Chemical abundances of 451 stars from the HARPS GTO planet search program - Thin disc, thick disc, and planets

Home

All issues

Volume 497 / No 2 (April II 2009)

A&A, 497 2 (2009) 563-581

Full HTML

Free Access

Table 6:

Average abundance values for stars with and without planets, along with their rms, the number of stars used in their determination, and the difference between the two groups. The last four columns list the average abundance values of Neptunian hosts and hosts with Neptunes and super-earths only, along with the number of stars used in their determination.
Species	Planet hosts			Non-planet hosts			Difference	Neptunian hosts		Neptunian hosts only
(X)	$\langle [$ X/H $]\rangle$	rms	N	$\langle [$ X/H $]\rangle$	rms	N	of Averages	$\langle [$ X/H $]\rangle$	N	$\langle [$ X/H $]\rangle$	N
Si	0.13	0.17	68	-0.08	0.21	383	0.21	0.08	6	-0.16	3
TiI	0.16	0.14	62	-0.01	0.18	321	0.17	0.12	4	-0.05	2
TiII	0.11	0.15	68	-0.09	0.20	383	0.20	0.04	6	-0.18	3
ScI	0.20	0.19	61	-0.01	0.22	288	0.21	0.14	4	-0.07	2
ScII	0.14	0.19	68	-0.09	0.23	383	0.23	0.12	6	-0.17	3
Ca	0.10	0.14	68	-0.08	0.18	383	0.18	0.05	6	-0.14	3
Mn	0.11	0.24	68	-0.15	0.31	383	0.27	0.05	6	-0.28	3
CrI	0.11	0.17	68	-0.10	0.22	383	0.21	0.06	6	-0.18	3
CrII	0.07	0.17	68	-0.14	0.22	383	0.21	-0.01	6	-0.26	3
V	0.18	0.20	56	-0.02	0.25	243	0.20	0.15	4	-0.05	2
Co	0.17	0.21	68	-0.05	0.25	383	0.22	0.19	6	-0.12	3
Ni	0.12	0.20	68	-0.12	0.24	383	0.23	0.07	6	-0.22	3
Na	0.11	0.20	68	-0.11	0.23	383	0.22	0.10	6	-0.20	3
Mg	0.13	0.16	68	-0.07	0.20	383	0.19	0.12	6	-0.08	3
Al	0.15	0.17	68	-0.03	0.20	383	0.17	0.17	6	-0.04	3
Fe^*	0.10	0.17	68	-0.12	0.23	383	0.22	0.03	6	-0.24	3

* [Fe/H] values from Sousa et al. (2008).

Source LaTeX | All tables | In the text

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.