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astro-ph.SR2026
A Deep Precursor-Dip-Main Superoutburst Sequence in VW Hydri Observed with TESS: High-Cadence Constraints on the Thermal-Tidal Instability Model
Bisi Bernard Ogunwale, Shara Michael, Avi Shporer +2
We present 120s cadence TESS observations of three superoutbursts of the SU UMa-type dwarf nova VW Hydri. Two events (SO2 in Sectors 87+88 and SO3 in Sector 93) exhibit a pronounce…
astro-ph.SR2025
The TEQUILA catalog of variables in TESS full-frame images: Differential photometry light curves from the first two years of observations
Bisi Bernard Ogunwale, Yossi Zaguri, Volker Perdelwitz +4
Stellar variability and transient events provide critical insights into astrophysics, accelerated by missions like CoRoT, Kepler, and K2. NASA's Transiting Exoplanet Survey Satelli…
astro-ph.SR2025
An optical--mid-infrared color evolution tool for nova identification using WISE data
Joseph Onuegbu, Dafne Guetta, Yael Hillman +2
We present a novel approach for characterizing nova candidates by exploiting the infrared capabilities of the Wide-field Infrared Survey Explorer (WISE) catalog. We developed a pip…