Simultaneous UBVRI photometry of Nova DQ Herculis (1934)

Details Simultaneous UBVRI photometry of Nova DQ Herculis (1934) Simultaneous UBVRI photometry of Nova DQ Herculis (1934)

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...224...42s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 224, no. 1-2, Oct. 1989, p. 42-48.

Astronomy and Astrophysics

Astrophysics

12

Cataclysmic Variables, Novae, Stellar Color, Stellar Spectrophotometry, Temporal Resolution, Faint Objects, Nebulae, Secular Variations, Stellar Oscillations, Ubv Spectra, White Dwarf Stars

Scientific paper

Simultaneous five color (UBVRI) photometry with a time resolution of 1 s is presented for the old nova DQ Herculis. It is found that all of the color indices for DQ Her become more positive during eclipse. No significant indication of a secular variation are found. It is shown that flickering activity with timescales below 100 s is less than 1 pct rms of the mean system brightness. The 71-s oscillation, for which no color-dependent shift was detected, is mainly modulated by geometrical changes.

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