Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
The early F-type stars - Refined classification, confrontation with Stromgren photometry, and the effects of rotation
The classification for early F-type stars in the MK spectralclassification system presented by Gray and Garrison (1987) is refined.The effect of rotation on spectral classification and ubvy-betaphotometry of early F-type stars is examined. It is found that theclassical luminosity criterion, the 4417 A/4481 A ratio givesinconsistent results. It is shown that most of the stars in the DeltaDelphini class of metallic-line stars are either normal or areindistinguishable from proto-Am stars. It is suggested that thedesignation Delta Delphini should be dropped. The classifications arecompared with Stromgren photometry. The effects of rotation on thedelta-c1 index in the early-F field dwarfs is demonstrated.
| A finding list of early-type stars near the south galactic pole.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..338S&db_key=AST
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
| Costellazione: | Scultore |
| Ascensione retta: | 23h43m07.17s |
| Declinazione: | -36°47'05.9" |
| Magnitudine apparente: | 7.454 |
| Distanza: | 152.672 parsec |
| Moto proprio RA: | 14.1 |
| Moto proprio Dec: | 4.3 |
| B-T magnitude: | 7.8 |
| V-T magnitude: | 7.483 |
Cataloghi e designazioni:
|
