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Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging

  • Authors: Corey Beard, Paul Robertson, Jack Lubin, Eric B. Ford, Suvrath Mahadevan, Gudmundur Stefansson, Jason T. Wright, Eric Wolf, Vincent Kofman, Vidya Venkatesan, Ravi Kopparapu, Roan Arendtsz, Rae Holcomb, Raquel A. Martinez, Stephanie Sallum, Jacob K. Luhn, Chad F. Bender, Cullen H. Blake, William D. Cochran, Megan Delamer, Scott A. Diddams, Michael Endl, Samuel Halverson, Shubham Kanodia, Daniel M. Krolikowski, Andrea S. J. Lin, Sarah E. Logsdon, Michael W. McElwain, Andrew Monson, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Ryan C. Terrien

Corey Beard et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 11.

Pixel-by-pixel periodogram of the TESS photometry of GJ 251 during TESS Sector 20. Each plot corresponds to a pixel of the TESS CCD, and the solid blue line is the aperture used by the PDCSAP pipeline during the generation of the GJ 251 light curve. A gold star highlights the pixel that contains GJ 251. This plot can help us discover the source of the periodic variability seen in the GJ 251 light curve. It is clear that the ∼4 hr periodicity originates not from GJ 251 but from other, neighboring pixels, which we highlight in red. Consequently, we can rule out the signal as fast rotation of GJ 251.

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