J/ApJS/230/8 Compilation of atomic data for key heavy elements (Cashman+, 2017)
Atomic data revisions for transitions relevant to observations of interstellar,
circumgalactic, and intergalactic matter.
Cashman F.H., Kulkarni V.P., Kisielius R., Ferland G.J., Bogdanovich P.
<Astrophys. J. Suppl. Ser., 230, 8-8 (2017)>
=2017ApJS..230....8C 2017ApJS..230....8C (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; References
Keywords: atomic data; atomic processes; ISM: abundances; galaxies: abundances;
quasars: absorption lines
Abstract:
Measurements of element abundances in galaxies from astrophysical
spectroscopy depend sensitively on the atomic data used. With the goal
of making the latest atomic data accessible to the community, we
present a compilation of selected atomic data for resonant absorption
lines at wavelengths longward of 911.753Å (the HI Lyman limit), for
key heavy elements (heavier than atomic number 5) of astrophysical
interest. In particular, we focus on the transitions of those ions
that have been observed in the Milky Way interstellar medium (ISM),
the circumgalactic medium (CGM) of the Milky Way and/or other
galaxies, and the intergalactic medium (IGM). We provide wavelengths,
oscillator strengths, associated accuracy grades, and references to
the oscillator strength determinations. We also attempt to compare and
assess the recent oscillator strength determinations. For about 22% of
the lines that have updated oscillator strength values, the
differences between the former values and the updated ones are
≳0.1dex. Our compilation will be a useful resource for absorption
line studies of the ISM, as well as studies of the CGM and IGM traced
by sight lines to quasars and gamma-ray bursts. Studies (including
those enabled by future generations of extremely large telescopes) of
absorption by galaxies against the light of background galaxies will
also benefit from our compilation.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 130 575 Line identifications, observed wavelengths,
Ritz wavelengths, absorption oscillator strengths
and their accuracy grade for key transitions
refs.dat 195 84 References of oscillator strength (table 2)
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See also:
J/A+AS/108/287 : Atomic data (Verner+, 1994)
J/A+AS/130/541 : Co II oscillator strengths (Raassen+ 1998)
J/A+A/377/361 : Fe II transition probabilities and loggf (Pickering+, 2001)
J/A+A/388/704 : Al I & Al II absolute transition proba. (Vujnovic+, 2002)
J/ApJ/667/1267 : CrI transition probabilities (Sobeck+, 2007)
J/A+A/508/1527 : SiII Radiative transition rates (Bautista+, 2009)
J/ApJ/700/1299 : Gas-phase element depletions in the ISM (Jenkins, 2009)
J/ApJS/188/32 : Breit-Pauli transition probabilities for SII (Tayal+, 2010)
J/ApJS/194/35 : Atomic transition probabilities of Mn (Den Hartog+, 2011)
J/ApJ/770/138 : Metallicities of Lyman limit systems and DLA (Lehner+, 2013)
J/ApJ/780/76 : SII energy levels & transition line strengths
(Kisielius+, 2014)
J/ApJS/211/20 : NiI transition probability measurements (Wood+, 2014)
J/ApJ/804/76 : ZnII lines and collision strengths (Kisielius+, 2015)
J/ApJS/220/13 : Co I transition probabilities (Lawler+, 2015)
J/A+A/587/A107 : Transitions between Ni II bound states (Cassidy+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Z [6/82] Atomic number
4- 9 A6 --- Ion Ion
11- 38 A28 --- loLevel Lower LSJ level
40- 77 A38 --- upLevel Upper LSJ level
79- 89 F11.6 0.1nm lamVac [912.7/7701.1]? Observed vacuum wavelength
in Angstroms
91- 98 F8.3 0.1nm lamRitz [906.8/7701.1] Ritz wavelength in Angstroms
100-101 I2 --- glow [1/10] Statistical weight of lower level
103-104 I2 --- gupp [2/12] Statistical weight of upper level
106-113 E8.2 --- f [0.0009/1.9] Oscillator strength
115-120 F6.3 [-] log(gf) [-3.1/0.8] Log weighted oscillator strength
122-124 A3 --- Grade Accuracy grade of oscillator strength (1)
126-130 A5 --- Ref Source of oscillator strength
(see refs.dat file)
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Note (1): An estimated accuracy is listed for each oscillator strength
where available, indicated by a code letter as follows:
AAA = less than or equal to 0.3% (2 occurrences);
AA = less than or equal to 1% (10 occurrences);
A+ = less than or equal to 2% (11 occurrences);
A = less than or equal to 3% (31 occurrences);
B+ = less than or equal to 7% (89 occurrences);
B = less than or equal to 10% (80 occurrences);
C+ = less than or equal to 18% (73 occurrences);
C = less than or equal to 25% (75 occurrences);
D+ = less than or equal to 40% (33 occurrences);
D = less than or equal to 50% (25 occurrences);
E = greater than 50% (7 occurrences).
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Ref Reference code
7- 25 A19 --- Bibcode Bibcode of the reference
27- 60 A34 --- Auth First author's name(s) and year
62-158 A97 --- Ion Ion
160-195 A36 --- Comm Reference comment
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 29-Jun-2017