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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 11.

Predicted period and RV semiamplitude distribution for the Type Ia progenitors in the simulated SDSS-V WD sample. The histograms in the top and right plots show the distribution of RV semiamplitude, K, and the period for Type Ia progenitors. We find that Type Ia progenitors are concentrated toward longer periods and thus relatively modest RV semiamplitudes, making them difficult to identify.

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