The Emission Line Spectrum of Nova Sagittarius 1993 IN the 35-DAY after Maximum

Details The Emission Line Spectrum of Nova Sagittarius 1993 IN the 35-DAY after Maximum The Emission Line Spectrum of Nova Sagittarius 1993 IN the 35-DAY after Maximum

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.269l...7l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 269, NO. 1/JUL1, P. L7, 1994

Astronomy and Astrophysics

Astronomy

Scientific paper

We report spectroscopic observations of Nova Sgr 1993, obtained between 20 and 35 d after maximum light following the outburst in 1993 September. We compile published spectra along with our observations to determine the spectroscopic evolution of the nova. On the Tololo classification system, the object appears to have evolved from a `Fe ii class' nova to an `He/N class' nova within 20 d after maximum. [Fe iii lines appeared within 34 d. The likely evolutionary sequence in the first 35 d is either Pfe,heN? or Pfe,nN?. The uncertainty in the classification is due to a lack of spectral coverage. Photometric observations indicate the nova to have faded on a time-scale t3 of 33 d, and a flux distribution increasingly dominated by Ha emission inthefirst40 d. Key words: stars: individual: Nova Sgr 1993 - novae, cataclysmic variables.

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