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NASA’s Pandora SmallSat Mission: Simulating the Impact of Stellar Photospheric Heterogeneity and Its Correction

  • Authors: Benjamin V. Rackham, Aishwarya R. Iyer, Dániel Apai, Peter McGill, Yoav Rotman, Knicole D. Colón, Brett M. Morris, Emily A. Gilbert, Elisa V. Quintana, Jessie L. Dotson, Thomas Barclay, Pete Supsinskas, Jordan Karburn, Christina Hedges, Jason F. Rowe, David R. Ciardi, Jessie L. Christiansen, Trevor O. Foote, Thomas P. Greene, Kelsey Hoffman, Rae Holcomb, Aurora Y. Kesseli, Veselin B. Kostov, Nikole K. Lewis, James P. Mason, Gregory Mosby, Susan E. Mullally, Joshua E. Schlieder, Megan Weiner Mansfield, Luis Welbanks, Allison Youngblood

Benjamin V. Rackham et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 3.

Time series of inferred stellar parameters from fits to simulated Pandora observations of K-dwarf targets under four variability scenarios. The panels show the recovered photospheric temperature (Tphot), spot temperature (Tspot), spot filling factor (fspot), and stellar radius (R) as a function of time. Each point corresponds to a pre- or post-transit stellar spectrum from an individual 24 hr visit. Black boxes indicate the input (true) parameter values. Blue points show the posterior means from the two-component retrievals, with error bars denoting the 68% credible intervals. Orange points indicate datasets for which the one-component model is preferred, for which Tspot and fspot are not defined.

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