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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 20.

PCA results in the Bulge field (A. Saha et al. 2019), which includes many variable stars. We show visits 428030 (left) and 429041 (right) on CCD 28 in the r band, and plot the sources that have PC1 quantile larger than 0.5; the marker opacity is proportional to the PC1 quantile of each source. The corresponding exposure times in MJD are 57115.264 and 57116.403 (the interval is ∼27 hr). We annotate the objects recorded in SIMBAD (M. Wenger et al. 2000). Their stellar types can be identified by name. “OGLE BWC V154” corresponds to “OGLE-BLG-ECL-27776” studied earlier (light curves in Figure 10). “BMB” indicates AGB stars (V. M. Blanco et al. 1984), and “ISOGAL-P J180302.8-295938” is an AGB star (D. K. Ojha et al. 2003) as well. Some short-period stars were also captured because of the timing of their phases, e.g., those names beginning with “OGLE BLG-ECL.” The source detection depends on weather and instrumental conditions. The detected sources without annotation could be noise (especially near CCD edges or saturated stars), or previously uncataloged real objects.

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