Emission line eclipse phenomena in nova DQ Herculis /1934/

Details Emission line eclipse phenomena in nova DQ Herculis /1934/ Emission line eclipse phenomena in nova DQ Herculis /1934/

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238..955y&link_type=abstract

Astrophysical Journal, Part 1, vol. 238, June 15, 1980, p. 955-963.

Astronomy and Astrophysics

Astrophysics

66

Eclipsing Binary Stars, Emission Spectra, Line Spectra, Novae, Stellar Spectra, H Beta Line, H Gamma Line, Light Curve, Mathematical Models, Stellar Mass Accretion, White Dwarf Stars

Scientific paper

H-gamma, He II 4686 A, and H-beta emission lines were observed in DQ Her through an eclipse (phases 0.80-0.15). A total of 14 spectra with exposure times of 300 seconds were used to investigate phenomena in the eclispe of the emitting region by the red companion. The classical rotational disturbance of the He II 4686 A line is observed; it changes its velocity by over 600 km/s in 25 minutes during the eclipse. The eclipse duration is very long (0.11 of a cycle) and indicates a mass ratio near unity.

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