||Volatile and Refractory Abundances of Solar Analogs with
||472, New Quests in Stellar Astrophysics III: A Panchromatic View of Solar-like Stars, With and Without Planets
||González Hernández, J. I.; Delgado-Mena, E.; Sousa, S. G.; Israelian, G.; Santos, N. C.; Udry, S.
||We present a detailed abundance analysis of high-quality
HARPS, UVES and UES spectra of 95 solar analogs, 33 with and
62 without detected planets. These
spectra have S/N > 350. We investigate the possibility that
the presence of terrestrial planets could affect
the volatile-to-refratory abundance ratios.
We do not see clear differences between stars with and
without planets, either in the only seven solar twins or
even when considering the whole sample of 95 solar analogs
in the metallicity range –0.3 < [Fe/H] < 0.5.
We demonstrate that after removing the Galactic
chemical evolution effects the possible differences
between stars with and without planets in these samples
practically disappear and the volatile-to-refractory
abundance ratios are very similar to solar values.
We investigate the abundance ratios of volatile and refractory
elements versus the condensation temperature of this sample
of solar analogs, in particular, paying a special attention to
those stars harbouring super-Earth-like planets.