Physical characterization of recently discovered globular clusters in the Sagittarius dwarf spheroidal galaxy - I. Metallicities, ages, and luminosities

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Volume 654 (October 2021)

A&A, 654 (2021) A23

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Table 1.

Position, metallicity, age, luminosity, mass-to-light ratio, mass, and specific frequency of RR Lyrae stars for all new Sgr GCs we analyzed.

Cluster ID	L	B	[Fe/H]_iso	M_Ks	M_Vtot	Age ^(a)	slope_RGB	[Fe/H]_slope^(b)	M/L_K^(c)	M^(c)	S_RR
	[deg]	[deg]	[dex]	[mag]	[mag]	[Gyr]		[dex]		[M_⊙]
Minni01 ^( * )	5.3706	−9.3482	−1.2 ± 0.2	−5.8 ± 0.8	−3.4	[12]10 − 13	−0.08	−1.22	0.9	3.8 × 10³	43.65
Minni144	4.1693	−11.1990	−0.9 ± 0.2	−7.0 ± 0.7	−5.1	[11]10 − 13	−0.09	−0.90	0.8	1.0 × 10⁴	9.12
Minni145	7.2695	−12.9988	−0.8 ± 0.3	−6.8 ± 1.1	−4.4	[10]10 − 13	−0.092	−0.85	0.8	8.5 × 10³	86.89
Minni146 ^( * )	3.9698	−14.1097	−1.1 ± 0.2	−6.9 ± 1.1	−4.5	[12]7 − 13	−0.084	−1.09	0.9	1.1 × 10⁴	0
Minni147	3.9993	−11.6982	−2.0 ± 0.2	−6.7 ± 1.0	−4.4	[13]10 − 13	−0.07	−1.53	1.1	1.1 × 10⁴	17.38
Minni148	5.3598	−13.3792	−0.3 ± 0.2	−7.2 ± 1.1	−5.4	[10]10 − 13	−0.11	−0.30	0.4	6.2 × 10³	20.75
Minni311 ^( * )	5.2749	−9.32097	−0.6 ± 0.3	−8.0 ± 1.1	−5.7	[10]7 − 13	−0.09	−0.90	0.7	2.3 × 10⁴	0
Minni324	5.7821	−11.9392	−0.5 ± 0.2	−6.9 ± 1.1	−5.0	[13]10 − 13	−0.10	−0.60	0.5	5.8 × 10³	20.0
Minni325 ^( * )	4.1172	−14.5024	−0.4 ± 0.2	−6.9 ± 1.3	−5.1	[10]7 − 13	−0.108	−0.36	0.4	4.7 × 10³	0
Minni326	5.7635	−13.0909	−0.3 ± 0.2	−7.3 ± 1.2	−5.1	[10]10 − 13	−0.11	−0.30	0.4	6.8 × 10³	18.93
Minni328	5.2657	−12.3993	−0.5 ± 0.1	−6.9 ± 0.9	−5.1	[10]10 − 13	−0.10	−0.60	0.5	5.8 × 10³	9.12
Minni329	5.0863	−11.8213	−0.7 ± 0.2	−7.4 ± 1.3	−5.3	[13]7 − 13	−0.096	−0.73	0.8	1.5 × 10⁴	0
Minni330	6.1214	−14.0065	−0.6 ± 0.2	−7.2 ± 1.1	−4.9	[10]10 − 13	−0.096	−0.73	0.7	1.1 × 10⁴	10.96
Minni332	5.9722	−12.1903	−0.5 ± 0.2	−7.0 ± 1.1	−5.1	[11]10 − 13	−0.101	−0.58	0.5	6.4 × 10³	9.12
Minni335	5.1161	−12.4645	−1.3 ± 0.3	−7.7 ± 1.0	−5.5	[14]10 − 14	−0.076	−1.33	1.0	2.4 × 10⁴	25.24
Minni338	4.4542	−14.5275	−0.6 ± 0.1	−7.6 ± 1.1	−5.3	[10]7 − 13	−0.096	−0.73	0.7	1.6 × 10⁴	0
Minni340	5.2576	−13.2629	−0.5 ± 0.2	−8.0 ± 1.1	−6.1	[10]10 − 13	−0.104	−0.48	0.5	1.6 × 10⁴	7.26
Minni341	5.4627	−13.8907	−0.5 ± 0.2	−8.0 ± 1.2	−6.1	[10]10 − 13	−0.104	−0.48	0.5	1.6 × 10⁴	7.26
Minni342	4.9365	−14.1964	−0.5 ± 0.2	−7.4 ± 1.1	−5.5	[10]10 − 13	−0.099	−0.64	0.5	9.3 × 10³	6.31
Minni343	5.0578	−14.4441	−0.8 ± 0.2	−7.8 ± 1.1	−5.4	[13]10 − 13	−0.092	−0.85	0.8	2.2 × 10⁴	20.75
Minni344	5.1483	−14.6487	−0.4 ± 0.2	−8.3 ± 1.3	−6.0	[10]10 − 13	−0.104	−0.48	0.4	1.7 × 10⁴	3.98

Notes. We mark with an asterisk all GCs that do not show well-populated CMDs, as they could have less accurate parameters.

^(a)

We highlight the age we used in the fit of the isochrones (Fig. A.1) in square brackets.

^(b)

Calculated using the slope_RGB − [Fe/H] relation by Cohen et al. (2015).

^(c)

Mass estimated by us, adopting different values of M/L_K from Haghi et al. (2017), depending on our metallicity values.

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