Benchmark stars, benchmark spectrographs - Detailed spectroscopic comparison of ESPRESSO, PEPSI, and HARPS data for Gaia benchmark stars

Free Access

Table A.2

Stellar parameters and chemical abundances of the Sun derived from the ESPRESSO combined and the individual 1D spectra (from Spec 1 to Spec 5 in the table).

Parameter	ESPRESSO	Spec 1	Spec 2	Spec 3	Spec 4	Spec 5
T_eff	5768 ± 12	5782 ± 11	5781 ± 11	5783 ± 10	5780 ± 11	5760 ± 10
log g	4.410 ± 0.027	4.445 ± 0.033	4.415 ± 0.027	4.435 ± 0.020	4.423 ± 0.020	4.423 ± 0.020
V_tur	0.968 ± 0.017	1.010 ± 0.018	1.024 ± 0.018	0.996 ± 0.015	0.975 ± 0.017	0.981 ± 0.014
[Fe/H]	0.004 ± 0.010	0.003 ± 0.009	0.003 ± 0.009	0.007 ± 0.008	0.008 ± 0.009	−0.005 ± 0.008
[NaI/H]	0.053 ± 0.039	0.066 ± 0.047	0.069 ± 0.059	0.076 ± 0.042	0.082 ± 0.038	0.063 ± 0.044
[MgI/H]	0.025 ± 0.016	0.026 ± 0.067	0.037 ± 0.075	0.026 ± 0.053	0.033 ± 0.047	0.024 ± 0.048
[AlI/H]	0.014 ± 0.019	0.028 ± 0.074	0.020 ± 0.095	0.011 ± 0.065	0.020 ± 0.056	−0.004 ± 0.068
[SiI/H]	0.006 ± 0.019	0.012 ± 0.008	0.016 ± 0.019	0.020 ± 0.010	0.028 ± 0.013	0.021 ± 0.013
[CaI/H]	0.027 ± 0.043	−0.002 ± 0.041	0.017 ± 0.039	0.027 ± 0.035	0.030 ± 0.039	0.015 ± 0.037
[TiI/H]	0.003 ± 0.023	0.012 ± 0.017	0.015 ± 0.024	0.022 ± 0.016	0.017 ± 0.021	0.004 ± 0.022
[TiII/H]	−0.009 ± 0.014	−0.006 ± 0.018	−0.009 ± 0.015	−0.006 ± 0.014	−0.007 ± 0.010	−0.003 ± 0.014
[CrI/H]	0.038 ± 0.025	0.039 ± 0.026	0.037 ± 0.022	0.038 ± 0.023	0.028 ± 0.024	0.024 ± 0.022
[NiI/H]	0.004 ± 0.013	0.013 ± 0.014	0.015 ± 0.012	0.012 ± 0.014	0.012 ± 0.013	0.000 ± 0.013

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.