Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
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.
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
| Costellazione: | Microscopio |
| Ascensione retta: | 20h30m25.79s |
| Declinazione: | -44°27'24.6" |
| Magnitudine apparente: | 8.95 |
| Distanza: | 81.235 parsec |
| Moto proprio RA: | 50.6 |
| Moto proprio Dec: | -96.4 |
| B-T magnitude: | 9.67 |
| V-T magnitude: | 9.01 |
Cataloghi e designazioni:
|
