Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
The calibration of the Stromgren photometric system for A, F and early G supergiants. I - The observational data
An empirical calibration of the Stromgren uvby-beta photometric systemfor the A, F, and early G supergiants is being derived. This paperexplains the observational program and the photometric reductiontechniques used and presents a catalog of new Stromgren photometry forover 600 A, F, and G supergiants.
| Estimation of spectral classifications for bright southern stars with interesting Stromgren indices
This paper investigates the degree of success with which uvby photometrycan be applied to predict spectral classifications for 947 A, F, and Gstars brighter than an apparent magnitude of 8.3 and with four-colorindices indicating some kind of interesting, unusual, or peculiarspectrum. One or several possible spectral classifications are estimatedfor each star from photometry alone, double stars are distinguished, andthe estimates are compared with published classifications. The resultsshow that the framework provided by uvby photometry can be extended toinclude most G and K stars, reddened stars, peculiar stars, and certaintypes of double star.
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
| Costellazione: | Centauro |
| Ascensione retta: | 13h45m31.93s |
| Declinazione: | -39°21'21.2" |
| Magnitudine apparente: | 7.757 |
| Distanza: | 180.18 parsec |
| Moto proprio RA: | -41.2 |
| Moto proprio Dec: | -11.4 |
| B-T magnitude: | 8.291 |
| V-T magnitude: | 7.802 |
Cataloghi e designazioni:
|
