Spectroscopic observations of the recurrent nova T Pyxidis during the 1967 maximum

Details Spectroscopic observations of the recurrent nova T Pyxidis during the 1967 maximum Spectroscopic observations of the recurrent nova T Pyxidis during the 1967 maximum

Jan 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969cokon..65..261c&link_type=abstract

Communications of the Konkoly Observatory, No. 65 (Vol. VI, 1), p. 261-270 (1969)

Computer Science

Scientific paper

Specroscopic observations of the recurrent nova T Pyx have been made at Asiago in the first months of 1967, during the slow decline of the star from maximum. The early spectra show wide emission lines of H, HeI, CII, NII, NIII, OIII, FeII, etc. with violetshifted absorption components. The mean expansion velocity derived from the dark lines is about 1800 km/s. Spectra taken in March and April indicate an increasing degree of ionization, as shown by the strengthening of the emission bands of HeII, NII, NIII, OIII. The absorption lines weaken or disappear. Although the forbidden lines of [OIII] and [FeX] 6374 are already present, the star has not yet reached its highest degree of ionization, as observed by Joy in 1944, when the observations were interrupted.

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