Contenuti
Immagini
Carica la tua immagine
DSS Images Other Images
Articoli relazionati
Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
| Physical parameters of pulsating variables with periods between one and three days. I - Photometry and metallicities
Based on a new set of observations in the Walraven VBLUW system,obtained at the European Southern Observatory, La Silla, Chile,Fe/H(VBLU) values of 57 pulsating variables, mostly with periods betweenone and three days,. are determined. The distribution of the metalabundances is shown to be essentially bimodal. All the variables withFe/H ratios of less than -0.4 were classified by Diethelm (1983) as RRdstars. They are identified as the galactic field counterpart of theCepheids in the same period range found in globular clusters.
|
Sottometti un nuovo articolo
Link relazionati
Sottometti un nuovo link
Membro dei seguenti gruppi:
|
Osservazione e dati astrometrici
| Costellazione: | Corona Australe |
| Ascensione retta: | 18h59m41.45s |
| Declinazione: | -40°37'21.8" |
| Magnitudine apparente: | 7.717 |
| Distanza: | 238.663 parsec |
| Moto proprio RA: | 3.6 |
| Moto proprio Dec: | -10.4 |
| B-T magnitude: | 7.701 |
| V-T magnitude: | 7.716 |
Cataloghi e designazioni:
|
