Time Series Photometry of DQ Herculis: An Updated Ephemeris
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Physics and Astronomy
Date of Award
Spring 2021
Abstract
Cataclysmic variable Old Nova DQ Herculis (N1934) is an eclipsing binary with anorbital period of 4h39m and is a prototype for a fast spinning accreting magnetic white dwarf. The white dwarf is blocked from our line of sight due to the extreme inclination angle of the accretion disk. DQ Herculis is known for its 71 second oscillation found in the light curve. We present a new photometric study of the eclipse and 71 second oscillations of DQ Herculis. With observations provided to us by the AAVSO and CBA, along with observations done at McDonald Observatory and the SARA consortium, we calculate an updated O-C phase diagram along with updated ephemerides for the eclipse and 71 second signals. We also report new eclipse timings.
Advisor
Matt A. Wood
Subject Categories
Astrophysics and Astronomy | Physical Sciences and Mathematics
Recommended Citation
Morales, John Francisco, "Time Series Photometry of DQ Herculis: An Updated Ephemeris" (2021). Electronic Theses & Dissertations. 310.
https://digitalcommons.tamuc.edu/etd/310
