CNO abundances and hydrodynamic models of the nova outburst. IV - Comparison with observations

Details CNO abundances and hydrodynamic models of the nova outburst. IV - Comparison with observations CNO abundances and hydrodynamic models of the nova outburst. IV - Comparison with observations

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...208..819s&link_type=abstract

Astrophysical Journal, vol. 208, Sept. 15, 1976, pt. 1, p. 819-825.

Astronomy and Astrophysics

Astrophysics

24

Abundance, Carbon Isotopes, Nitrogen Isotopes, Novae, Oxygen Isotopes, Stellar Models, Astronomical Models, Bolometers, Hydrodynamics, Light Curve, Stellar Envelopes, Stellar Luminosity, Stellar Mass Ejection, Ultraviolet Spectroscopy

Scientific paper

A variety of observations of novae are discussed in light of theoretical models. It is proposed that the nearly constant bolometric luminosity of FH Ser originates in the nondegenerate hydrogen-burning region at the bottom of the hydrogen-rich envelope which remains after the primary ejection. The shift of the wavelength of peak emission from the visual to shortward of the ultraviolet is caused by the decrease of the photospheric radius of the remnant envelope as the bolometric luminosity stays nearly constant. The oscillations in the light curve of GK Per during the transition stage can be explained by a pulsation of the remnant envelope when it is larger than the semimajor axis of the binary system. The CNO overabundances in novae reported by various observers are strongly suggestive of the proposed nova mechanism. Implications of the upper limits on C-13 and N-15 found in DQ Her are discussed.

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