Spectroscopy of PU Vulpeculae, the novalike object Kuwano, in 1981-1983

Details Spectroscopy of PU Vulpeculae, the novalike object Kuwano, in 1981-1983 Spectroscopy of PU Vulpeculae, the novalike object Kuwano, in 1981-1983

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..284k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Apr. 1984, p. 284-292) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Mar.-Apr

Astronomy and Astrophysics

Astronomy

4

Astronomical Spectroscopy, Novae, Stellar Spectra, Absorption Spectra, H Beta Line, Microdensitometers, Radial Velocity, Visible Spectrum

Scientific paper

Spectroscopic data gathered on the object PU Vul at 44 A/m dispersion in the 3800-5000 A range from 1981-83 are reported, together with calculated magnitudes and radial velocities. The radial velocity varied from 25 km/sec to -40 km/sec and returned to positive velocities over the interval. The change to a negative velocity occurred simultaneously with the enhancement of Ti II and Sc II lines, followed by brightening and deepening of the hydrogen lines. The Zr II, Ce II and S II lines also became stronger and the Fe I line faded. The object, in effect, changed from an F8 to an F3-4 classification. The possibility that the changes are attributable to the injection of new matter into the stellar envelope of a binary companion is noted.

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