Stock 18

(MWSC 4)

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0.75 UTI
0.34
CN
1.0
Cdens
0.75
CC3
0.82
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 34
Radius (P>50% members) 1.3 [arcmin]
  • CN 0.34 Poorly populated
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.82 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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Stock 18 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is well-studied in the literature.
Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Bronze sample.

Data
🔍 Search references for Stock 18 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 – 0.404 64.627 0.325 -2.668 -0.64 –
Hunt & Reffert 2024 0.404 64.624 0.324 -2.679 -0.685 –
Celli et al. 2024 0.399 64.625 – – – –
Cavallo et al. 2024 0.404 64.629 0.326 – – –
Hunt & Reffert 2023 0.404 64.624 0.324 -2.679 -0.685 –
Just et al. 2023 0.388 64.622 – – – –
Cantat-Gaudin et al. 2020 0.399 64.625 0.294 -2.692 -0.587 –
Cantat-Gaudin & Anders 2020 0.399 64.625 0.294 -2.692 -0.587 –
Soubiran et al. 2018 0.399 64.625 – – – -66.81
Cantat-Gaudin et al. 2018 0.399 64.625 0.294 -2.692 -0.587 –
Loktin & Popova 2017 0.405 64.624 – -4.298 -4.763 –
Kharchenko et al. 2016 0.388 64.622 – – – –
Dias et al. 2014 0.404 64.625 – -2.78 -0.15 –
Kharchenko et al. 2013 0.397 64.625 – -3.59 -1.15 –
Kharchenko et al. 2012 0.397 64.625 – -3.41 -1.17 –
Dias et al. 2002 0.404 64.625 – -2.78 -0.15 –

💡 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] Bfr BSS
Hunt & Reffert 2024 – – – – – 358* – –
Celli et al. 2024 – – – 13 – 245 – –
Cavallo et al. 2024 2.49 1.65 – 13 0.320 – – –
Hunt & Reffert 2023 2.84 2.06 1.76 5 – – – –
Just et al. 2023 – – – 479 – 3 – –
Cantat-Gaudin et al. 2020 2.86 1.94 – 13 – – – –
Cantat-Gaudin & Anders 2020 3.10 – – – – – – –
Soubiran et al. 2018 3.10 – – – – – – –
Cantat-Gaudin et al. 2018 3.10 – – – – – – –
Loktin & Popova 2017 1.06 1.11 – 380 – – – –
Kharchenko et al. 2016 0.77 0.55 – 479 – – – –
Kharchenko et al. 2013 0.77 0.55 – 479 – – – –
Kharchenko et al. 2012 0.75 0.31 – 653 – – – –
Dias et al. 2002 1.24 2.20 – 126 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization
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Stock 18 UCC
Stock 18 HUNT23
Stock 18 CANTAT20
Galactocentric position diagram