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| Paper: |
On-the-fly Catalogs for Time-Domain Surveys |
| Volume: |
485, Astronomical Data Analysis Software and Systems XXIII |
| Page: |
207 |
| Authors: |
Budavári, T.; Szalay, A. S. |
| Abstract: |
The next-generation repeatedly covering the accessible sky many
times require new observational strategies. Individual exposures are
noisy, which is why the images are traditionally coadded to obtain
deeper and the pipelines perform forced photometry to establish
the lightcurves. Here we explore an alternative online solution where
the catalogs are extracted for each individual observation with a low
threshold well under the noise level and the false detections are weeded
out incrementally. We find that the probability of detecting real
objects is comparable in the coadds and our statistical
methodology. Using a Bayesian approach we distinguishing between noise
peaks and true objects based on the measured fluxes and optionally their
celestial coordinates. The performance is demonstrated on simulations
that mimic the characteristics of the Large Synoptic Survey Telescope. |
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