On the mass of nova DQ Hercules (1934)

Details On the mass of nova DQ Hercules (1934) On the mass of nova DQ Hercules (1934)

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410..357h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 410, no. 1, p. 357-364.

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49

Eclipsing Binary Stars, Novae, Stellar Models, White Dwarf Stars, Computational Astrophysics, Emission Spectra, Light Curve, Stellar Mass, Stellar Mass Accretion, Stellar Spectrophotometry, Stellar Systems

Scientific paper

Time-resolved high-resolution CCD spectroscopy covering two 4.6-hr orbits of DQ Her are presented. Analysis of the Na I 8183,8195 A absorption doublet yields estimates of the secondary star's projected orbital velocity and rotational broadening. The estimate of the projected orbital velocity is refined using models of the effects of irradiation on the secondary star, producing a final value of 227 +/- 10 km/s. The stellar masses are estimated at M1 = 0.60 +/- 0.07 and M2 = 0.40 +/- 0.05 solar mass.

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