Trumpler 34

(Collinder 387; MWSC 2970; OCL 69)

0.84 UTI

0.6

C_N

1.0

C_dens

1.0

C_C3

0.81

C_lit

1.0

C_dup

N₅₀ (P>50% members) 69

Stellar density (N₅₀/rad) 10.1 [N/pc²]

C3 classification AA

C_N 0.6 Moderately populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.81 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Trumpler 34 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is well-studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Trumpler 34 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–	279.944	-8.436	0.322	-1.027	-3.528	8.658
Hunt & Reffert	2024	279.957	-8.43	0.329	-1.053	-3.543	41.794
Cavallo et al.	2024	279.945	-8.442	0.329	–	–	–
He et al.	2023	279.859	-8.426	0.273	-0.829	-2.999	45.17
Hunt & Reffert	2023	279.957	-8.43	0.329	-1.053	-3.543	41.794
Just et al.	2023	279.942	-8.417	–	–	–	–
Cantat-Gaudin et al.	2020	279.935	-8.439	0.305	-0.933	-3.448	–
Sánchez et al.	2020	279.95	-8.417	–	-1.211	-3.473	–
Cantat-Gaudin & Anders	2020	279.935	-8.439	0.305	-0.933	-3.448	–
Soubiran et al.	2018	279.935	-8.439	–	–	–	-12.38
Bica et al.	2019	279.951	-8.428	–	–	–	–
Cantat-Gaudin et al.	2018	279.935	-8.439	0.305	-0.933	-3.448	–
Kharchenko et al.	2016	279.942	-8.417	–	–	–	–
Dias et al.	2014	279.95	-8.417	–	-0.3	-3.99	–
Kharchenko et al.	2013	279.949	-8.415	–	-4.14	-7.01	–
Dias et al.	2002	279.95	-8.417	–	-0.3	-3.99	–

💡 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–	2.78	2.665	0.52	385	-0.220	394	–	–
Hunt & Reffert	2024	–	–	–	–	–	646⁽¹⁾	–	–
Cavallo et al.	2024	1.87	2.82	–	214	-0.220	–	–	–
He et al.	2023	3.02	4.55	–	126	–	–	–	–
Hunt & Reffert	2023	2.78	2.81	0.52	65	–	–	–	–
Just et al.	2023	–	–	–	385	–	143	–	–
Cantat-Gaudin & Anders	2020	3.00	–	–	–	–	–	–	–
Soubiran et al.	2018	3.00	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.00	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.34	2.52	–	385	–	–	–	–
Kharchenko et al.	2013	1.34	2.52	–	385	–	–	–	–
Dias et al.	2002	1.34	2.52	–	385	–	–	–	–

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

Visualization

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