9/5/2023 0 Comments Eclipse neon 2 square tabs![]() ![]() To reduce this impact on our ranking, we cap the rms metric at the 95th percentile, which reduces the false positive rate while still retaining the effectiveness of the metric. Many sources have especially high rms values due to instrumental effects. We find that the 3σ maximum occurrence rate of WD 1145+017-like transiting objects is |$\le 0.5)$|. We perform synthetic injections of the light curve of WD 1145+017, a system with known transiting debris, to test our ability to recover similar systems. We also detect eight new eclipsing systems five are new discoveries, and three were previously known spectroscopic binaries. We detect 40 new pulsators: 36 have hydrogen-dominated atmospheres (DAVs), including one possible massive DAV, and four are helium-dominated pulsators (DBVs). With our ranking algorithm, we identify 48 new variable WDs in archival GALEX observations. ![]() Although GALEX observations have short baselines (≤30 min), we identify intrinsic variability in sources as faint as Gaia G = 20 mag. By implementing a system of weighted metrics, we select sources with variability due to pulsations and eclipses. We use gphoton, a publicly available calibration/reduction pipeline, to generate time-series photometry of WDs observed by GALEX. We search for photometric variability in more than 23 000 known and candidate white dwarfs (WDs), the largest ultraviolet survey compiled for a single study of WDs. ![]()
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