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. =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: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- 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=h^2^/(4{pi}^2^m_e_ e^2^)=0.5291775x10^-10^m -------------------------------------------------------------------------------- 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 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