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The MIRI Excesses Around Degenerates (MEAD) Survey. II. A Probable Planet Detected via IR Excess around WD 0644+025

  • Authors: Sabrina Poulsen, John Debes, Ashley Messier, Érika Le Bourdais, Carl Melis, Misty Cracraft, Samuel Boucher, Mukremin Kilic, Scott Kenyon, Mark C. Wyatt, Seth Redfield, Patrick Dufour, Loic Albert, Susan E. Mullally, William T. Reach, Fergal Mullally, David A. Golimowski

Sabrina Poulsen et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 8.

Dust disk models fit to 10 and 15 μm excess detections for WD 0644+025. The N. P. Ballering et al. (2022) disk model requires 1.1 × 1018 g of material in 1–104 μm particles and is located between 0.86 and 1.29 R⊙. The intermediate disk model requires 1.3 × 1019 g of material in 1–104 μm particles and is located between 4.3 and 4.7 R⊙. The distant disk model is located between 645 and 710 R⊙ and has a mass of 1.6 × 1028 g of material. The planet model describes a 6.8MJup, 260 K planet at the same age as the white dwarf.

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