Multipopulation aftereffects on the color–magnitude diagram and Cepheid variables of young stellar systems

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Table 4

Spread of the (red and blue) clumps in the V, I and K bands for populations with Y = 0.25 (FG), Y = 0.35 (SG), and the mixed population (multiple).

t	clump	V _mean	σ _V	I _mean	σ _I	K _mean	σ _K	ΔV_He−b	ΔI_He−b	ΔK_He−b
Myr		mag	mag	mag	mag	mag	mag	mag	mag	mag


t_FG = 130	red	–2.355	0.126	–3.3591	0.150	–4.925	0.215	0.467	0.516	0.701
t_SG = 30		–4.578	0.022	–5.761	0.024	–7.633	0.031	0.136	0.133	0.142
multiple		–3.802	1.062	–4.923	1.220	–6.689	1.297	2.545	2.716	3.108


t_FG = 130	blue	–3.278	0.059	–3.470	0.081	–3.669	0.125	0.232	0.305	0.494
t_SG = 30		–5.311	0.169	–5.348	0.213	–5.268	0.308	0.788	1.079	1.531
multiple		–4.888	0.839	–4.957	0.787	–4.936	0.706	2.760	2.818	2.964


t_FG = 150	red	–2.098	0.157	–3.080	0.188	–4.603	0.262	0.618	0.642	0.810
t_SG = 50		–3.704	0.079	–4.814	0.063	–6.569	0.036	0.483	0.408	0.153
multiple		–3.149	0.772	–4.214	0.834	–5.889	0.948	2.296	2.313	2.395


t_FG = 150	blue	–3.006	0.053	–3.264	0.067	–3.554	0.090	0.192	0.243	0.339
t_SG = 50		–4.774	0.064	–4.900	0.074	–4.973	0.127	0.307	0.4351	0.689
multiple		–4.145	0.846	–4.322	0.781	–4.493	0.694	2.160	2.058	1.992


t_FG = 200	red	–1.577	0.240	–2.529	0.282	–3.993	0.368	0.793	0.913	1.139
t_SG = 100		–2.623	0.115	–3.647	0.098	–5.250	0.071	0.585	0.455	0.286
multiple		–2.352	0.485	–3.358	0.517	–4.924	0.585	1.869	1.888	1.941


t_FG = 200	blue	–2.319	0.128	–2.812	0.117	–3.425	0.134	0.446	0.402	0.595
t_SG = 100		–3.710	0.077	–4.073	0.050	–4.513	0.092	0.287	0.305	0.387
multiple		–2.900	0.695	–3.338	0.629	–3.879	0.549	1.776	1.608	1.515


t_FG = 400	red	–0.401	0.290	–1.199	0.290	–2.355	0.295	1.081	1.130	1.118
t_SG = 300		–0.868	0.292	–1.735	0.303	–3.015	0.323	0.988	1.027	1.079
multiple		–0.657	0.373	–1.493	0.399	–2.717	0.452	1.563	1.712	1.882


t_FG = 600	red	0.302	0.240	–0.496	0.239	–1.648	0.244	0.781	0.794	0.849
t_SG = 500		–0.030	0.273	–0.861	0.286	–2.078	0.307	0.984	1.007	1.079
multiple		0.097	0.306	–0.721	0.322	–1.914	0.353	1.243	1.305	1.426


t_FG = 800	red	0.552	0.249	–0.247	0.255	–1.411	0.258	0.807	0.846	0.889
t_SG = 700		0.027	0.133	–0.821	0.151	–2.068	0.174	0.541	0.596	0.662
multiple		0.370	0.330	–0.446	0.353	–1.639	0.389	1.152	1.251	1.374

Notes. The age difference between the first- and second-generation stars is 100 Myr.

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