The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun
Published December 2, 2022 | Version v1
Poster Open

Lithium Abundance Scatter in Solar Twins

Authors/Creators

  • 1. Astronomical Observatory of Odesa National University, Ukraine
  • 2. Department of Astronomy, University of Geneva, Switzerland
  • 3. Laboratoire d'Astrophysique de Bordeaux, CNRS, France
  • 4. Sternberg State Astronomical Institute, Lomonosov Moscow State University, Russia
  • 5. LUPM CNRS, , Universite de Montpellier, France

Description

We analyse the dispersion of Li in the atmosphere of 56 solar type stars including
22 solar twins. Lithium abundances are derived by comparing observed and
synthetic spectra in the region of Li I line 6707 A, taking into account NLTE
corrections. We discuss the observed scatter in Li abundance of solar twins as a
function of age, rotation velocity, and other factors. We compare to the
predictions of stellar evolution models which include different transport processes
for angular momentum and chemicals.

Files

mishenina_etal_coolstars_toulouse_2022.pdf

Files (433.6 kB)

Name Size Download all
md5:8b9d67859c316d025db12eb91cad2131
433.6 kB Preview Download

Additional details

References

  • Augustson, K. C.; Mathis, S. (2019), ApJ, 874, 83
  • Castelli, F.; Kurucz, R. (2004), astro-ph/0405087
  • Charbonnel, C.; Talon, S. (2005), Science, 309, 2189
  • Dumont, T. et al. (2021), A&A, 646, 48
  • Figueira, P. et al. (2014), A&A, 570, A21
  • Kupka, F., et al. (1999), A&AS, 138, 119
  • Lebreton, Y.; Reese, D. R. (2020), A&A, 642, 88
  • Mahdi, D. et al. (2016), A&A, 587, A131
  • Melendez, J. et al. (2014), A&A, 567, L3
  • Moultaka, J. et al. (2004), PASP, 116, 693
  • Pietrinferni, A. et al. (2004), ApJ, 612, 168
  • Pietrinferni, A. et al. (2006), ApJ, 642, 797
  • Queloz, D. et al. (1998), A&A, 335, 183
  • Ramirez, I. et al. (2012), ApJ, 756, 46
  • Talon, S.; Charbonnel, C. (2005), A&A, 440, 981
  • Talon, S.; Zahn, J. -P. (1997), A&A, 317, 749
  • Tsymbal, V. (1996), ASP Conf. Ser., 108, 198
  • Gaia collaboration, Vallenari et al. (2022), arXiv:2208.00211
  • Wright, J. T. et al. (2004), ApJS, 152, 261
  • Zahn, J. -P. (1992), A&A 265 115