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| Paper: |
The VVV-SkZ Pipeline: How to Get Automatic PSF-Fitting Photometry
from the VVV Survey |
| Volume: |
491, Fifty Years of Wide Field Studies in the Southern Hemisphere: Resolved Stellar Populations in the Galactic Bulge and the Magellanic Clouds |
| Page: |
83 |
| Authors: |
Mauro, F.; Bidin, C. M.; Chené, A.; Geisler, D.; Alonso-García, J.; Borissova, J.; Carraro, G. |
| Abstract: |
We present the VVV-SkZ_pipeline, a DAOPHOT-based pipeline
created to perform PSF-fitting photometry of the “VISTA Variables in the
Vía Láctea” (VVV) ESO Public Survey data. The pipeline avoids
repetitive interaction by the user, but still retains all the benefits,
power, and accuracy of the DAOPHOT suite. The pipeline provides an
astrometrized photometric catalog in the regime where other techniques
fail, for example, producing reliable results up to 2 magnitudes brighter
than the saturation limit. It also produces deeper and more accurate
photometry. These achievements allow the VVV-SkZ_pipeline to produce
data well anchored to the selected standard photometric system and allows
the study of important stellar phenomena (i.e., tip of the red giant
branch stars, red giant branches, horizontal branch morphology, RR Lyrae
stars), that may be beyond the reach using other methods of photometric
reduction. |
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