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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 3.

Top: the measured SED of WD 0644+025 (black squares) compared to a DA cooling model with Teff = 6943 K and ﹩{\mathrm{log}}g﹩ = 8.56 (red squares). Bottom: the residuals between modeled and observed photometry in units of sigma. The observed JWST MIRI photometry is shown with blue squares, and archival photometry is shown with black squares. The red dashed line denotes a 3σ deviation from the model. The observed JWST MIRI photometry exceeds the expected photospheric flux by 3.6σ in F1000W and 7.3σ in F1500W.

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