The distribution of young open clusters in the Galactic plane suggests the existence of the outer ring R1R2' in the Galaxy. The solar position angle theta_b providing the best agreement between the observed and model distribution is theta_b=35 +\- 10 degrees. We compared the theta_b values derived from three different catalogues of open cluster and they appear to be consistent within the errors.
@article{arxiv.1602.01708,
title = {The R1R2' outer ring revealed by young open cluster data},
author = {Anna Mel'nik and Pertti Rautiainen and Elena Glushkova and Andrei Dambis},
journal= {arXiv preprint arXiv:1602.01708},
year = {2018}
}
Comments
7 pages, 2 figures, to be published in Baltic Astronomy. arXiv admin note: substantial text overlap with arXiv:1601.01282