WDJ220838.73+454434.04: a White Dwarf Companion in the AR Lacertae System
Open Access
- 15 June 2022
- journal article
- Published by American Astronomical Society in Research Notes of the AAS
- Vol. 6 (6), 127
- https://doi.org/10.3847/2515-5172/ac780a
Abstract
We present WDJ220838.73+454434.04 (hereafter WD2208+454), a wide, co-moving white dwarf companion to the eclipsing binary system, AR Lacertae. The companion was discovered through the Backyard Worlds: Planet 9 citizen science collaboration. It has a separation of 21.″9 on the sky from the central eclipsing pair, translating to a projected separation of ∼930 au. We present a review of the physical properties and orbital parameters of this new addition to the system.Funding Information
- National Science Foundation (2007068)
- National Science Foundation (2009136)
- National Science Foundation (2009177)
- UKRI ∣ Science and Technology Facilities Council (ST/R003726/1)
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