[vsnet-alert 6126] WZ Sge spectrum at Okayama Astrophysical Observatory

[Hajime BABA <hajime.baba@nao.ac.jp>]

Dear all,

Time-resolved spectroscopic observations taken by K. Sadakane,
Osaka-Kyoiku University were done between July 24 UT 13:50 and UT
16:50, at OAO 36-inch with coverage of 400-500nm.  A spectrum
taken about at the middle of the eclipses shows that He II 4686 A
is a strong emission with doubled profile.  The estimated peak
separation is about 14 A, but the peaks vary with the orbital
period.  The CIII - NIII complex at 4640 A is also in emission
with double peak.  On the other hand, H-beta shows both of
emission and absorption feature like P Cyg profile, which varies
with the orbital period.  Higher Balmer series H-gamma and H-delta
are broad absorption features, as is He I 4471 A.  More detailed
analysis is under way.

The emission feature resembles to the beginning of the 1978
outburst reported in IAUC 3311, and Ortolani et al. (1980) taken
at four days after maximum, but does not resemble the spectra
taken by K. Ayani at Bisei during the rising stage (vsnet-alert
6110), which shows no emission component around the wavelength of
HeII and C-N complex.


Best Regards,
Hajime BABA and Kozo Sadakane
VSNET Collaboration team

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp