A 99 minute Double-lined White Dwarf Binary from SDSS-V

@article{Chandra2021A9M,
  title={A 99 minute Double-lined White Dwarf Binary from SDSS-V},
  author={Vedant Chandra and Hsiang-Chih Hwang and Nadia L. Zakamska and Boris T. Gaensicke and J. J. Hermes and Axel Schwope and Carles Badenes and Gagik Tovmassian and Evan B. Bauer and Dan Maoz and Matthias R. Schreiber and Odette Toloza and K Inight and Hans–Walter Rix and Warren R. Brown},
  journal={The Astrophysical Journal},
  year={2021},
  volume={921}
}
We report the discovery of SDSS J133725.26+395237.7 (hereafter SDSS J1337+3952), a double-lined white dwarf (WD+WD) binary identified in early data from the fifth-generation Sloan Digital Sky Survey (SDSS-V). The double-lined nature of the system enables us to fully determine its orbital and stellar parameters with follow-up Gemini spectroscopy and Swift UVOT ultraviolet fluxes. The system is nearby (d = 113 pc), and consists of a 0.51 M ⊙ primary and a 0.32 M ⊙ secondary. SDSS J1337+3952 is a… 

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