Bayesian approach for matching multiple stellar observations

Gyöngyi Kerekes, Tamás Budavári, István Csabai

Research output: Contribution to journalConference article


The cross-identification of sources in separate catalogs is one of the most basic tasks in observational astronomy. Recently Budavari & Szalay (2008) formulated the problem in the probability theory, and laid down the statistical foundations of an extendable methodology. An application of the same Bayesian approach to stars is presented that, we know, can measurably move on the sky, and it is shown how to associate their observations. Models are studied on a sample of stars in the Sloan Digital Sky Survey, which allow for an unknown proper motion per object, and their improvements are shown over the simpler static model. The new models and conclusions are directly applicable to the upcoming surveys, whose data sets will be most likely dominated by stars in the region of the Galactic Plane.

Original languageEnglish
Article number012012
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - Jan 1 2010
Event5th Workshop of Young Researchers in Astronomy and Astrophysics - Budapest, Hungary
Duration: Sep 2 2009Sep 4 2009


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this