Trifid

(NGC 6514; M20)

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0.73 UTI
0.76
CN
1.0
Cdens
0.38
CC3
0.75
Clit
1.0
Cdup
Nm (P>50%) 130
Core radius and density 0.6 [pc], 24 [pc-2]
C3 classification CB
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.38 Low quality
  • Clit 0.75 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Trifid is a rich, very dense object of low C3 quality. Its parallax locates it at a relatively close* distance, near the mid-plane, affected by low extinction. It is catalogued as a young cluster (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~1.25 kpc) differs significantly from the median photometric distance (~0.82 kpc).

Morales et al. (2013)
Classified as morphological type 'OC0' (emerging exposed cluster). Morphological flag: one or a few submm emission within the cluster area, but the submm emission is likely associated to the cluster.

Ahumada & Lapasset (2007)
Selected angular diameter from (1987, Lund Catalogue of Open Cluster Data).

Lada & Lada (2003)
Embedded cluster within âˆŧ2 Kpc of the Sun.

Data
🔍 Search references for Trifid 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– 270.621 -23.024 0.802 0.643 -1.685 -5.646
Jaehnig et al. 2021 270.656 -22.889 0.852 0.325 -1.699 –
Dib et al. 2018 270.645 -22.995 – – – –
Loktin & Popova 2017 270.675 -22.973 – 3.1 -0.21 -2.1
Sampedro et al. 2017 270.675 -22.972 – -0.83 -0.4 –
Joshi et al. 2016 270.645 -22.995 – – – –
Dias et al. 2016 270.675 -22.972 – -0.77 -0.7 -0.83
Dias et al. 2014 270.675 -22.972 – -0.77 -0.7 –
Morales et al. 2013 270.675 -22.972 – – – –
Gozha et al. 2012 270.675 -22.972 – – – –
Kharchenko et al. 2009 270.665 -22.973 – – – –
Piskunov et al. 2008 270.665 -22.973 – – – –
Kharchenko et al. 2007 270.67 -22.97 – 0.23 – -2.13
Ahumada & Lapasset 2007 270.675 -22.967 – – – –
van den Bergh 2006 270.596 -23.03 – – – –
Kharchenko et al. 2005 270.67 -22.97 – 2.63 -1.01 -2.13
Lada & Lada 2003 270.596 -23.03 – – – –
Kharchenko et al. 2003 270.58 -23.02 – 0.63 -2.75 –
Chen et al. 2003 270.641 -23.053 – -0.42 -3.02 -22.0
Dias et al. 2002 270.675 -22.972 – 0.06 -0.9 -22.0
Dambis 1999 270.675 -22.972 – – – –
Lynga 1987 270.588 -23.037 – – – 0.0
Sulentic et al. 1973 270.58 -23.032 – – – –
Alter et al. 1970 270.588 -23.037 – – – –

💡 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] Bfrac BSS
UCC 99999– 0.82 0.6 – 20 – 138 – 0
Jaehnig et al. 2021 1.18(1) – – – – – – –
Dib et al. 2018 1.09 – – 8 – – – –
Loktin & Popova 2017 0.82 0.60 – 23 – – – –
Joshi et al. 2016 1.09 1.05 – 8 – 138 – –
Dias et al. 2016 0.82 0.60 – 23 – – – –
Morales et al. 2013 2.70 – – – – – – –
Gozha et al. 2012 0.82 – – 23 – 138 – –
Kharchenko et al. 2009 0.82 0.60 – 19 – – – –
Piskunov et al. 2008 0.82 0.60 – 19 – – – –
Ahumada & Lapasset 2007 – 0.60 – 23 – – – 0
van den Bergh 2006 0.82 0.60 – 23 – – – –
Kharchenko et al. 2005 0.82 0.60 – 19 – – – –
Lada & Lada 2003 1.60 – – – – 190 – –
Kharchenko et al. 2003 0.82 0.60 – – – – – –
Chen et al. 2003 0.82 – – 20 – – – –
Dias et al. 2002 0.82 0.60 – 23 – – – –
Dambis 1999 0.83 0.68 – 8 – – – –
Lynga 1987 1.60 0.91 – – – – – –
Alter et al. 1970 1.60 – – – – – – –

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

Visualization
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Trifid UCC
Galactocentric position diagram