GROUPINGS OF POPULATION I OBJECTS IN THE GALAXY
The distribution of Cepheids in the Galaxy is studied using a new catalogue of Cepheid distances in conjunction with the method of hierarchical clustering. The resulting delineation of Cepheid complexes is compared with those for other Population I objects: open clusters and OB-associations. Param...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Odessa I. I. Mechnykov National University
2017-04-01
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| Series: | Odessa Astronomical Publications |
| Online Access: | http://oap.onu.edu.ua/article/view/98240 |
| Summary: | The distribution of Cepheids in the Galaxy is studied using a new catalogue of Cepheid distances in conjunction with the method of hierarchical clustering. The resulting delineation of Cepheid complexes is compared with those for other Population I objects: open clusters and OB-associations. Parameters derived for complexes of Cepheids are very similar to those for open clusters and OB-associations: the typical dimension of first level groups is ∼0.2 kpc, while the size of complexes is ∼0.9 kpc. Mostly the complexes of different objects are spatially coincident, but not always. |
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| ISSN: | 1810-4215 |