J/A+AS/114/363 Polarization profiles of H lines (Casini 1995)
Coefficients for calculating the second-order moments of the polarization
profiles of hydrogen lines
Casini R.
<Astron. Astrophys. Suppl. Ser. 114, 363 (1995)>
=1995A&AS..114..363C 1995A&AS..114..363C (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; Polarization
Keywords: polarization - line: formation - atomic processes - atomic data
Description:
In this paper we provide extensive tables of the coefficients that are
needed in the calculation of the second-order moments of the
polarization profiles of hydrogen lines. We cover all the transitions
up to the level n=50, which is enough for many astrophysical
applications. We also provide formulae which allow the calculation of
the line and oscillator strengths and of the Einstein coefficients for
the tabulated transitions.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table 114 1225 Coefficients needed in the calculation of
the second-order moments of the Stokes profiles
of optically-thin, emission hydrogen lines +
other related coefficients
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Byte-by-byte Description of file: table
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Bytes Format Units Label Explanations
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2- 3 I2 --- n First principal quantum number
5- 6 I2 --- m Second principal quantum number
8- 25 E18.12 Ry+2 Omk2(0) Fine-structure contribution to the
second-order moment of the intensity
profile (1)
28- 46 F19.11 --- A0(n.m) First electric coefficient (2)
53- 71 F19.11 --- A2(n.m) Second electric coefficient (3)
77- 94 E18.12 Ry Om Center-of-gravity frequency of the
intensity profile in the absence of
external fields (4)
96-113 E18.12 --- Sum Sum of the strengths of the line-components
(in units of a0^2, where a0 is the radius
of Bohr's first orbit) (5)
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Note (1): Defined in Casini et al. 1995, Eqs. (9) and (10)
Note (2): Defined in Casini et al. 1995, Eq. (14); see also Casini 1995, Eq. (4)
Note (3): Defined in Casini et al. 1995, Eq. (14)
Note (4): Defined in Casini et al. 1995, Eqs. (12) and (10)
Note (5): Defined in Casini 1995, Eq. (2);
a0=h2/(4π2me e2)=0.5291775x10-10m
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References:
Casini R., Landi Degl'Innocenti E., 1994, "Properties of the second-order
moments of the polarization profiles of hydrogen lines",
=1995A&A...300..309C 1995A&A...300..309C
Casini R., 1995, "Coefficients for calculating the second-order moments
of the polarization profiles of hydrogen lines" (this paper)
(End) Simona Mei [CDS] 12-Jul-1995