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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 5.

The results from the Lomb–Scargle periodogram period search for WDs with large phase coverage in the RV curve. We show the best-fitting RV curve, along with the periodogram power. The best-fit period, marked with red dashed lines, is chosen where the power is at its maximum, and the 16th–84th percentile confidence interval, shown as gray shaded regions, is calculated from 5000 Monte Carlo realizations of the RV curve. For J085252.86+514246.63 we show the 2nd–97th percentile confidence interval. The green dotted lines show the periodogram power corresponding to 5% false-alarm probability.

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