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Open clusters
Galaxies
4
Open clusters and associations: general
4
Photometry
3
Age distribution
2
Astronomía
2
Astrophysics
2
Bifurcation (mathematics)
2
Charge coupled devices
2
Cluster computing
2
Colour-magnitude diagrams
2
Distance measurement
2
Galactic centre
2
Galaxies: star clusters
2
Galaxies: star clusters: general
2
Galaxy
2
General - techniques
2
Individual (Ruprecht 1) - open clusters
2
Johnson-Cousins photometry
2
Open cluster systems
2
Open clusters and associations: individual: Pismis 23, BH 222
2
Photometric
2
Pismis 23
2
Sagittarius arm
2
Solar neighbourhood
2
Sun
2
Techniques: photometric
2
Washington system
2
Associations
1
Associations (estrellas)
1
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1
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2
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3
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4
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5
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