Berkeley 34

(Biurakan 13; MWSC 1058; OCL 543)

0.70 UTI

0.8

C_N

1.0

C_dens

0.75

C_C3

0.48

C_lit

1.0

C_dup

N₅₀ (P>50% members) 240

Stellar density (N₅₀/rad) 31.5 [N/pc²]

C3 classification AB

C_N 0.8 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.48 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Berkeley 34 is a rich, very dense object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is poorly studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Very distant Moderate extinction Massive Near-solar metallicity Old Contains BSS

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.15 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.15 (50th percentile).

Data

🔍 Search references for Berkeley 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–	105.097	-0.236	0.169	-1.347	0.183	83.132
Zhang et al.	2024	105.094	-0.237	–	–	–	–
Hunt & Reffert	2024	105.094	-0.237	0.158	-1.292	0.176	73.329
Cavallo et al.	2024	105.1	-0.235	0.148	–	–	–
Hunt & Reffert	2023	105.094	-0.237	0.158	-1.292	0.176	73.329
Just et al.	2023	105.083	-0.234	–	–	–	–
Jadhav & Subramaniam	2021	105.097	-0.239	–	–	–	–
Cantat-Gaudin et al.	2020	105.097	-0.239	0.097	-1.336	0.175	–
Cantat-Gaudin & Anders	2020	105.097	-0.239	0.097	-1.336	0.175	–
Bica et al.	2019	105.093	-0.235	–	–	–	–
Cantat-Gaudin et al.	2018	105.097	-0.239	0.097	-1.336	0.175	–
Sampedro et al.	2017	105.096	-0.232	-0.47	1.63	–	–
Kharchenko et al.	2016	105.083	-0.234	–	–	–	–
Kharchenko et al.	2013	105.09	-0.235	–	-2.68	-2.16	–
Bukowiecki et al.	2011	105.092	0.237	–	–	–	–
Dias et al.	2002	105.096	-0.232	–	-2.68	-2.16	–
Lynga	1987	105.093	-0.258	–	–	–	–

💡 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–	7.28	1.48	2.4	2399	-0.218	1012	–	2
Zhang et al.	2024	–	–	–	–	-0.216⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	463⁽¹⁾	–	–
Cavallo et al.	2024	4.81	1.80	–	550	-0.220	–	–	–
Hunt & Reffert	2023	5.12	1.38	2.40	193	–	–	–	–
Just et al.	2023	–	–	–	2818	–	1012	–	–
Jadhav & Subramaniam	2021	7.62	1.64	–	2399	–	5030	–	2⁽¹⁾
Cantat-Gaudin et al.	2020	7.62	1.64	–	2399	–	–	–	–
Kounkel et al.	2020	4.96	1.54	–	1820	–	–	–	–
Cantat-Gaudin & Anders	2020	7.92	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	7.92	–	–	–	–	–	–	–
Kharchenko et al.	2016	7.28	1.42	–	2818	–	–	–	–
Kharchenko et al.	2013	7.28	1.42	–	2818	–	–	–	–
Bukowiecki et al.	2011	7.69⁽¹⁾	1.48	–	2239	–	–	–	–
Dias et al.	2002	7.28	1.42	–	2818	–	–	–	–

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

Visualization

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