The final decline of Nova (V1974) Cygni 1992 and discovery of an associated extended emission nebulosity

Rosino L., Iijima T., Rafanelli P., Radovich M., Esenoglu H. H., Della Valle M.

ASTRONOMY & ASTROPHYSICS, cilt.315, sa.3, ss.463-466, 1996 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 315 Sayı: 3
  • Basım Tarihi: 1996
  • Dergi Adı: ASTRONOMY & ASTROPHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.463-466
  • İstanbul Üniversitesi Adresli: Evet

Özet

New spectroscopic observations of Nova Cygni 1992 (V1974 Cyg) carried out in 1994-95 have shown a progressive decrease of the ionization level, made evident by the fading or disappearance of the emission lines of [Ne V], [Ne III], [Fe VII], [Fe VI] and [O III], which were outstanding in the 1992-93 spectra. An echelle spectrum obtained at Asiago in October 1995 clearly shows the complexity of the velocity field of the nova.