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

Wong, Tin Long Sunny and van Roestel, Jan and Kupfer, Thomas and Bildsten, Lars (2021) An Outburst by AM CVn Binary SDSS J113732.32+405458.3. Research Notes of the AAS, 5 (1). Art. No. 3. ISSN 2515-5172.

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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.

Item Type:Article
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URLURL TypeDescription Paper
Wong, Tin Long Sunny0000-0001-9195-7390
van Roestel, Jan0000-0002-2626-2872
Kupfer, Thomas0000-0002-6540-1484
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
Funding AgencyGrant Number
Gordon and Betty Moore FoundationGBMF5076
Issue or Number:1
Record Number:CaltechAUTHORS:20210120-153458015
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Official Citation:Tin Long Sunny Wong et al 2021 Res. Notes AAS 5 3
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107607
Deposited By: Tony Diaz
Deposited On:21 Jan 2021 00:22
Last Modified:03 Feb 2021 22:47

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