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Double White Dwarf Binaries in SDSS-V DR19: A Catalog of DA White Dwarf Binaries and Constraints on the Binary Population

  • Authors: Gautham Adamane Pallathadka, Vedant Chandra, Nadia L. Zakamska, Nicole R. Crumpler, Stefan M. Arseneau, Kareem El-Badry, Boris T. Gänsicke, Yossef Zenati, J.J. Hermes, Axel D. Schwope, Carles Badenes, Nicola Pietro Gentile Fusillo, Sean Morrison, Tim Cunningham, Priyanka Chakraborty, Gagik Tovmasian, Dmitry Bizyaev, Kaike Pan, Scott F. Anderson, Sebastian Demasi

Gautham Adamane Pallathadka et al 2026 The Astrophysical Journal 1002 .

  • Provider: AAS Journals

Caption: Figure 4.

Left: the Gaia color–magnitude diagram of our parent sample of WDs with hydrogen lines (blue) and DWD binary candidates (orange), with the cooling curves of a 0.3 M⊙ WD and a 0.6 M⊙ WD (A. Bédard et al. 2020). Middle: the mass distribution of the parent sample and the DWD binary candidates. Right: the temperature distribution of the parent sample and the DWD binary candidates. We use the mass and temperature of the WDs obtained using Gaia photometry (N. P. Gentile Fusillo et al. 2019, 2021).

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