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DECam Multimessenger Astrophysics Pipeline. I. From Raw Data to Single-exposure Candidates

  • Authors: Shenming Fu, Thomas Matheson, Aaron Meisner, Yuanyuan Zhang, Sebastián Vicencio, Destry Saul

Shenming Fu et al 2024 The Astronomical Journal 168 .

  • Provider: AAS Journals

Caption: Figure 10.

OGLE variables in the Galactic Bulge in the r band: eclipsing variable OGLE-BLG-ECL-277767 (top; P = 0.406 day; 5 s exposures) and RR Lyrae variable OGLE-BLG-RRLYR-12257 (middle; P = 0.318 day; 50 s exposures) with the original light curves (top, middle) and the phase-folded version (bottom; we use the period value from OGLE to shift the data points). For the RR Lyrae variable, after the direct image flux (totFlux) cut mentioned earlier and a cut on significant outliers, in the bottom row we also remove outliers in the difference image flux (psFlux) by using a 3σ cut around the median, and remove data points that have significantly large error bars (1/10 of the light-curve amplitude) to produce light curves cleaner than in the top row. In the difference images, the annular rings around bright stars are mainly caused by saturation, but they do not affect our targets. The observing condition metrics are estimated from the header information of instcal, as these are not included in qcInv. The guider transparency is not available for the top panel exposures, and we give the airmass ﹩\sec (z)﹩ instead; the sky brightness shows a similar trend to the airmass.

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