Contingut
Imatges
Carregar la teva Imatge
DSS Images Other Images
Articles Relacionats
Absolute luminosity calibration of Stroemgren's 'intermediate group'
A relation defining the luminosity index for Stroemgren's (1966)intermediate group (A0 to A3 stars) in terms of absolute magnitude iscalibrated using a method based on the principle of maximum likelihood.This relation is also calibrated for the case when the 'a' index iscorrected for reddening. For both relations, calculations are made ofthe magnitude dispersion, the mean velocity components and correspondingdispersion, and the precision of each parameter. The results are shownto be in fairly good agreement with Stroemgren's (1966) values, and arelation incorporating the corrected 'a' index is proposed formain-sequence stars. The absolute magnitudes obtained with a relation ofthe present type are compared with those derived from trigonometricparallaxes and with those obtained by Eggen (1972).
|
Enviar un nou article
Enllaços Relacionats
- - No s'ha trobat enllaços -
Enviar un nou enllaç
Membre dels grups següents:
|
Dades d'Observació i Astrometria
| Constel·lació: | Scorpius |
| Ascensió Recta: | 16h07m13.30s |
| Declinació: | -10°19'28.7" |
| Magnitud Aparent: | 9.747 |
| Moviment propi RA: | -34.5 |
| Moviment propi Dec: | -27 |
| B-T magnitude: | 10.483 |
| V-T magnitude: | 9.808 |
Catàlegs i designacions:
|
