J/A+A/364/674 Li-rich giants atomic lines (Castilho+, 2000)
Detailed analysis of a sample of Li-rich giants
Castilho B.V., Gregorio-Hetem J., Spite F., Barbuy B., Spite M.
<Astron. Astrophys. 364, 674 (2000)>
=2000A&A...364..674C 2000A&A...364..674C
ADC_Keywords: Stars, giant ; Stars, peculiar ; Spectroscopy ; Equivalent widths
Keywords: stars: late-type - stars: evolution - stars: atmospheres -
stars: abundances
Abstract:
A detailed analysis has been carried out for a sample of 16 red giants
showing a strong Li I 670.8nm line. Ten of them were detected in a
survey by Castilho et al. (1998A&AS..127..139C 1998A&AS..127..139C), and the other 6 stars
are Li-rich giants selected from the literature. Element abundances in
the sample Li-rich giants are similar to those in normal red giants,
differing only by their high Li abundance and infrared excess. This
suggests that Li-rich giants may correspond to a phase of stellar
evolution of normal red giants, when Li is produced and transported to
the atmosphere.
Description:
The table presents the equivalent widths and parameters of the atomic
lines used in the analysis of 16 red giants showing a strong Li I
670.8nm line.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 41 16 Stars positions (from Simbad)
table7.dat 50 3836 Equivalent width and parameters of the atomic
lines used in the analysis
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See also:
J/A+A/297/503 : HD 146850 atomic lines (Castilho+, 1995)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Object name
19- 20 I2 h RAh Right ascension (J2000.0)
22- 23 I2 min RAm Right ascension (J2000.0)
25- 28 F4.1 s RAs Right ascension (J2000.0)
30 A1 --- DE- Declination sign (J2000.0)
31- 32 I2 deg DEd Declination (J2000.0)
34- 35 I2 arcmin DEm Declination (J2000.0)
37- 38 I2 arcsec DEs Declination (J2000.0)
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Object name
17- 18 A2 ---- El Element
19 I1 ---- Ion Ionization state 1 for (I) and 2 for (II)
21- 28 F8.3 0.1nm lambda Wavelength
30- 34 F5.3 eV EP Excitation potential
36- 41 F6.3 ---- loggf Oscillator strength
43- 45 I3 0.1pm EW Equivalent width
47- 49 A3 --- u_EW [? ] Uncertainty flag on EW
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Acknowledgements: Bruno Vaz Castilho
(End) Patricia Bauer CDS 24-Nov-2000