VizieR Online Data Catalog: Anomaly detection in the ZTF DR3 (Malanchev+, 2021)

The ZTF is a 48-inch Schmidt telescope on Mount Palomar, equipped with a 47deg² camera, which allows rapid scanning of the entire north sky. The ZTF survey started on 2018 March and during its initial phase has observed around a billion objects (Bellm et al. 2019PASP..131a8002B).

In this work, we analysed data from the first 9.4 months of the ZTF survey, between 2018 March 17 and December 31 (58194=<MJD=<58483). This period includes data from ZTF private survey, thus having a better cadence than the rest of DR3.

Light curves from ZTF DR3 are spread over 1020 fields, with objects within the same field being sampled with a similar cadence - on average ~1d for the Galactic plane and ~3d for the Northern-equatorial sky. In order to minimize effects due to different cadences, we performed our analysis in three separate fields: 'M 31' (a part of ZTF field 695), which includes the Andromeda galaxy (Messier 1781), 'deep' (ZTF field 795), located far from the Galactic plane, and 'disk' (ZTF field 805), located in the Galaxy plane.

(1 data file).