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physical object > natural object > celestial body > collection of stars > star cluster > globular cluster > Oosterhoff Group globular cluster
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Oosterhoff Group globular cluster
subjectfact 
Oosterhoff Group globular clusterhas definition Globular cluster which differs in the period of transition between Bailey type ab and type c variables, the ratio of type c to type ab stars, in the metallicity of RR Lyrae stars, and in the mean period of the ab variables.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:56.0
is a kind of globular cluster2001-09-27 09:30:56.0
globular clusterhas diameter about 100 light-years2001-09-27 09:30:56.0
has orbit elongated, around the galactic center2001-09-27 09:30:56.0
is a part of halo2001-09-27 09:30:56.0
has age oldest stellar formation in the Galaxy2001-09-27 09:30:56.0
has number of stars 105 to 1062001-09-27 09:30:56.0
has catalog globular cluster catalog2001-09-27 09:30:56.0
has spectra low abundances of heavy elements2001-09-27 09:30:56.0
has velocity very high2001-09-27 09:30:56.0
has mass 104 to 106 Msun2001-09-27 09:30:56.0
has location most are in the halo some are members of the thick disk2001-09-27 09:30:56.0
physical objecthas angular momentum2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0
has material2001-09-27 09:27:27.0

Kinds of Oosterhoff Group globular cluster :

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