Precise Measures of Orbital Period, Before and After Nova Eruption for QZ Aurigae

Abstract

For the ordinary classical nova QZ Aurigae (which erupted in 1964), we report 1317 magnitudes from 1912--2016, including four eclipses detected on archival photographic plates from long before the eruption. We have accurate and robust measures of the orbital period both pre-eruption and post-eruption, and we find that the orbital period decreased, with a fractional change of -290.71+-0.28 parts-per-million across the eruption, with the orbit necessarily getting smaller. Further, we find that the light curve outside of eclipses and eruption is flat at near B=17.14 from 1912--1981, whereupon the average light curve starts fading down to B=17.49 with large variability. QZ Aur is a robust counter-example against the Hibernation model for the evolution of cataclysmic variables, where the model requires that all novae have their period increase across eruptions. Large period decreases across eruptions can easily arise from mass imbalances in the ejecta, as are commonly seen in asymmetric nova shells.

arXiv commentMNRAS in press, 24 pages, 5 tables, 6 figures

References in corpus (22)

• Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (Seventh edition)
• The Evolution of Cataclysmic Variables as Revealed by their Donor Stars
• An Extended Grid of Nova Models: II. The Parameter Space of Nova Outbursts
• UBVRI Photometric Standard Stars Around the Celestial Equator: Updates and Additions
• Optical Imaging of Nova Shells and the Maximum Magnitude-Rate of Decline Relationship
• The Thermonuclear Runaway and the Classical Nova Outburst
• The Distances to Novae As Seen By Gaia
• BK Lyncis: The Oldest Old Nova?... And a Bellwether for Cataclysmic-Variable Evolution
• Testing the disk instability model of cataclysmic variables
• Classical Novae as a Probe of the Cataclysmic Variable Population
• KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989
• When does an old nova become a dwarf nova? Kinematics and age of the nova shell of the dwarf nova AT Cnc
• The Change of the Orbital Periods Across Eruptions and the Ejected Mass For Recurrent Novae CI Aquilae and U Scorpii
• Eclipses During the 2010 Eruption of the Recurrent Nova U Scorpii
• GK Per (Nova Persei 1901): HST Imagery and Spectroscopy of the Ejecta, and First Spectrum of the Jet-Like Feature
• Accurate Pre-Eruption and Post-Eruption Orbital Periods for the Dwarf/Classical Nova V1017 Sgr
• Nova Aquilae 1918 (V603 Aql) Faded by 0.44 mag/century from 1938-2013
• The structure of a recent nova shell as observed by ALMA
• All Known Hot RCB Stars Are Fading Fast Over the Last Century
• The KIC 8462852 Light Curve From 2015.75 to 2018.18 Shows a Variable Secular Decline
• On Orbital Period Changes in Nova Outbursts
• Measuring the Expansion and Age of the Nova Shell IPHASXJ210204.7+471015

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• Review of light curves of novae in the modified scales. I. Recurrent novae
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