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Published January 2021 | Submitted + Published
Journal Article Open

An Outburst by AM CVn Binary SDSS J113732.32+405458.3

Abstract

We report the discovery of a one magnitude increase in the optical brightness of the 59.63 minutes orbital period AM CVn binary SDSS J113732.32+405458.3. Public g, r, and i band data from the Zwicky Transient Facility exhibit a subsequent decline over a 300 days period, while a few data points from commissioning show that the peak was likely seen. Such an outburst is likely due to a change in the state of the accretion disk, making this the longest period AM CVn binary to reveal an unstable accretion disk. The object is now back to its previously observed (by SDSS and PS-1) quiescent brightness that is likely set by the accreting white dwarf. Prior observations of this object also imply that the recurrence times for such outbursts are likely more than 12 yr.

Additional Information

© 2021. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2020 December 18; Accepted 2021 January 3 Published 2021 January 6. This research was funded by the Gordon and Betty Moore Foundation through Grant GBMF5076. This research was supported in part by the National Science Foundation under grant No. NSF PHY-1748958. Software: ipython/jupyter (Pérez & Granger 2007; Kluyver et al. 2016), matplotlib (Hunter 2007), NumPy (van der Walt et al. 2011), and Python from python.org.

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Submitted - 2012.10419.pdf

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Additional details

Created:
August 20, 2023
Modified:
October 23, 2023