Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
Possible membership for the 51-day Cepheid GY Sagittae in a new OB association New photometric and spectroscopic observations of the 51-day Cepheid GYSagittae and nearby OB stars are presented which confirm the PopulationI nature of the Cepheid and suggest its possible membership in ananonymous OB association. On the basis of agreement in spatial location,reddening, and evolutionary status, it appears that GY Sge is probably amember of a loose association consisting of at least 17 luminous starsat a common distance of 3.47 + or - 0.13 kpc. The equivalent B-starreddening of 1.29 + or - 0.06 derived for the Cepheid, together with theassumption of association membership, results in an intensity-meanabsolute magnitude of -6.34 + or -0.19.
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
Costellazione: | Freccia |
Ascensione retta: | 19h35m29.07s |
Declinazione: | +19°21'50.9" |
Magnitudine apparente: | 10.207 |
Moto proprio RA: | 1.3 |
Moto proprio Dec: | -4.5 |
B-T magnitude: | 12.437 |
V-T magnitude: | 10.392 |
Cataloghi e designazioni:
|