J/A+A/557/A137 Dust effects on photometric parameters in spirals (Pastrav+ 2013)
The effects of dust on the derived photometric parameters of decomposed disks
and bulges.
Pastrav B.A., Popescu C.C., Tuffs R.J., Sansom A.E.
<Astron. Astrophys. 557, A137 (2013)>
=2013A&A...557A.137P 2013A&A...557A.137P
ADC_Keywords: Galaxies, photometry ; Morphology
Keywords: galaxies: spiral - galaxies: photometry - galaxies: bulges -
galaxies: structure - dust, extinction - radiative transfer
Abstract:
We present results of a study to quantify the effects of dust on the
derived photometric parameters of disk and bulges obtained from bulge-disk
decomposition: scale-length, effective radius, Sersic index, disk
axis-ratio, and bulge-to-disk ratio. The dust induced changes in these
parameters were obtained by fitting simulated images of composite systems
(containing a disk and a bulge) produced using radiative transfer
calculations.
The simulations were fitted with the GALFIT 3.0.2 data analysis algorithm.
Fits were done with both a combination of an exponential plus a variable-
index Sersic function as well as with a combination of two variable-index
Sersic functions.
Description:
The tables from appendix A (tablea*) list the corrections for
projection effects on bulge- disk decomposition, the tables from
appendix B (tableb*) list the corrections for the effects of dust on
bulge-to-disk decomposition, while the tables from appendix C
(tablec*) list the corrections for the effects of dust on single
Sersic fits of galaxies containing a disk and a bulge. The corrections
in Table A and B are given for the scalelength/effective radius,
Sersic index and bulge-to disk ratio of disks and bulges. The
corrections in table C are given for the effective radius of composite
systems. The corrections are given as a function of inclination,
central face-on optical depth in the B band taufB, and wavelength.
The parameter space covered by this is as follows:
taufB={0.1,0.3,0.5,1.0,2.0,4.0,8.0}
wavelength (in Angstrom): 4430,5640,8090,12590,22000.
The corrections are provided for photometric fits done with the following
functions:
i) exponential+Sersic functions for disk and bulge
ii) variable index Sersic functions for both the disk and the bulge
iii) single Sersic fits
The corrections are provided for systems with exponential bulges (i.e.
Sersic index fixed to unity) and de Vaucouleurs bulges.
The corrections can be used together with the ones given in Pastrav et al.
(2013, Cat. J/A+A/553/A80), using Eqs. 10 and 11 from Pastrav et al. (2013,
Cat. J/A+A/553/A80).
The photometric parameters for which corrections are listed are as follows:
R - the exponential scalelength
Reff - the effective radius
nsers - the Sersic index
B/D - bulge-to-disk ratio of the composite system
To facilitate access to the information and to allow the corrections to be
calculated for any inclination, the corrections are presented in the form
of polynomial function fits. For all cases the fitted function is
given by Eq. 16 of the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(B, B/D=0.25)
tablea2.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(V, B/D=0.25)
tablea3.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(I, B/D=0.25)
tablea4.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(J, B/D=0.25)
tablea5.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(K, B/D=0.25)
tablea6.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(B, B/D=0.50)
tablea7.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(V, B/D=0.50)
tablea8.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(I, B/D=0.50)
tablea9.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(J, B/D=0.50)
tablea10.dat 33 6 Proj. eff. exp+Sersic fits, exp bulge(K, B/D=0.50)
tablea11.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(B, B/D=0.25)
tablea12.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(V, B/D=0.25)
tablea13.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(I, B/D=0.25)
tablea14.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(J, B/D=0.25)
tablea15.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(K, B/D=0.25)
tablea16.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(B, B/D=0.50)
tablea17.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(V, B/D=0.50)
tablea18.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(I, B/D=0.50)
tablea19.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(J, B/D=0.50)
tablea20.dat 33 6 Proj. eff. exp+Sersic fits, deV bulge(K, B/D=0.50)
tablea21.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(B, B/D=0.25)
tablea22.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(V, B/D=0.25)
tablea23.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(I, B/D=0.25)
tablea24.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(J, B/D=0.25)
tablea25.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(K, B/D=0.25)
tablea26.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(B, B/D=0.50)
tablea27.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(V, B/D=0.50)
tablea28.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(I, B/D=0.50)
tablea29.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(J, B/D=0.50)
tablea30.dat 39 6 Proj. eff. -Sersic+Sersic fits, exp bulge(K, B/D=0.50)
tableb1.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (B, B/D=0.25)
tableb2.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (V, B/D=0.25)
tableb3.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (I, B/D=0.25)
tableb4.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (J, B/D=0.25)
tableb5.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (K, B/D=0.25)
tableb6.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (B, B/D=0.50)
tableb7.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (V, B/D=0.50)
tableb8.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (I, B/D=0.50)
tableb9.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (J, B/D=0.50)
tableb10.dat 46 42 Dust effects -exp+Sersic fits, exp bulge (K, B/D=0.50)
tableb11.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (B, B/D=0.25)
tableb12.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (V, B/D=0.25)
tableb13.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (I, B/D=0.25)
tableb14.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (J, B/D=0.25)
tableb15.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (K, B/D=0.25)
tableb16.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (B, B/D=0.50)
tableb17.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (V, B/D=0.50)
tableb18.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (I, B/D=0.50)
tableb19.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (J, B/D=0.50)
tableb20.dat 46 42 Dust effects -exp+Sersic fits, deV bulge (K, B/D=0.50)
tableb21.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(B, B/D=0.25)
tableb22.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(V, B/D=0.25)
tableb23.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(I, B/D=0.25)
tableb24.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(J, B/D=0.25)
tableb25.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(K, B/D=0.25)
tableb26.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(B, B/D=0.50)
tableb27.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(V, B/D=0.50)
tableb28.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(I, B/D=0.50)
tableb29.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(J, B/D=0.50)
tableb30.dat 54 42 Dust effects-Sersic+Sersic fits,exp bulge(K, B/D=0.50)
tablec1.dat 20 42 Dust effects(exp bulge)-single Sersic fits(B,B/D=0.25)
tablec2.dat 20 42 Dust effects(exp bulge)-single Sersic fits(V,B/D=0.25)
tablec3.dat 20 42 Dust effects(exp bulge)-single Sersic fits(I,B/D=0.25)
tablec4.dat 20 42 Dust effects(exp bulge)-single Sersic fits(J,B/D=0.25)
tablec5.dat 20 42 Dust effects(exp bulge)-single Sersic fits(K,B/D=0.25)
tablec6.dat 20 42 Dust effects(exp bulge)-single Sersic fits(B,B/D=0.50)
tablec7.dat 20 42 Dust effects(exp bulge)-single Sersic fits(V,B/D=0.50)
tablec8.dat 20 42 Dust effects(exp bulge)-single Sersic fits(I,B/D=0.50)
tablec9.dat 20 42 Dust effects(exp bulge)-single Sersic fits(J,B/D=0.50)
tablec10.dat 20 42 Dust effects(exp bulge)-single Sersic fits(K,B/D=0.50)
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See also:
J/A+A/527/A109 : Dust and PAH emission SEDs of disk galaxies (Popescu+, 2011)
J/A+A/553/A80 : Dust effects on photometric param. in spirals (Pastrav+, 2013)
Byte-by-byte Description of file: tablea?.dat tablea1?.dat tablea20.dat
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Bytes Format Units Label Explanations
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1 A1 --- Band [BVIJK ] Band name
3- 4 A2 --- Coeff Name of the coefficient (a0-a5) (G1)
6- 12 F7.3 --- RiBD/R0d Corrections for projection effects for the
scalelength of the decomposed disk
14- 19 F6.3 --- RiBD/R0b Corrections for projection effects for the
effective radius of the decomposed bulge
21- 26 F6.3 --- niB-nib Corrections for projection effects for the
Sersic index of the decomposed bulge
28- 33 F6.3 --- delta(BDi) Corrections for projection effects for the
bulge-to-disk ratio of the composite system
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Byte-by-byte Description of file: tablea2[123456789].dat tablea30.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Band [BVIJK ] Band name
3- 4 A2 --- Coeff Name of the coefficient (a0-a5) (G1)
6- 11 F6.3 --- RiBD/Rid Corrections for projection effects for the
scalelength of the decomposed disk
13- 18 F6.3 --- RiBD/Rib Corrections for projection effects for the
effective radius of the decomposed bulge
20- 25 F6.3 --- niB-nib Corrections for projection effects for the
Sersic index of the decomposed disk
27- 32 F6.3 --- niBD-nid Corrections for projection effects for the
Sersic index of the decomposed bulge
34- 39 F6.3 --- delta(BDi) Corrections for projection effects for the
bulge-to-disk ratio of the composite system
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Byte-by-byte Description of file: tableb?.dat tableb1?.dat tableb20.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Band [BVIJK ] Band name
3- 6 A4 --- --- [tau=]
7- 9 F3.1 --- tau [0/9] Central face-on optical depth in B band
11- 12 A2 --- Coeff Name of the coefficients (a0-a5) (G1)
14- 20 F7.3 --- RBD/Rappd Corrections for dust effects for the
scalelength of the decomposed disk
22- 29 F8.3 --- RBD/Rappb Corrections for dust effects for the
effective radius of the decomposed bulge
31- 38 F8.3 --- nBD-napp Corrections for dust effects for the Sersic
index of the decomposed bulge
40- 46 F7.3 --- delta(BD) Corrections for dust effects for the
bulge-to-disk ratio of the composite system
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Byte-by-byte Description of file: tableb2[123456789].dat tableb30.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Band [BVIJK ] Band name
3- 6 A4 --- --- [tau=]
7- 9 F3.1 --- tau [0/9] Central face-on optical depth in B band
11- 12 A2 --- Coeff Name of the coefficients (a0-a5) (G1)
14- 20 F7.3 --- RBD/Rappd Corrections for dust effects for the
scalelength of the decomposed disk
22- 29 F8.3 --- RBD/Rappb Corrections for dust effects for the
effective radius of the decomposed bulge
31- 38 F8.3 --- nBD-nappd Corrections for dust effects for the Sersic
index of the decomposed disk
40- 46 F7.3 --- nBD-nappb Corrections for dust effects for the Sersic
index of the decomposed bulge
48- 54 F7.3 --- delta(BD) Corrections for dust effects for the
bulge-to-disk ratio of the composite system
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Byte-by-byte Description of file: tablec*.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Band [BVIJK ] Band name
3- 6 A4 --- --- [tau=]
7- 9 F3.1 --- tau [0/9] Central face-on optical depth in B band
11- 12 A2 --- Coeff Name of the coefficients (a0-a5) (G1)
14- 20 F7.3 --- Rgal/app Corrections for dust effects on the effective
radius of the composite system
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Global Notes:
Note (G1): the corrections are given in terms of polynomial fits of the
form: corr(x) = a0 +a1.x + a2.x2 + a3.x3 + a4.x4 + a5.x5
Acknowledgements:
Bogdan Adrian Pastrav, bapastrav(at)uclan.ac.uk
(End) Bogdan A. Pastrav [JHI], Patricia Vannier [CDS] 14-Aug-2013