Rapid oscillations in cataclysmic variables. I - The 71 second oscillation of DQ Herculis
1978; IOP Publishing; Volume: 224; Linguagem: Inglês
10.1086/156405
ISSN1538-4357
AutoresJ. Patterson, E. L. Robinson, R. E. Nather,
Tópico(s)Atomic and Molecular Physics
Resumoview Abstract Citations (85) References (37) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Rapid oscillations in cataclysmic variables. I. The 71 second oscillation of DQ Herculis. Patterson, J. ; Robinson, E. L. ; Nather, R. E. Abstract A photometric study of the 71-sec oscillation in the old nova DQ Her is presented. It is found that all timings of the oscillation maxima can be phased with a simple ephemeris, that the oscillation exhibits many details in its phase and amplitude variations around the binary orbit, and that the previously discovered oscillation phase shift in eclipse is indeed present. The multicolor observations indicate that the visible oscillation arises from reprocessing of the white dwarf's pulsed UV flux by the accretion disk. Eclipse timings are reported which show that a sinusoidal modulation with a period of about 14 yr is present in all timings since 1954. It is noted that this effect cannot be easily ascribed to either a distant companion or classical apsidal motion. Publication: The Astrophysical Journal Pub Date: September 1978 DOI: 10.1086/156405 Bibcode: 1978ApJ...224..570P Keywords: Astronomical Photometry; Eclipsing Binary Stars; Light Curve; Novae; Periodic Variations; Amplitudes; Colorimetry; Ephemerides; Long Term Effects; Orbital Elements; Phase Shift; Stellar Mass Accretion; Stellar Rotation; White Dwarf Stars; Astrophysics; Cataclysmic Variables:Oscillations; Eclipsing Binaries:Novae; Novae:Periods; Nova DQ Herculis; Nova Herculis 1934 full text sources ADS | data products SIMBAD (1) Related Materials (15) Part 2: 1979ApJ...233L..13P Part 3: 1979ApJ...234..978P Part 4: 1980ApJ...241..235P Part 5: 1981ApJ...243L..83P Part 6: 1981ApJS...45..517P Part 7: 1991PASP..103.1149P Part 8: 1992ApJ...392..233P Part 9: 1993PASP..105...59P Part 10: 1993PASP..105..779P Part 11: 1993PASP..105.1116P Part 12: 1998PASP..110..403P Part 13: 1998PASP..110..415P Part 14: 2002PASP..114..623K Part 15: 2004PASP..116..516P Part 16: 2011PASP..123..130P
Referência(s)