J/ApJS/182/80 Rare earth abundances (Sneden+, 2009)
New rare earth element abundance distributions for the Sun and five
r-process-rich very metal-poor stars.
Sneden C., Lawler J.E., Cowan J.J., Ivans I.I., Den Hartog E.A.
<Astrophys. J. Suppl. Ser., 182, 80-96 (2009)>
=2009ApJS..182...80S 2009ApJS..182...80S
ADC_Keywords: Atomic physics ; Stars, population II ; Abundances ; Sun ;
Spectroscopy
Keywords: atomic data - stars: abundances - stars: individual (CS 22829-052,
CS 31082-001, HD 115444, HD 221170, BD+17 3248) - Sun: abundances
stars: Population II
Abstract:
We have derived new abundances of the rare earth elements Pr, Dy, Tm,
Yb, and Lu for the solar photosphere and for five very metal-poor,
neutron-capture r-process-rich giant stars. The photospheric values
for all five elements are in good agreement with meteoritic
abundances. For the low-metallicity sample, these abundances have been
combined with new Ce abundances from a companion paper, and
reconsideration of a few other elements in individual stars, to
produce internally consistent Ba, rare earth, and Hf(56≤Z≤72)
element distributions. These have been used in a critical comparison
between stellar and solar r-process abundance mixes.
Description:
For most of our stars, we analyzed the same high-resolution spectra
that have been used in previous papers of this series (Lawler et al.
(2001ApJ...556..452L 2001ApJ...556..452L), Lawler et al. (2001ApJS..137..341L 2001ApJS..137..341L), Lawler et
al. (2001ApJ...563.1075L 2001ApJ...563.1075L), Den Hartog et al. (2003ApJS..148..543D 2003ApJS..148..543D),
Lawler et al. (2004ApJ...604..850L 2004ApJ...604..850L), Den Hartog et al.
(2005ApJ...619..639D 2005ApJ...619..639D), Lawler et al. (2006, Cat. J/ApJS/162/227),
Den Hartog et al. (2006, Cat. J/ApJS/167/292), Lawler et al. (2007,
Cat. J/ApJS/169/120), Sobeck et al. (2007ApJ...667.1267S 2007ApJ...667.1267S), Lawler et
al. (2008ApJS..178...71L 2008ApJS..178...71L), and Lawler et al. (2009, Cat.
J/ApJS/182/51).
Objects:
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RA (2000) DE Designation(s)
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17 28 14.5 +17 30 36 BD+17 3248 = HIP 85487
22 17 01.7 -16 39 27 CS 22892-052 = BPS CS 22892-052
01 29 31.1 -16 00 45 CS 31082-001 = BPS CS 31082-001
13 16 42.5 +36 22 53 HD 115444 = HIP 64786
23 29 28.8 +30 25 58 HD 221170 = NSV 14589
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File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 52 16 Solar rare Earth abundances
table45.dat 40 80 r-process-rich stars rare Earth abundances
(Table 4 and 5 of the paper)
table10.dat 35 115 Measured hfs A-constants for PrII (Z=59) levels of
interest in this investigation
table11.dat 56 936 Hyperfine structure line component patterns for
PrII (Z=59)
table12.dat 60 26 Isotopic and hyperfine structure line component
patterns for YbII (Z=70)
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See also:
J/ApJS/182/51 : CeII transition probabilities and abundances (Lawler+, 2009)
J/ApJS/169/120 : Transition probabilities for HfII and Hf (Lawler+, 2007)
J/ApJS/162/227 : Transition probabilities for SmII (Lawler+, 2006)
J/ApJS/167/292 : Gd II laboratory transition probabilities (Den Hartog+, 2006)
J/ApJ/645/613 : Abundances of HD 221170 (Ivans+, 2006)
J/A+A/430/255 : Abundances of HD221170 (Yushchenko+, 2005)
J/ApJ/617/1091 : La and Eu abundances (Simmerer+, 2004)
J/ApJ/530/783 : The r-process enriched giant HD 115444 (Westin+, 2000)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- El Chemical element designation
4- 5 I2 --- Z Atomic number
7- 10 F4.2 [-] log(e)m Solar-system meteoritic value (Lodders,
2003ApJ...591.1220L 2003ApJ...591.1220L)
12- 15 F4.2 [-] e_log(e)m Uncertainty in log(e)m
17- 20 F4.2 [-] log(e)s ?=- Solar photospheric value
22- 25 F4.2 [-] e_log(e)s ? Uncertainty in log(e)s
27- 30 F4.2 [-] sigma ?=- Error bar
32- 33 I2 --- Nlines ?=- Number of lines used for the photospheric
abundance
35- 36 I2 --- Ref Reference for the photospheric abundance (1)
38- 44 F7.4 [-] logNremp Empirical r-process abundance component
estimation (2)
46- 52 F7.4 [-] logNrst Stellar r-process abundance component
estimation (2)
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Note (1): References as follows:
1 = This paper;
2 = Lawler et al. (2001ApJ...556..452L 2001ApJ...556..452L);
3 = Lawler et al. (2009ApJS..182...51L 2009ApJS..182...51L, Cat. J/ApJS/182/51);
4 = Den Hartog et al. (2003ApJS..148..543D 2003ApJS..148..543D);
5 = Lawler et al. (2006ApJS..162..227L 2006ApJS..162..227L, Cat. J/ApJS/162/227);
6 = Lawler et al. (2001ApJ...563.1075L 2001ApJ...563.1075L);
7 = Den Hartog et al. (2006ApJS..167..292D 2006ApJS..167..292D, Cat. J/ApJS/167/292);
8 = Lawler et al. (2001ApJS..137..341L 2001ApJS..137..341L);
9 = Lawler et al. (2004ApJ...604..850L 2004ApJ...604..850L);
10 = Lawler et al. (2008ApJS..178...71L 2008ApJS..178...71L);
11 = Lawler et al. (2007ApJS..169..120L 2007ApJS..169..120L, Cat. J/ApJS/169/120).
Note (2): Estimates of the r-process only abundances Nr of solar-system RE
elements, based on the differences between total meteoritic abundances
Nmet and "empirical" and "stellar" estimates of the s-process only
abundances Ns; see the text for explanation of these estimates. These
meteoritic abundances (normalized to log N(Si)=6) can be translated to
photospheric ones (normalized to H=12) through logε=logN+1.54
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Byte-by-byte Description of file: table45.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- Name Star name
14- 15 A2 --- El Chemical element designation
17- 18 I2 --- Z Atomic number
20- 24 F5.2 [-] log(e) ?=- Log ε abundance of element
26- 29 F4.2 [-] e_log(e) ? Uncertainty in log(e)
31- 34 F4.2 --- sigma ?=- Error bar
36- 37 I2 --- Nlines ?=- Number of lines used for the stellar
abundance
39- 40 I2 --- Ref Reference for the stellar abundance (1)
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Note (1): References as follows:
1 = This paper;
2 = Lawler et al. (2007ApJS..169..120L 2007ApJS..169..120L, Cat. J/ApJS/169/120);
3 = Ivans et al. (2006ApJ...645..613I 2006ApJ...645..613I, Cat. J/ApJ/645/613);
4 = Lawler et al. (2009ApJS..182...51L 2009ApJS..182...51L, Cat. J/ApJS/182/51);
5 = Den Hartog et al. (2003ApJS..148..543D 2003ApJS..148..543D);
6 = Lawler et al. (2006ApJS..162..227L 2006ApJS..162..227L, Cat. J/ApJS/162/227);
7 = Den Hartog et al. (2006ApJS..167..292D 2006ApJS..167..292D, Cat. J/ApJS/167/292);
8 = Cowan et al. (2002ApJ...572..861C 2002ApJ...572..861C);
9 = Sneden et al. (2003ApJ...591..936S 2003ApJ...591..936S);
10 = Lawler et al. (2004ApJ...604..850L 2004ApJ...604..850L);
11 = Lawler et al. (2008ApJS..178...71L 2008ApJS..178...71L).
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Byte-by-byte Description of file: table10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.2 cm-1 LowE Lower level energy; Martin et al.,
1978aelr.book.....M 1978aelr.book.....M
10- 18 F9.3 cm-1 UpE ? Upper level energy; Ivasson et al.,
2001PhyS...64..455I 2001PhyS...64..455I
20 I1 --- J J level
22- 27 F6.3 mK hfsA Hyperfine structure A-Constant (1)
29- 33 F5.3 mK e_hfsA ? Uncertainty in hfsA
35 A1 --- r_hfsA Reference for hfsA (2)
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Note (1): Where 1mK=0.001cm-1.
Note (2): References as follows:
a = Martin et al. (1978aelr.book.....M 1978aelr.book.....M);
b = Rivest et al. (2002CaJPh..80..557R 2002CaJPh..80..557R);
c = Ivasson et al. (2001PhyS...64..455I 2001PhyS...64..455I);
d = Ginibre (1989PhyS...39..694G 1989PhyS...39..694G);
e = Li et al. (2000, Phys. Rev. A, Vol. 62, Issue 5, 052504);
f = Li et al. (2000HyInt.128..417L 2000HyInt.128..417L);
g = Ma et al. (1999JPhB...32.1345H 1999JPhB...32.1345H).
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Byte-by-byte Description of file: table1[12].dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.3 cm-1 sigma Center-of-Gravity Wavenumber
11- 19 F9.4 0.1nm lamAir Center-of-Gravity Air Wavelength in Angstroms
21- 24 F4.1 --- F1 Component upper level F or total angular
momentum
26- 29 F4.1 --- F0 Component lower level F or total angular
momentum
31- 38 F8.5 cm-1 dsigma Component offset Wavenumber (1)
40- 48 F9.6 0.1nm dlam Component offset Wavelength (1)
50- 56 F7.5 --- Strength Component strength normalized to sum to one
58- 60 I3 --- A ? Isotope (for table12.dat file only)
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Note (1): With respect to Center-of-gravity Wavenumber
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Nov-2009