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| The spectrum of the symbiotic nova HBV 475 in 1969. II Results are presented of a complete analysis of the first spectroscopicobservations of the symbiotic nova HBV 475 (= V1329 Cyg) obtained withthe 183-cm reflector of the Dominion Astrophysical Observatory inOctober-December 1969. Data show the presence of three main linesystems: (1) narrow lines with a wide ionization range, up to doublyionized CNO, showing a velocity gradient; (2) a broad line system whichincludes the strongest emission lines of H, He II, forbidden Ne III lineand forbidden O III line, which displays a complex structure with up to10 individual components; and (3) a WR-type line system which includesbroad and shallow emissions corresponding to those observed in WN5stars, with a velocity expansion of 2300 km/sec. A binary model of HBV475 is developed, in which the narrow lines are formed in differentregions of the cool giant's wind ionized by the radiation of the hotstar.
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Datos observacionales y astrométricos
Constelación: | Cisne |
Ascensión Recta: | 20h10m09.36s |
Declinación: | +45°01'00.2" |
Magnitud Aparente: | 7.762 |
Distancia: | 298.507 parsecs |
Movimiento Propio en Ascensión Recta: | 3.2 |
Movimiento Propio en Declinación: | 1.3 |
B-T magnitude: | 7.626 |
V-T magnitude: | 7.751 |
Catálogos y designaciones:
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