Author

B. Shappee

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Review Open access Sep 2026

A Search for Substellar Companions around A-type Stars: Pulsation Timing Detection of Eight Brown Dwarf Candidates and a Possible Habitable-zone Planet

Substellar companions are most often studied around solar-like or smaller stars, as the rapid rotation and variability of massive stars impede detection using traditional methods. An alternative technique, pulsation timing, uses photometry to measure light-travel-time variations—the time integral of the radial velocity...

Logan G. Wilson, D. Hey, B. Shappee et al. · Astrophysical Journal · 0 citations

Review Oct 2026

Extreme Stellar Death and Galaxy Feedback at z = 2: A Rest-frame Ultraviolet Characterization of the Strongly Lensed Superluminous Supernova 2025wny

We present photometric and spectroscopic follow-up observations of the strongly-lensed H-poor superluminous supernova (SLSN) 2025wny at $z = 2.0155$. We use integral-field Keck-II/KCWI spectroscopy to obtain rest-frame ultraviolet spectra spanning $11$ to $61$ days after maximum light. We use Pan-STARRS photometry to c...

Willem B. Hoogendam, David O. Jones, C. Storfer et al. · 0 citations