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Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of α Centauri A. I. Observations, Orbital and Physical Properties, and Exozodi Upper Limits

Authors: Charles Beichman, Aniket Sanghi, Dimitri Mawet, Pierre Kervella, Kevin Wagner, Billy Quarles, Jack J. Lissauer, Max Sommer, Mark Wyatt, Nicolas Godoy, William O. Balmer, Laurent Pueyo, Jorge Llop-Sayson, Jonathan Aguilar, Rachel Akeson, Ruslan Belikov, Anthony Boccaletti, Elodie Choquet, Edward Fomalont, Thomas Henning, Dean Hines, Renyu Hu, Pierre-Olivier Lagage, Jarron Leisenring, James Mang, Michael Ressler, Eugene Serabyn, Pascal Tremblin, Marie Ygouf, Mantas Zilinskas

Charles Beichman et al 2025 The Astrophysical Journal Letters 989 .

Provider: AAS Journals

Caption: Figure 18.

The planet candidate is initialized using the mean values from Table 4 with K_RV < 3 m s⁻¹, where the color-coded points denote the planet candidate with a prograde (blue/cyan) or retrograde (red/magenta) orbit. The top panel shows the lifetime t₉₉ when 99% of the test particles are unstable, while the bottom panel measures the fraction of stable particles for a given initial semimajor axis. The triangles denote upper limits for the stable fraction due to the finite number of trials (360) per semimajor axis. The light green region denotes the optimistic HZ, while the dark green represents the more conservative HZ.

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