Spectroscopic observations of Nova V443 Scuti 1989

Journal Article · Wed May 01 04:00:00 EDT 1991 · Astronomical Journal; (United States)

DOI:https://doi.org/10.1086/115808· OSTI ID:5550756

Rosino, L; Benetti, S; Iijima, T; Rafanelli, P; Della valle, M ^[1]

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1. Asiago, Osservatorio Astrofisico (Italy) European Southern Observatory, La Silla (Chile)

Nova V443 Scuti 1989 reached its maximum, of visual magnitude about 7.5, very likely on September 13-14, 1989, displaying in its early decline brightness fluctuations of relatively large amplitude with a periodicity of about 17 days. In October the spectrum was characterized by the presence of the Balmer emission lines and by those of Fe II, Na I, Ti II, O I, N II accompanied by two systems of displaced P Cyg absorptions, having an average velocity of about -710 and -1460 km/s. The transition phase took place in November, with the appearance of forbidden N II 5755 and O II 7319 -30 and with the O I 6300 - 6364 flash. In March 1990, the nova was found in the nebular phase with wide emission lines of H, He I, He II, and collisionally excited lines of forbidden N II, O II, O III, and Ne III. From April to July, the degree of ionization having further progressed, forbidden lines of Fe VI, Fe VII, A III, A IV, A V, Ca V, and possibly also of Fe X, emerged. 30 refs.

• OSTI ID: 5550756
• Journal Information: Astronomical Journal; (United States), Journal Name: Astronomical Journal; (United States) Vol. 101; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
BALMER LINES
BRIGHTNESS
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
INTERSTELLAR SPACE
IONIZATION
NOVAE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SPACE
SPECTRA
SPECTROSCOPY
STARS
VARIABLE STARS
VARIATIONS