Document Type

Article

Publication Date

1-1-2014

Department

Physical & Earth Sciences

Abstract

The 22 yr light curve of HR Lyr, acquired with a typical cadence of 2-6 days, is examined for periodic and quasi-periodic variations. No persistent periodicities are revealed. Rather, the light curve variations often take the form of nearly linear rises and falls having typical e-folding times of about 100 days. Occasional ~0.6 mag outbursts are also seen, with properties similar to those of small outbursts found in some nova-like cataclysmic variables. When the photometry is formed into yearly averages, a decline of 0.012 ± 0.005 mag yr–1 is apparent, consistent with the fading of irradiation-induced $\dot{M}$ following the nova. The equivalent width of Hα is tabulated at three epochs over the interval 1986-2008 in order to compare with a recent result for DK Lac in which Hα was found to be fading 50 yr after the nova. However, our results for such a fading in HR Lyr are inconclusive. © 2014. The American Astronomical Society. All rights reserved.

DOI

10.1088/0004-6256/147/5/105

Volume

147

Issue

5

Publication Title

Astronomical Journal

ISSN

0004-6256

Comments

© 2014 American Astronomical Society.

Henden, A., Kafka, S., et al. 2014. "The 1991-2012 Light Curve of the Old Nova HR LYRAE." Astronomical Journal. 147(5). doi:10.1088/0004-6256/147/5/105

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