PIECKA, Martin a Ernst PAUNZEN. Aggregates of clusters in the Gaia data. Astronomy and Astrophysics. EDP Sciences, 2021, roč. 649, May, s. "A54", 12 s. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202040139. |
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@article{1775039, author = {Piecka, Martin and Paunzen, Ernst}, article_number = {May}, doi = {http://dx.doi.org/10.1051/0004-6361/202040139}, keywords = {open clusters and associations: general; astrometry}, language = {eng}, issn = {0004-6361}, journal = {Astronomy and Astrophysics}, title = {Aggregates of clusters in the Gaia data}, url = {https://doi.org/10.1051/0004-6361/202040139}, volume = {649}, year = {2021} }
TY - JOUR ID - 1775039 AU - Piecka, Martin - Paunzen, Ernst PY - 2021 TI - Aggregates of clusters in the Gaia data JF - Astronomy and Astrophysics VL - 649 IS - May SP - "A54" EP - "A54" PB - EDP Sciences SN - 00046361 KW - open clusters and associations: general KW - astrometry UR - https://doi.org/10.1051/0004-6361/202040139 N2 - Context. The precision of the parallax measurements by Gaia is unprecedented. As of Gaia Data Release 2, the number of known nearby open clusters has increased. Some of the clusters appear to be relatively close to each other and form aggregates, which makes them interesting objects to study.Aims. We study the aggregates of clusters which share several of the assigned member stars in relatively narrow volumes of the phase space.Methods. Using the most recent list of open clusters, we compare the cited central parallaxes with the histograms of parallax distributions of cluster aggregates. The aggregates were chosen based on the member stars which are shared by multiple clusters.Results. Many of the clusters in the aggregates have been assigned parallaxes which coincide with the histograms. However, clusters that share a large number of members in a small volume of the phase space display parallax distributions which do not coincide with the values from the literature. This is the result of ignoring a possibility of assigning multiple probabilities to a single star. We propose that this small number of clusters should be analysed anew. ER -
PIECKA, Martin a Ernst PAUNZEN. Aggregates of clusters in the Gaia data. \textit{Astronomy and Astrophysics}. EDP Sciences, 2021, roč.~649, May, s.~''A54'', 12 s. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202040139.
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