J/ApJ/808/174 FeII radiative transition rates (Bautista+, 2015) ================================================================================ Atomic data and spectral model for Fe II. Bautista M.A., Fivet V., Ballance C., Quinet P., Ferland G., Mendoza C., Kallman T.R. =2015ApJ...808..174B (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Atomic physics Keywords: atomic data; atomic processes; ISM: abundances; line: formation; stars: massive; stars: variables: T Tauri, Herbig Ae/Be Abstract: We present extensive calculations of radiative transition rates and electron impact collision strengths for FeII. The data sets involve 52 levels from the 3d^7^, 3d^6^4s, and 3d^5^4s^2^ configurations. Computations of A-values are carried out with a combination of state-of-the-art multiconfiguration approaches, namely the relativistic Hartree-Fock, Thomas-Fermi-Dirac potential, and Dirac-Fock methods, while the R-matrix plus intermediate coupling frame transformation, Breit-Pauli R-matrix, and Dirac R-matrix packages are used to obtain collision strengths. We examine the advantages and shortcomings of each of these methods, and estimate rate uncertainties from the resulting data dispersion. We proceed to construct excitation balance spectral models, and compare the predictions from each data set with observed spectra from various astronomical objects. We are thus able to establish benchmarks in the spectral modeling of [FeII] emission in the IR and optical regions as well as in the UV FeII absorption spectra. Finally, we provide diagnostic line ratios and line emissivities for emission spectroscopy as well as column densities for absorption spectroscopy. Description: One hundred thirty-seven [FeII] lines are found in the Hubble Space Telescope (HST)/STIS archived spectra of the Weigelt blobs of {eta} Carinae. 55 [FeII] lines have been measured in the X-shooter (3000-25000{AA}) spectrum of the jet of the pre-main-sequence star SEO-H{alpha} 574 (Giannini et al. 2013ApJ...778...71G). See sections 3 and 5. Objects: ----------------------------------------------------------- RA (ICRS) DE Designation(s) ----------------------------------------------------------- 10 45 03.55 -59 41 04.0 eta Carinae = * eta Car 11 16 02.88 -76 24 53.3 ESO-H{alpha} 574 = ESO-HA 574 ----------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table3.dat 38 52 Energy Levels of the 3d^6^4s, 3d^7^, and 3d^5^4s^2^ configurations table10.dat 33 473 Fe II line branching ratios table11.dat 60 106 *Intensity ratios from lines from the same upper level in {eta} Carinea table12.dat 62 1953 Maxwellian averaged collision strengths for FeII vs temperature -------------------------------------------------------------------------------- Note on table11.dat: Comparison between calculated and observed ratios in the Weigelt blobs of {eta} Carinea and the ESO-H{alpha}574. -------------------------------------------------------------------------------- See also: J/A+A/554/A132 : Iron line list (FeI and FeII) (Genovali+, 2013) J/A+A/536/A74 : FeII forbidden lines radiative transition rates (Deb+, 2011) J/A+A/520/A57 : New FeII energy levels from stellar spectra (Castelli+, 2010) J/ApJ/709/611 : The multi-component absorber QSO 0318-0600 (Dunn+, 2010) J/A+A/508/1527 : SiII Radiative transition rates (Bautista+, 2009) J/MNRAS/395/855 : Spectroscopy (310-1040nm) of HH 202 (Mesa-Delgado+, 2009) J/A+A/475/765 : Fine structure forbidden lines in FeII (Ramsbottom+, 2007) J/A+AS/120/361 : IRON Project. XIX. Fe II radiative transitions (Quinet+ 1996) J/A+A/293/953 : IRON project VI. FeII collision strengths (Zhang+, 1995) http://etacar.umn.edu/ : HST Treasury program on eta Carinae Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Seq [1/52] Index number 4- 17 A14 --- Conf Configuration 19- 28 A10 --- Lev Level 30- 38 F9.7 --- E [0/0.3] Energy (1) -------------------------------------------------------------------------------- Note (1): From Ralchenko Y., Kramida A., Reader J. and NIST ASD Team 2011 NIST Atomic Spectra Database (version 4.1): http://www.nist.gov/pml/data/asd.cfm -------------------------------------------------------------------------------- Byte-by-byte Description of file: table10.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Up [2/52] Upper level designation 4- 5 I2 --- Low [1/47] Lower level designation 7- 15 F9.2 0.1nm lambda [3175.3/873582.2] Line wavelength; Angstroms 17- 24 E8.3 --- BR Branching ratio 26- 33 E8.3 --- e_BR [0/0.3] Uncertainty in BR -------------------------------------------------------------------------------- Byte-by-byte Description of file: table11.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Up [10/51] Upper level 1 designation 4- 5 I2 --- Low1 [1/14] Lower level numerator designation 7- 8 I2 --- Low2 [2/16] Lower level denominator designation 10- 16 F7.1 0.1nm lambda1 [3277.8/17971] Numerator wavelength 18- 24 F7.1 0.1nm lambda2 [4080.4/18094] Denominator wavelength 26- 33 E8.2 --- Obs [0.6/116] Observed ratio 35- 42 E8.2 % e_Obs [0.01/70.5] Uncertainty in Obs 44- 51 E8.2 --- Th [0.009/72] Theoretical ratio 53- 60 E8.2 % e_Th [0.0003/8.5] Uncertainty in Th -------------------------------------------------------------------------------- Byte-by-byte Description of file: table12.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Low [1/62] Lower level designation (1) 4- 5 I2 --- Up [2/63] Upper level designation (1) 7- 15 E9.3 --- CS5 [0/10.5] Effective collision strength at 5000K 17- 25 E9.3 --- CS7 [0/10.2] Effective collision strength at 7000K 27- 35 E9.3 --- CS10 [0/9.8] Effective collision strength at 10000K 37- 45 E9.3 --- CS15 [0/9.3] Effective collision strength at 15000K 47- 55 E9.3 --- CS20 [0/8.8] Effective collision strength at 20000K 57- 62 F6.2 % e_CS10 [3.4/256] Uncertainty in CS10 -------------------------------------------------------------------------------- Note (1): According to author, levels 53-62 should be disregarded due to a lower level of confidence in the calculation (note added by CDS). -------------------------------------------------------------------------------- Acknowledgements: Manuel Bautista [Western Michigan University] History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Emmanuelle Perret [CDS] 02-Dec-2015