Sher 1

(MWSC 1881; OCL 837; ESO 128 27; Miller 2)

0.72 UTI

0.56

C_N

0.36

C_dens

1.0

C_C3

0.84

C_lit

1.0

C_dup

N₅₀ (P>50% members) 62

Stellar density (N₅₀/rad) 1.8 [N/pc²]

C3 classification AA

C_N 0.56 Moderately populated
C_dens 0.36 Loose
C_C3 1.0 Very high quality
C_lit 0.84 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Sher 1 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a large^* distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~9.22 kpc) differs significantly from the median photometric distance (~5.88 kpc).

Very distant High extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for Sher 1 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	165.247	-60.232	0.108	-5.463	2.389	56.65
Hunt & Reffert	2024	165.255	-60.23	0.115	-5.502	2.376	41.403
Celli et al.	2024	165.262	-60.233	–	–	–	–
Cavallo et al.	2024	165.092	-60.261	0.113	–	–	–
Hunt & Reffert	2023	165.255	-60.23	0.115	-5.502	2.376	41.403
Just et al.	2023	165.249	-60.226	–	–	–	–
Cantat-Gaudin et al.	2020	165.262	-60.233	0.11	-5.412	2.408	–
Cantat-Gaudin & Anders	2020	165.262	-60.233	0.11	-5.412	2.408	–
Bica et al.	2019	165.255	-60.229	–	–	–	–
Cantat-Gaudin et al.	2018	165.262	-60.233	0.11	-5.412	2.408	–
Loktin & Popova	2017	165.27	-60.233	–	-8.19	1.9	–
Kharchenko et al.	2016	165.249	-60.226	–	–	–	–
Dias et al.	2014	165.267	-60.233	–	-8.19	1.93	–
Kharchenko et al.	2013	165.255	-60.23	–	-6.42	5.84	–
van den Bergh	2006	165.025	-60.367	–	–	–	–
Dias et al.	2002	165.267	-60.233	–	-8.19	1.93	–
Dambis	1999	165.025	-60.367	–	–	–	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	B_frac	BSS
UCC	99999–	5.88	4.26	2.71	5	0.360	702	–	–
Hunt & Reffert	2024	–	–	–	–	–	1662⁽¹⁾	–	–
Celli et al.	2024	–	–	–	13	–	702	–	–
Cavallo et al.	2024	5.83	3.98	–	41	0.360	–	–	–
Hunt & Reffert	2023	9.01	3.83	2.71	19	–	–	–	–
Just et al.	2023	–	–	–	5	–	241	–	–
Cantat-Gaudin et al.	2020	6.05	3.35	–	13	–	–	–	–
Cantat-Gaudin & Anders	2020	7.21	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	7.21	–	–	–	–	–	–	–
Loktin & Popova	2017	5.88	4.26	–	5	–	–	–	–
Kharchenko et al.	2016	5.80	4.65	–	5	–	–	–	–
Kharchenko et al.	2013	5.80	4.65	–	5	–	–	–	–
van den Bergh	2006	5.88	4.25	–	5	–	–	–	–
Dias et al.	2002	5.88	4.26	–	5	–	–	–	–
Dambis	1999	6.00	4.31	–	3	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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