass
=1.4M☉), and the redshift, as detailed in set.dat file.
tabled1.dat, for each of the 18 sets there are 26-28 lines of data
(for various values of l and corresponding effective temperatures)
containing color corrections computed by five different procedures
described in Suleimanov et al. (2011, Cat. J/A+A/527/A139). The
product of dilution factor and fc4 are also given for procedures
1-3. They are computed from the flux spectra presented in tabled2.dat.
tabled3.dat contains the specific intensities at three angles with
cosines equal to 0.113, 0.5 and 0.887.
For each set, 26-28 models are computed for relative luminosities (in
units of Eddnington) l=L/L_Edd = 0.001, 0.003, 0.01, 0.03, 0.05, 0.07,
0.1, 0.15, 0.2, 0.3, 0.4, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85,
0.9, 0.95, 0.98, 1.00, 1.02, 1.04, 1.06, 1.08, 1.10.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
set.dat 49 18 Set parameters
tabled1.dat 68 484 Color and dilution factors
tabled2.dat 382 5400 *Atmosphere model spectra (fluxes)
tabled3.dat 1110 5400 *Atmosphere model spectra (specific intensities)
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Note on tabled2.dat: fluxes for 484 models of neutron star atmospheres.
Note on tabled3.dat: specific intensities for the same models.
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See also:
J/A+A/527/A139 : X-ray bursting neutron star atmosphere models
(Suleimanov+, 2011)
Byte-by-byte Description of file: set.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Set [1/18] Set number
4- 9 F6.4 --- X X abundance (0, 0.7374, 1)
11- 16 F6.4 --- Y Y abundance
(0, 0.2492, 0.2586, 0.2613, 0.2625, 1)
18- 24 E7.2 --- Z Z abundance
(0, 1.34E-2, 4.02E-3, 1.34E-3, 1.34E-4)
26- 29 F4.1 [cm/s2] logg Logarithm of surface gravity
(14.0, 14.3, 14.6)
31- 35 F5.3 keV TEdd Eddington temperature (9 values)
37- 41 F5.2 km R Neutron star radius (8.16, 10.88, 14.80)
43- 46 F4.2 --- z Redshift (0.18, 0.27, 0.42)
48- 49 I2 --- Lum Number of luminosities for a given set
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Byte-by-byte Description of file: tabled1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Set [1/18] Set number
4- 8 F5.3 --- l Relative luminosity L/L_Edd (1)
10- 14 F5.3 --- grad/g Ratio of the radiation acceleration to gravity
16- 20 F5.3 keV Teff Effective temperature
22- 26 F5.3 --- fc1 Color correction factor fc,1 (2)
28- 32 F5.3 --- fc2 Color correction factor fc,2 (2)
34- 38 F5.3 --- fc3 Color correction factor fc,3 (2)
40- 44 F5.3 --- fc4 Color correction factor fc,4 (2)
46- 50 F5.3 --- fc5 Color correction factor fc,5 (2)
52- 56 F5.3 --- w*fc1+4 Product of dilution factor and (fc1)4
58- 62 F5.3 --- w*fc2+4 Product of dilution factor and (fc2)4
64- 68 F5.3 --- w*fc3+4 Product of dilution factor and (fc3)4
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Note (1): Lum values (26-28) of relative luminosity from 0.001 to 1.06-1.10.
Note (2): fc=Tbb/Teff, where Tbb is the fitted color temperature.
fc1 to fc5 correspond to the different procedures to determine fc.
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Byte-by-byte Description of file: tabled2.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Set Set number
9- 18 E10.4 keV E Photon energy
22- 31 E10.4 mW/m2/keV F(0001) Flux FE for l=0.001 (1)
35- 44 E10.4 mW/m2/keV F(0003) Flux FE for l=0.003 (1)
48- 57 E10.4 mW/m2/keV F(0010) Flux FE for l=0.01 (1)
61- 70 E10.4 mW/m2/keV F(0030) Flux FE for l=0.03 (1)
74- 83 E10.4 mW/m2/keV F(0050) Flux FE for l=0.05 (1)
87- 96 E10.4 mW/m2/keV F(0070) Flux FE for l=0.07 (1)
100-109 E10.4 mW/m2/keV F(0100) Flux FE for l=0.1 (1)
113-122 E10.4 mW/m2/keV F(0150) Flux FE for l=0.15 (1)
126-135 E10.4 mW/m2/keV F(0200) Flux FE for l=0.2 (1)
139-148 E10.4 mW/m2/keV F(0300) Flux FE for l=0.3 (1)
152-161 E10.4 mW/m2/keV F(0400) Flux FE for l=0.4 (1)
165-174 E10.4 mW/m2/keV F(0500) Flux FE for l=0.5 (1)
178-187 E10.4 mW/m2/keV F(0550) Flux FE for l=0.55 (1)
191-200 E10.4 mW/m2/keV F(0600) Flux FE for l=0.6 (1)
204-213 E10.4 mW/m2/keV F(0650) Flux FE for l=0.65 (1)
217-226 E10.4 mW/m2/keV F(0700) Flux FE for l=0.7 (1)
230-239 E10.4 mW/m2/keV F(0750) Flux FE for l=0.75 (1)
243-252 E10.4 mW/m2/keV F(0800) Flux FE for l=0.8 (1)
256-265 E10.4 mW/m2/keV F(0850) Flux FE for l=0.85 (1)
269-278 E10.4 mW/m2/keV F(0900) Flux FE for l=0.9 (1)
282-291 E10.4 mW/m2/keV F(0950) Flux FE for l=0.95 (1)
295-304 E10.4 mW/m2/keV F(0980) Flux FE for l=0.98 (1)
308-317 E10.4 mW/m2/keV F(1000) Flux FE for l=1.0 (1)
321-330 E10.4 mW/m2/keV F(1020) Flux FE for l=1.02 (1)
334-343 E10.4 mW/m2/keV F(1040) Flux FE for l=1.04 (1)
347-356 E10.4 mW/m2/keV F(1060) Flux FE for l=1.06 (1)
360-369 E10.4 mW/m2/keV F(1080) ? Flux FE for l=1.08 (1)
373-382 E10.4 mW/m2/keV F(1100) ? Flux FE for l=1.10 (1)
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Note (1): Values of the flux FE in units [erg/cm2/s/keV] such as
∫0infinityFEdE=σSB*(Teff_)4.
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Byte-by-byte Description of file: tabled3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- Set Set number
9- 18 E10.4 keV E Photon energy
22- 31 E10.4 mW/m2/keV/sr I(0001,0.113) IEi at cosi=0.113 for l=0.001 (1)
35- 44 E10.4 mW/m2/keV/sr I(0001,0.5) IEi at cosi=0.5 for l=0.001 (1)
48- 57 E10.4 mW/m2/keV/sr I(0001,0.887) IEi at cosi=0.887 for l=0.001 (1)
61- 70 E10.4 mW/m2/keV/sr I(0003,0.113) IEi at cosi=0.113 for l=0.003 (1)
74- 83 E10.4 mW/m2/keV/sr I(0003,0.5) IEi at cosi=0.5 for l=0.003 (1)
87- 96 E10.4 mW/m2/keV/sr I(0003,0.887) IEi at cosi=0.887 for l=0.003 (1)
100- 109 E10.4 mW/m2/keV/sr I(0010,0.113) IEi at cosi=0.113 for l=0.01 (1)
113- 122 E10.4 mW/m2/keV/sr I(0010,0.5) IEi at cosi=0.5 for l=0.01 (1)
126- 135 E10.4 mW/m2/keV/sr I(0010,0.887) IEi at cosi=0.887 for l=0.01 (1)
139- 148 E10.4 mW/m2/keV/sr I(0030,0.113) IEi at cosi=0.113 for l=0.03 (1)
152- 161 E10.4 mW/m2/keV/sr I(0030,0.5) IEi at cosi=0.5 for l=0.03 (1)
165- 174 E10.4 mW/m2/keV/sr I(0030,0.887) IEi at cosi=0.887 for l=0.03 (1)
178- 187 E10.4 mW/m2/keV/sr I(0050,0.113) IEi at cosi=0.113 for l=0.05 (1)
191- 200 E10.4 mW/m2/keV/sr I(0050,0.5) IEi at cosi=0.5 for l=0.05 (1)
204- 213 E10.4 mW/m2/keV/sr I(0050,0.887) IEi at cosi=0.887 for l=0.05 (1)
217- 226 E10.4 mW/m2/keV/sr I(0070,0.113) IEi at cosi=0.113 for l=0.07 (1)
230- 239 E10.4 mW/m2/keV/sr I(0070,0.5) IEi at cosi=0.5 for l=0.07 (1)
243- 252 E10.4 mW/m2/keV/sr I(0070,0.887) IEi at cosi=0.887 for l=0.07 (1)
256- 265 E10.4 mW/m2/keV/sr I(0100,0.113) IEi at cosi=0.113 for l=0.1 (1)
269- 278 E10.4 mW/m2/keV/sr I(0100,0.5) IEi at cosi=0.5 for l=0.1 (1)
282- 291 E10.4 mW/m2/keV/sr I(0100,0.887) IEi at cosi=0.887 for l=0.1 (1)
295- 304 E10.4 mW/m2/keV/sr I(0150,0.113) IEi at cosi=0.113 for l=0.15 (1)
308- 317 E10.4 mW/m2/keV/sr I(0150,0.5) IEi at cosi=0.5 for l=0.15 (1)
321- 330 E10.4 mW/m2/keV/sr I(0150,0.887) IEi at cosi=0.887 for l=0.15 (1)
334- 343 E10.4 mW/m2/keV/sr I(0200,0.113) IEi at cosi=0.113 for l=0.2 (1)
347- 356 E10.4 mW/m2/keV/sr I(0200,0.5) IEi at cosi=0.5 for l=0.2 (1)
360- 369 E10.4 mW/m2/keV/sr I(0200,0.887) IEi at cosi=0.887 for l=0.2 (1)
373- 382 E10.4 mW/m2/keV/sr I(0300,0.113) IEi at cosi=0.113 for l=0.3 (1)
386- 395 E10.4 mW/m2/keV/sr I(0300,0.5) IEi at cosi=0.5 for l=0.3 (1)
399- 408 E10.4 mW/m2/keV/sr I(0300,0.887) IEi at cosi=0.887 for l=0.3 (1)
412- 421 E10.4 mW/m2/keV/sr I(0400,0.113) IEi at cosi=0.113 for l=0.4 (1)
425- 434 E10.4 mW/m2/keV/sr I(0400,0.5) IEi at cosi=0.5 for l=0.4 (1)
438- 447 E10.4 mW/m2/keV/sr I(0400,0.887) IEi at cosi=0.887 for l=0.4 (1)
451- 460 E10.4 mW/m2/keV/sr I(0500,0.113) IEi at cosi=0.113 for l=0.5 (1)
464- 473 E10.4 mW/m2/keV/sr I(0500,0.5) IEi at cosi=0.5 for l=0.5 (1)
477- 486 E10.4 mW/m2/keV/sr I(0500,0.887) IEi at cosi=0.887 for l=0.5 (1)
490- 499 E10.4 mW/m2/keV/sr I(0550,0.113) IEi at cosi=0.113 for l=0.55 (1)
503- 512 E10.4 mW/m2/keV/sr I(0550,0.5) IEi at cosi=0.5 for l=0.55 (1)
516- 525 E10.4 mW/m2/keV/sr I(0550,0.887) IEi at cosi=0.887 for l=0.55 (1)
529- 538 E10.4 mW/m2/keV/sr I(0600,0.113) IEi at cosi=0.113 for l=0.6 (1)
542- 551 E10.4 mW/m2/keV/sr I(0600,0.5) IEi at cosi=0.5 for l=0.6 (1)
555- 564 E10.4 mW/m2/keV/sr I(0600,0.887) IEi at cosi=0.887 for l=0.6 (1)
568- 577 E10.4 mW/m2/keV/sr I(0650,0.113) IEi at cosi=0.113 for l=0.65 (1)
581- 590 E10.4 mW/m2/keV/sr I(0650,0.5) IEi at cosi=0.5 for l=0.65 (1)
594- 603 E10.4 mW/m2/keV/sr I(0650,0.887) IEi at cosi=0.887 for l=0.65 (1)
607- 616 E10.4 mW/m2/keV/sr I(0700,0.113) IEi at cosi=0.113 for l=0.7 (1)
620- 629 E10.4 mW/m2/keV/sr I(0700,0.5) IEi at cosi=0.5 for l=0.7 (1)
633- 642 E10.4 mW/m2/keV/sr I(0700,0.887) IEi at cosi=0.887 for l=0.7 (1)
646- 655 E10.4 mW/m2/keV/sr I(0750,0.113) IEi at cosi=0.113 for l=0.75 (1)
659- 668 E10.4 mW/m2/keV/sr I(0750,0.5) IEi at cosi=0.5 for l=0.75 (1)
672- 681 E10.4 mW/m2/keV/sr I(0750,0.887) IEi at cosi=0.887 for l=0.75 (1)
685- 694 E10.4 mW/m2/keV/sr I(0800,0.113) IEi at cosi=0.113 for l=0.8 (1)
698- 707 E10.4 mW/m2/keV/sr I(0800,0.5) IEi at cosi=0.5 for l=0.8 (1)
711- 720 E10.4 mW/m2/keV/sr I(0800,0.887) IEi at cosi=0.887 for l=0.8 (1)
724- 733 E10.4 mW/m2/keV/sr I(0850,0.113) IEi at cosi=0.113 for l=0.85 (1)
737- 746 E10.4 mW/m2/keV/sr I(0850,0.5) IEi at cosi=0.5 for l=0.85 (1)
750- 759 E10.4 mW/m2/keV/sr I(0850,0.887) IEi at cosi=0.887 for l=0.85 (1)
763- 772 E10.4 mW/m2/keV/sr I(0900,0.113) IEi at cosi=0.113 for l=0.9 (1)
776- 785 E10.4 mW/m2/keV/sr I(0900,0.5) IEi at cosi=0.5 for l=0.9 (1)
789- 798 E10.4 mW/m2/keV/sr I(0900,0.887) IEi at cosi=0.887 for l=0.9 (1)
802- 811 E10.4 mW/m2/keV/sr I(0950,0.113) IEi at cosi=0.113 for l=0.95 (1)
815- 824 E10.4 mW/m2/keV/sr I(0950,0.5) IEi at cosi=0.5 for l=0.95 (1)
828- 837 E10.4 mW/m2/keV/sr I(0950,0.887) IEi at cosi=0.887 for l=0.95 (1)
841- 850 E10.4 mW/m2/keV/sr I(0980,0.113) IEi at cosi=0.113 for l=0.98 (1)
854- 863 E10.4 mW/m2/keV/sr I(0980,0.5) IEi at cosi=0.5 for l=0.98 (1)
867- 876 E10.4 mW/m2/keV/sr I(0980,0.887) IEi at cosi=0.887 for l=0.98 (1)
880- 889 E10.4 mW/m2/keV/sr I(1000,0.113) IEi at cosi=0.113 for l=1.0 (1)
893- 902 E10.4 mW/m2/keV/sr I(1000,0.5) IEi at cosi=0.5 for l=1.0 (1)
906- 915 E10.4 mW/m2/keV/sr I(1000,0.887) IEi at cosi=0.887 for l=1.0 (1)
919- 928 E10.4 mW/m2/keV/sr I(1020,0.113) IEi at cosi=0.113 for l=1.02 (1)
932- 941 E10.4 mW/m2/keV/sr I(1020,0.5) IEi at cosi=0.5 for l=1.02 (1)
945- 954 E10.4 mW/m2/keV/sr I(1020,0.887) IEi at cosi=0.887 for l=1.02 (1)
958- 967 E10.4 mW/m2/keV/sr I(1040,0.113) IEi at cosi=0.113 for l=1.04 (1)
971- 980 E10.4 mW/m2/keV/sr I(1040,0.5) IEi at cosi=0.5 for l=1.04 (1)
984- 993 E10.4 mW/m2/keV/sr I(1040,0.887) IEi at cosi=0.887 for l=1.04 (1)
997-1006 E10.4 mW/m2/keV/sr I(1060,0.113) IEi at cosi=0.113 for l=1.06 (1)
1010-1019 E10.4 mW/m2/keV/sr I(1060,0.5) IEi at cosi=0.5 for l=1.06 (1)
1023-1032 E10.4 mW/m2/keV/sr I(1060,0.887) IEi at cosi=0.887 for l=1.06 (1)
1036-1045 E10.4 mW/m2/keV/sr I(1080,0.113) ? IEi at cosi=0.113 for l=1.08 (1)
1049-1058 E10.4 mW/m2/keV/sr I(1080,0.5) ? IEi at cosi=0.5 for l=1.08 (1)
1062-1071 E10.4 mW/m2/keV/sr I(1080,0.887) ? IEi at cosi=0.887 for l=1.08 (1)
1075-1084 E10.4 mW/m2/keV/sr I(1100,0.113) ? IEi at cosi=0.113 for l=1.1 (1)
1088-1097 E10.4 mW/m2/keV/sr I(1100,0.5) ? IEi at cosi=0.5 for l=1.1 (1)
1101-1110 E10.4 mW/m2/keV/sr I(1100,0.887) ? IEi at cosi=0.887 for l=1.1 (1)
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Note (1): Values of the specific intensity IEi in units [erg/cm2/s/keV/sr ]
such as
2*pi*∫0infinitydE∫01IEi dcosi=σSB*(Teff)4.
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Acknowledgements:
J. Poutanen, juri.poutanen(at)oulu.fi, University of Oulu
V. Suleimanov, valery.suleimanov(at)uni-tuebingen.de, University of Tubingen
(End) V. Suleimanov [Tubingen], J. Poutanen [Oulu], P. Vannier [CDS] 11-Aug-2012