Access to Astronomical Catalogues

← Click to display the menu
J/A+A/363/239     Lithium abundances in single giant stars (De Medeiros+, 2000)

Rotation and lithium in single giant stars. De Medeiros J.R., do Nascimento J.D.Jr, Sankarankutty S., Costa J.M., Maia M.R.G. <Astron. Astrophys. 363, 239 (2000)> =2000A&A...363..239D
ADC_Keywords: Stars, giant ; Abundances, peculiar ; Rotational velocities Keywords: stars: abundances - stars: evolution - stars: late-type - stars: rotation Abstract: In the present work, we study the link between rotation and lithium abundance in giant stars of luminosity class III, on the basis of a large sample of 309 single stars of spectral type F, G and K. We have found a trend for a link between the discontinuity in rotation at the spectral type G0III and the behavior of lithium abundances around the same spectral type. The present work also shows that giant stars presenting the highest lithium contents, typically stars earlier than G0III, are those with the highest rotation rates, pointing for a dependence of lithium content on rotation, as observed for other luminosity classes. Giant stars later than G0III present, as a rule, the lowest rotation rates and lithium contents. A large spread of about five magnitudes in lithium abundance is observed for the slow rotators. Finally, single giant stars with masses 1.5<M/M≤2.5 w a clearest trend for a correlation between rotational velocity and lithium abundance. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 41 309 Physical parameters for the programme stars
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD (Cat. III/135) number 8- 21 A14 --- SpType Spectral type 23- 26 F4.2 mag B-V B-V colour index 28- 31 F4.1 km/s vsini Rotational velocity 33 A1 --- l_Li Limit flag on Li 34- 38 F5.2 --- Li Li abundance 40 A1 --- r_Li Reference (1)
Note (1): References: a: Balachandran (1990, ApJ 93, 235) 1990ApJ...354..310B ??? b: Wallerstein et al. (1994AJ....107.2211W) c: Brown et al. (1989ApJS...71..293B)
History: Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 31-Jan-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact