9 Conclusions

We have presented detailed abundance analyses at high resolution for 8 possible SMR dwarf stars and subgiants. Four of these stars have previously been studied at high resolution; our results in general agree well with them. For the remaining four stars this is, to the best of our knowledge, the first study of this sort.

We find in particular that:

• HD 32147, HD 99491, HD 121370, HD 145675, HD 182572 all have ${\rm [Fe/H]} \geq 0.2$ dex, the lower limit for super metal rich status as defined by Taylor (1996);
• HD 104304 presents a marginal case;
• HD 10780 and HD 196755 are found to have solar iron abundances and are thus not SMR stars;
• some metal-rich, and in particular SMR, stars are old, showing that the large scatter in [Fe/H] at a given age among nearby solar type stars exists at all ages and that a one-to-one relation between age and metallicity among the solar neighbourhood stars may not exist for all metallicities;
• that metal-rich stars are mainly confined to the galactic plane, however, one star in our sample appears to be a thick disk candidate of extremely high metallicity;
• there exists a correlation between SMR-ness and the presence of planets.

Further investigations should be undertaken to prove the possibility that [Ni/Fe] is starting to increase at the highest metallicities as well as the very real possibility that there exists extreme thick disk stars with very high metallicities. In particular, $\alpha$-element abundances should be carefully studied for such candidates.

 

Table A1: Line data

$\lambda$	$\chi_l$	$\log gf$	$\delta \Gamma_6$	$\Gamma _{\rm rad}$	Note
[Å]	[eV]			[s-1]
C I; $\log \epsilon_\odot = 8.56$
6587.61	8.53	-1.246	2.50	1.00e+08
O I; $\log \epsilon_\odot = 8.93$
6300.310	0.00	-9.75	2.50	1.00e+08
7771.95	9.14	0.26	2.50	1.00e+08
7774.17	9.14	0.12	2.50	1.00e+08
7775.35	9.14	-0.11	2.50	1.00e+08
Na I; $\log \epsilon_\odot = 6.33$
6154.23	2.10	-1.58	2.10	7.08e+07
Al I; $\log \epsilon_\odot = 6.47$
6698.67	3.143	-1.89	2.50	3.02e+08
7835.30	4.022	-0.78	2.50	7.94e+07
7836.13	4.022	-0.60	2.50	7.94e+07
Si I; $\log \epsilon_\odot =7.55$
5622.22	4.930	-2.95	2.50	1.95e+08
5665.55	4.920	-2.02	2.50	1.95e+08
5793.07	4.930	-1.95	2.50	1.95e+08
6125.02	5.614	-1.55	2.50	1.00e+08
6142.48	5.619	-1.50	2.50	1.00e+08
6155.69	5.619	-2.43	2.50	1.00e+08
6237.31	5.614	-1.15	2.50	1.00e+08
6721.84	5.863	-1.16	2.50	1.00e+08
6741.62	5.984	-1.63	2.50	2.69e+07
6848.58	5.863	-1.65	2.50	1.00e+08
7455.37	5.964	-2.00	2.50	1.00e+08
7760.62	6.206	-1.36	2.50	1.00e+08
7799.99	6.181	-0.77	2.50	1.00e+08
S I; $\log \epsilon_\odot = 7.21$
6743.531	7.866	-0.84	2.50	3.80e+07
6757.171	7.870	-0.53	2.50	3.89e+07
Ca I; $\log \epsilon_\odot =6.36$
5512.980	2.933	-0.66	2.50	2.80e+08
5581.965	2.523	-0.87	2.50	7.13e+07
5867.562	2.933	-1.61	2.50	2.62e+08
6166.439	2.521	-1.22	2.50	1.86e+07
6169.042	2.523	-0.90	2.50	1.86e+07
6169.563	2.526	-0.67	2.50	1.88e+07
6455.598	2.523	-1.48	2.50	4.64e+07
6464.673	2.526	-2.36	2.50	4.64e+07
6471.662	2.526	-0.98	2.50	4.42e+07
Sc I; $\log \epsilon_\odot =3.10$
5484.626	1.851	0.37	1.50	1.46e+08
Sc II; $\log \epsilon_\odot =3.10$
5526.790	1.768	0.09	1.50	2.16e+08
6300.698	1.507	-2.01	1.50	2.31e+08
6604.601	1.357	-1.16	1.50	1.46e+08
Ti I; $\log \epsilon_\odot = 4.99$
5490.148	1.460	-0.98	2.50	1.43e+08
5739.469	2.249	-0.78	2.50	6.60e+07
5739.978	2.236	-0.74	2.50	6.53e+07
5823.686	2.267	-1.05	2.50	6.53e+07
5832.473	3.337	-0.28	2.50	1.45e+08
5866.451	1.067	-0.83	2.50	4.40e+08
6091.171	2.267	-0.43	2.50	8.50e+07
6092.792	1.887	-1.45	2.50	1.27e+08
6098.658	3.062	-0.07	2.50	5.43e+07
6126.216	1.067	-1.41	2.50	9.93e+06
6599.105	0.900	-2.07	2.50	1.22e+06
6743.122	0.900	-1.73	2.50	6.93e+05
6745.547	2.236	-1.36	2.50	1.44e+08

 

Table A1: continued

$\lambda$	$\chi_l$	$\log gf$	$\delta \Gamma_6$	$\Gamma _{\rm rad}$	Note
[Å]	[eV]			[s-1]
V I; $\log \epsilon_\odot = 4.00$
5670.853	1.081	-0.46	2.50	5.23e+06
5727.048	1.081	-1.22	2.50	7.57e+08
5727.652	1.051	-0.90	2.50	6.15e+07
5830.675	3.113	0.61	2.50	1.83e+08
6039.722	1.064	-0.72	2.50	3.98e+07
6090.214	1.081	-0.15	2.50	3.98e+07
6111.645	1.043	-0.795	2.50	3.90e+07
6135.361	1.051	-0.766	2.50	3.90e+07
6150.157	0.301	-1.54	2.50	7.81e+05
6199.197	0.287	-1.48	2.50	3.25e+06
6224.529	0.287	-1.84	2.50	1.22e+06
6251.827	0.287	-1.45	2.50	3.07e+07
6256.887	0.275	-2.17	2.50	2.94e+06
6452.341	1.195	-0.836	2.50	3.99e+07
Cr I; $\log \epsilon_\odot = 5.67$
5628.621	3.422	-0.83	2.50	6.52e+07
5664.555	3.826	-0.87	2.50	4.80e+07
5783.886	3.322	-0.26	2.50	9.98e+07
5787.965	3.322	-0.21	2.50	1.00e+08
6630.005	1.030	-3.46	2.50	2.40e+07
6669.255	4.175	-0.47	2.50	3.66e+07
7400.226	2.900	-0.171	2.50	6.76e+07
Cr II; $\log \epsilon_\odot = 5.67$
5502.067	4.168	-1.99	2.50	2.55e+07
Fe I; $\log \epsilon_\odot = 7.51$
5491.832	4.186	-2.14	2.00	1.44e+08
5494.463	4.076	-1.85	2.00	2.90e+07
5522.447	4.209	-1.43	2.00	8.97e+07
5539.280	3.642	-2.49	2.00	2.60e+07
5543.936	4.217	-1.10	2.00	2.39e+08
5560.212	4.434	-1.09	2.00	1.64e+08
5577.030	5.033	-1.45	2.00	6.89e+08
5579.340	4.231	-2.29	2.00	2.55e+08
5607.664	4.154	-2.18	2.00	3.50e+08
5608.972	4.209	-2.31	2.00	8.89e+07
5611.360	3.635	-2.91	2.00	1.25e+08
5618.633	4.209	-1.34	2.00	1.05e+08
5619.595	4.386	-1.48	2.00	1.78e+08
5636.696	3.640	-2.56	2.00	3.90e+07
5638.262	4.220	-0.88	2.00	1.94e+08
5646.684	4.260	-2.40	2.00	1.00e+08
5651.469	4.473	-1.76	2.00	1.62e+08
5652.010	4.218	-1.82	2.00	2.36e+08
5741.848	4.256	-1.66	2.00	2.11e+08
5793.689	4.593	-1.29	2.00	5.38e+07
5811.914	4.143	-2.38	2.00	3.76e+07
5814.807	4.283	-1.84	2.00	2.11e+08
5852.219	4.548	-1.21	2.00	1.90e+08
5855.077	4.608	-1.54	2.00	1.91e+08
6034.035	4.312	-2.30	2.00	1.59e+08
6089.580	4.580	-1.30	2.00	9.27e+07
6094.374	4.652	-1.58	2.00	1.92e+08
6096.665	3.984	-1.81	2.00	4.53e+07
6105.131	4.548	-1.91	2.00	1.00e+08
6151.618	2.176	-3.329	2.00	1.55e+08
6157.728	4.076	-1.28	2.00	5.02e+07
6159.378	4.607	-1.85	2.00	1.92e+08
6165.360	4.143	-1.524	2.00	8.77e+07
6173.336	2.223	-2.910	2.00	1.67e+08

 

Table A1: continued

$\lambda$	$\chi_l$	$\log gf$	$\delta \Gamma_6$	$\Gamma _{\rm rad}$	Note
[Å]	[eV]			[s-1]
6187.990	3.943	-1.65	2.00	4.60e+07
6200.313	2.608	-2.48	2.00	1.03e+08
6226.736	3.883	-2.09	2.00	5.42e+07
6229.228	2.845	-2.885	2.00	1.45e+08
6380.743	4.186	-1.366	2.00	7.34e+07
6385.718	4.733	-1.82	2.00	2.34e+08
6419.950	4.733	-0.27	2.00	2.31e+08
6591.313	4.593	-1.99	2.00	1.40e+08
6608.026	2.279	-3.94	2.00	1.66e+08
6653.853	4.154	-2.38	2.00	2.09e+08
6703.567	2.758	-3.03	2.00	1.03e+08
6710.319	1.485	-4.79	2.00	1.66e+07
6726.661	4.607	-1.079	2.00	2.29e+08
6733.151	4.638	-1.45	2.00	2.27e+08
6745.101	4.580	-2.17	2.00	4.78e+07
6745.957	4.076	-2.74	2.00	3.79e+07
6750.153	2.424	-2.641	2.00	7.69e+06
6806.845	2.727	-3.11	2.00	1.02e+08
6810.263	4.607	-1.026	2.00	2.30e+08
6820.372	4.638	-1.16	2.00	2.22e+08
7401.685	4.186	-1.609	2.00	7.03e+07
7418.667	4.143	-1.476	2.00	1.06e+08
7421.559	4.638	-1.73	2.00	2.50e+08
7440.952	4.913	-0.662	2.00	4.97e+08
7443.022	4.186	-1.66	2.00	3.48e+07
7453.998	4.186	-2.36	2.00	1.45e+08
7498.530	4.143	-2.13	2.00	1.16e+08
7507.261	4.415	-0.972	2.00	9.77e+07
7540.430	2.727	-3.77	2.00	9.31e+07
7547.910	5.100	-1.247	2.00	6.38e+08
7551.109	5.085	-1.57	2.00	6.34e+08
7582.122	4.955	-1.64	2.00	1.00e+08
7588.305	5.033	-1.07	2.00	6.35e+08
7745.500	5.086	-1.149	2.00	6.37e+08
7746.587	5.064	-1.276	2.00	6.31e+08
7751.137	4.991	-0.775	2.00	6.44e+08
7844.559	4.835	-1.70	2.00	2.34e+08
Fe II; $\log \epsilon_\odot = 7.51$
5823.155	5.569	-2.88	2.00	3.00e+08	not used
6149.258	3.889	-2.84	2.00	3.39e+09
6247.557	3.892	-2.39	2.00	3.38e+08
6369.462	2.891	-4.20	2.00	2.90e+08
6383.722	5.553	-2.10	2.00	4.09e+08
6416.919	3.892	-2.69	2.00	3.37e+08	not used
6432.680	2.891	-3.64	2.00	2.90e+07
6446.410	6.223	-1.88	2.00	5.22e+08
6456.383	3.903	-2.24	2.00	3.37e+08
7449.335	3.889	-3.168	2.00	4.09e+08	not used
7515.831	3.903	-3.462	2.00	4.09e+08

 

 

Table A1: continued

$\lambda$	$\chi_l$	$\log gf$	$\delta \Gamma_6$	$\Gamma _{\rm rad}$	Note
[Å]	[eV]			[s-1]
Co I; $\log \epsilon_\odot = 4.92$
5647.234	2.280	-1.58	2.50	1.66e+08
6086.658	3.409	0.22	2.50	8.87e+07
6093.143	1.740	-2.37	2.50	2.08e+07
6188.996	1.710	-2.33	2.50	2.22e+07
6257.572	3.713	-1.08	2.50	6.89e+07
6429.906	2.137	-2.39	2.50	9.29e+05
6632.433	2.280	-1.87	2.50	6.46e+06
6814.942	1.956	-1.77	2.50	2.08e+07
7417.367	2.042	-1.97	2.50	2.22e+07
Ni I; $\log \epsilon_\odot = 6.25$
5494.876	4.105	-1.08	2.50	2.05e+08
5578.711	1.676	-2.68	2.50	5.43e+07
5628.335	4.089	-1.35	2.50	2.52e+08
5638.745	3.898	-1.72	2.50	1.27e+08
5643.072	4.165	-1.22	2.50	9.14e+07
6025.751	4.236	-1.69	2.50	1.92e+08
6039.296	4.236	-2.07	2.50	2.16e+08
6086.276	4.266	-0.51	2.50	2.54e+08
6108.107	1.676	-2.56	2.50	4.86e+07
6111.066	4.088	-0.86	2.50	1.46e+08
6128.963	1.676	-3.37	2.50	1.21e+07
6130.130	4.266	-0.963	2.50	2.78e+08
6133.963	4.088	-1.79	2.50	1.45e+08
6176.807	4.088	-0.27	2.50	1.45e+08
6177.236	1.826	-3.562	2.50	4.31e+07
6186.709	4.105	-0.922	2.50	2.06e+09
6204.600	4.088	-1.146	2.50	1.75e+08
6370.341	3.542	-1.957	2.50	1.48e+08
6378.247	4.154	-0.84	2.50	2.08e+08
6424.847	4.167	-1.354	2.50	2.13e+08
6586.308	1.951	-2.748	2.50	4.30e+07
6598.593	4.236	-0.94	2.50	1.92e+08
6643.629	1.676	-2.08	2.50	1.01e+08
6767.768	1.826	-2.24	2.50	1.03e+08
6772.313	3.658	-1.082	2.50	1.50e+08
7414.500	1.986	-2.22	2.50	1.03e+08
7522.758	3.658	-0.535	2.50	1.50e+08
7525.111	3.635	-0.64	2.50	1.19e+08
7574.043	3.833	-0.533	2.50	9.12e+07
7826.766	3.699	-1.856	2.50	5.98e+07

Acknowledgements

SF acknowledges financial support from the Swedish Natural Research Council under their postdoc program. GG acknowledges financial support from the Kennilworth Fund of the New York Community Trust.

Johan Holmberg at Lund Observatory is thanked for providing stellar velocities.