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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 A1.

The change in the position of α Cen A relative to 2024 January 1 (Δα = 0, Δδ = 0) computed using proper motion and parallax as seen from JWST’s L2 vantage point. Markers denote 10 day intervals and days of the year. As a reference, the red star denotes the date of the 2024 August JWST observations (first epoch). The inset plot zooms in near the 2024 August observation date with markers spaced in 5 day intervals. Details of the astrometry for α Cen are given in Appendix B and in R. Akeson et al. (2021).

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