Asteroseismic age estimates of RGB stars in open clusters - A statistical investigation of different estimation methods

Home

All issues

Volume 619 (November 2018)

A&A, 619 (2018) A158

Full HTML

Free Access

Table 1.

Estimated median (-est.), 16th (σ−), and 84th (σ+) percentiles of the stellar parameters (α_ml, ΔY/ΔZ, Z, and age) recovered in the twelve considered scenarios.

	α_ml			ΔY/ΔZ			Z			age (Gyr)

	Est.	σ−	σ+	Est.	σ−	σ+	Est.	σ−	σ+	Est.	σ−	σ+
S35	1.75	0.04	0.05	1.88	0.59	0.69	0.0269	0.0014	0.0014	7.79	0.94	0.98
S35-9	1.73	0.04	0.04	2.14	0.54	0.55	0.0267	0.0013	0.0014	8.84	0.93	0.78
S80	1.75	0.03	0.04	1.89	0.57	0.65	0.0269	0.0010	0.0010	7.72	0.85	0.88
S80-9	1.73	0.03	0.03	2.06	0.46	0.55	0.0265	0.0009	0.0010	8.94	0.84	0.71
S35w	1.74	0.03	0.03	1.99	0.31	0.30	0.0268	0.0012	0.0012	7.65	0.54	0.55
S35-9w	1.74	0.03	0.03	1.96	0.29	0.31	0.0268	0.0012	0.0012	9.10	0.59	0.50
S80w	1.74	0.01	0.02	1.98	0.15	0.10	0.0268	0.0006	0.0007	7.61	0.10	0.25
S80-9w	1.74	0.01	0.02	1.83	0.09	0.19	0.0267	0.0006	0.0006	9.28	0.38	0.08
S35S	1.74	0.13	0.15	2.00	0.58	0.67	0.0267	0.0055	0.0059	7.49	1.71	1.67
S35-9S	1.74	0.13	0.10	2.25	0.67	0.50	0.0267	0.0055	0.0069	8.57	1.92	0.82
S80S	1.74	0.10	0.15	2.00	0.59	0.67	0.0267	0.0055	0.0069	7.52	1.71	1.59
S80-9S	1.74	0.15	0.13	2.29	0.67	0.46	0.0267	0.0055	0.0069	8.57	1.97	0.88

Notes. The algorithm adopted in the recovery is specified by the suffix in the scenario names. A suffix “w” indentifies the results obtained using the ML method, “S” identifies the resuls using the SCEPtER approach, while no suffix refers to the geometrical fit.

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.