IC 2944

(MWSC 1957)

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0.95 UTI
0.75
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 106
Radius (P>50% members) 2.7 [arcmin]
  • CN 0.75 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very 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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IC 2944 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate* distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~2.55 kpc) differs significantly from the median photometric distance (~1.79 kpc).

Note: This object shares a large percentage of members with 3 later reported entries. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Silver sample.

Data
🔍 Search references for IC 2944 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 – 174.565 -63.366 0.393 -6.09 0.659 0.021
Hunt & Reffert 2024 174.599 -63.381 0.391 -6.08 0.694 5.006
Cavallo et al. 2024 174.55 -63.364 0.39 – – –
Hunt & Reffert 2023 174.599 -63.381 0.391 -6.08 0.694 5.006
Just et al. 2023 174.045 -62.946 – – – –
Jaehnig et al. 2021 174.837 -63.246 0.494 -5.937 0.79 –
Loktin & Popova 2017 174.585 -63.373 – -5.16 -2.39 -0.9
Kharchenko et al. 2016 174.045 -62.946 – – – –
Dias et al. 2014 174.583 -63.373 – -5.16 -2.39 –
Kharchenko et al. 2013 174.052 -62.95 – -7.04 -1.07 -0.9
Gozha et al. 2012 174.583 -63.373 – – – –
Piskunov et al. 2008 174.031 -62.951 – – – –
Kharchenko et al. 2007 174.58 -63.37 – 0.24 – –
van den Bergh 2006 174.585 -63.373 – – – –
Kharchenko et al. 2005 174.03 -62.95 – -6.2 -1.17 –
Kharchenko et al. 2003 174.03 -62.95 – -5.41 -0.43 –
Chen et al. 2003 174.213 -63.059 – -5.39 0.04 -1.0
Dias et al. 2002 174.583 -63.373 – -5.16 -2.39 -2.41
Dambis 1999 174.585 -63.373 – – – –

💡 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 – – – – – 308* – –
Cavallo et al. 2024 2.48 1.00 – 15 -0.060 – – –
Hunt & Reffert 2023 2.37 1.11 1.36 4 – – – –
Just et al. 2023 – – – 2 – 414 – –
Jaehnig et al. 2021 2.03* – – – – – – –
Loktin & Popova 2017 1.79 0.99 – 7 – – – –
Kharchenko et al. 2016 2.10 1.35 – 2 – – – –
Kharchenko et al. 2013 2.10 1.35 – 2 – – – –
Gozha et al. 2012 1.79 – – 7 – 2692 – –
Piskunov et al. 2008 1.79 0.99 – 8 – – – –
van den Bergh 2006 1.79 0.99 – 7 – – – –
Kharchenko et al. 2005 1.79 0.99 – 8 – – – –
Kharchenko et al. 2003 1.79 0.99 – – – – – –
Chen et al. 2003 1.79 – – 0 – – – –
Dias et al. 2002 1.79 0.99 – 7 – – – –
Dambis 1999 2.07 1.10 – 3 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
VDBH 121 100.0 174.69 -63.4 0.4 -6.01 0.65 0.02 0.7
CWWDL 864 6.6 174.28 -63.27 0.39 -6.15 0.9 4.55 0.23
VVV 005 5.7 174.74 -63.47 0.4 -5.95 0.51 -45.44 0.0

💡 Note: The % column shows the percentage of members that IC 2944 shares with each listed object.

Visualization
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IC 2944 UCC
IC 2944 HUNT23
Galactocentric position diagram