J/A+A/372/862 Lithium abundances in IC 2602 and IC 2391 (Randich+, 2001)
Membership, lithium, and metallicity in the young open clusters
IC 2602 and IC 2391: enlarging the sample
Randich S., Pallavicini R., Meola G., Stauffer J.R., Balachandran S.C.
<Astron. Astrophys. 372, 862 (2001)>
=2001A&A...372..862R 2001A&A...372..862R
ADC_Keywords: Clusters, open ; Abundances, peculiar
Keywords: open clusters and associations: individual: IC 2602, IC 2391 -
stars: abundances - stars: interiors
Description:
Lithium abundances and [Fe/H] for a sample of late-type stars in the
young open clusters IC 2602 and IC 2391. Abundances are based on high
resolution spectra obtained at ESO (3.6m + CASPEC) and
CTIO (4m + echelle spectrograph)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 77 81 Star positions and magnitudes (from Simbad)
table2.dat 54 48 Li abundances for sample stars
table3.dat 51 10 Li abundances for S89 (Stauffer et al.,
1989ApJ...342..285S 1989ApJ...342..285S) sample
table4.dat 47 23 Recomputed Li abundances for R97
(Randish et al., 1997A&A...323...86R 1997A&A...323...86R)
tables.tex 113 165 LaTeX version of the tables
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Object name
17- 35 A19 --- SName Simbad name
37- 38 I2 h RAh ? Right ascension (J2000.0)
40- 41 I2 min RAm ? Right ascension (J2000.0)
43- 46 F4.1 s RAs ? Right ascension (J2000.0)
48 A1 --- DE- Declination sign (J2000.0)
49- 50 I2 deg DEd ? Declination (J2000.0)
52- 53 I2 arcmin DEm ? Declination (J2000.0)
55- 56 I2 arcsec DEs ? Declination (J2000.0)
60- 64 F5.2 mag Bmag ? B magnitude
66- 70 F5.2 mag Vmag V magnitude
72- 77 A6 --- SpType Spectral type
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Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Star designation (1)
17- 20 I4 K Teff Effective temperature
22- 24 I3 K e_Teff rms uncertainty on Teff
25 A1 --- n_Teff [*] Note on e_Teff (2)
27- 28 A2 --- l_EW(Li) [≤ ] Limit flag on EW(Li)
29- 31 I3 0.1pm EW(Li) ? Lithium equivalent width
33- 34 I2 0.1pm e_EW(Li) ? rms uncertainty on EW(Li)
36- 37 A2 --- n_logn(Li)LTE [≤ ] Limit flag on logn(Li)LTE
38- 42 F5.2 --- logn(Li)LTE ? LTE Li abundance
44- 46 F3.1 --- logn(Li)NLTE ? NLTE Li abundance
48- 51 F4.2 --- e_logn(Li)NLTE ? rms uncertainty on logn(Li)NLTE
52 A1 --- n_logn(Li)NLTE [*] Note on e_logn(Li)NLTE (2)
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Note (1): Star designations:
IC 2602 RNNA = [RSP95] NNNA
IC 2602 WNNN = Cl* IC 2602 W NNN
IC 2391 VXRNNA = VXR PSPC NNa
IC 2391 SHJM NN = Cl* IC 2391 SHJM NN
Note (2): Asterisks indicate stars for which errors in Teff could not be
directly estimated
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Star designation (IC 2602 R NNA,
[RSP95] NN in Simbad)
17- 20 I4 K TeffR97 R97 effective temperature
22- 23 A2 --- l_EW(li)R97 [≤ >] Limit flag on EW(Li)
24- 27 F4.2 0.1pm EW(li)R97 R97 Li equivalent width
29- 32 F4.2 0.1pm EW(li)R97b ? Other R97 Li equivalent width
34- 37 I4 K Teff New effective temperature
39- 42 F4.2 0.1pm EW(li) New Li equivalent width
44- 47 F4.2 0.1pm EW(li)b ? New other Li equivalent width
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Table 5: Comparison of stars observed in different runs
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(ESO '94) (CTIO)
star EW(Li) Hα EW(Li) Hα
(0.1pm) (0.1nm) (0.1pm) (0.1nm)
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R 15 259 +0.20 255 +0.2
R 66 186 -0.95 173 -1.0
R 70 168 -1.05 172 -1.2
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(ESO '95) (CTIO)
star EW(Li) Hα EW(Li) Hα
(0.1pm) (0.1nm) (0.1pm) (0.1nm)
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R 24A 112 +3.0 107 +1.9
R 31 ≤ 55 +4.0 ≤ 70 +3.9
R 38 ≤ 50 +4.9 ≤100 +11.3
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Acknowledgements: Maria Sofia Randich
(End) Patricia Bauer [CDS] 20-Mar-2001