Садржај
Слике
Уплоадјуј своје слике
DSS Images Other Images
Везани чланци
The nature of the Yale Common Proper Motion groups of stars
Attention is given to a large group of approximately 90 stars, twogroups of 20-30 stars, and 12 groups of a few stars each, taken from DDOsystem image tube spectral classification and intermediate bandphotometry for the Yale Common Proper Motion groups of 180 southernstars. Spectroscopic and photometric analyses of these groups haveindicated a very scattered Pop I main sequence in their color-magnitudediagrams. Distance moduli of 5 or less were derived from the averagespectroscopic parallaxes, in keeping with the proper motion amplitude of0.1 arcsec/year. The main sequence of each group shows scatter whenplotted in an HR diagram, indicating that they are probably nothomogeneous groups of stars sharing common physical origins.
|
Додај нови чланак
Линкови у сродству са темом
Додај нови линк
Чланови следећих група \:
|
Посматрања и Астрометриски подаци
| Сазвежђа: | Јужна круна |
| Ректацензија: | 18h23m57.77s |
| Deклинација: | -45°08'14.2" |
| Apparent магнитуда: | 8.312 |
| Даљина: | 230.947 parsecs |
| Proper motion RA: | -12.1 |
| Proper motion Dec: | 22.7 |
| B-T magnitude: | 9.721 |
| V-T magnitude: | 8.429 |
Каталог и designations:
|
