VizieR Online Data Catalog: Vanishing and appearing sources using USNO data (Villarroel+, 2020)
Abstract
We examine the final 1691 candidates and compare the old and new images between the DSS1 and the SDSS, complementing the study with images in several bands in the STScI archive when the DSS1 images were not clear enough. At this stage, most of the candidates are the result of slightly offset coordinates, and the images reveal that the objects are present in both old and new images, with tiny offsets of the central point. About 200 of the 1691 candidates are caused by dead stripes in the SDSS. Finally, about 100 candidates remain, most with a point-like appearance. Nearly all these candidates are single-epoch observations in the Palomar Sky Survey (POSS-I), red band.
(2 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- February 2020
- DOI:
- 10.26093/cds/vizier.51590008
- Bibcode:
- 2020yCat..51590008V
- Keywords:
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- Positional data;
- Magnitudes;
- Surveys