Variability type classification of multi-epoch surveys

Details Variability type classification of multi-epoch surveys Variability type classification of multi-epoch surveys

2009-01-19

arxiv.org/abs/0901.2835v1

AIP Conf.Proc.1082:257,2008

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

6 pages, 2 figures. Version with figures as sent to the Editor/AIP (though not as published). Minor corrections made

Scientific paper

10.1063/1.3059058

The classification of time series from photometric large scale surveys into variability types and the description of their properties is difficult for various reasons including but not limited to the irregular sampling, the usually few available photometric bands, and the diversity of variable objects. Furthermore, it can be seen that different physical processes may sometimes produce similar behavior which may end up to be represented as same models. In this article we will also be presenting our approach for processing the data resulting from the Gaia space mission. The approach may be classified into following three broader categories: supervised classification, unsupervised classifications, and "so-called" extractor methods i.e. algorithms that are specialized for particular type of sources. The whole process of classification- from classification attribute extraction to actual classification- is done in an automated manner.

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