Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz


IMPACT FACTOR 2018: 0.350

CiteScore 2018: 0.24

SCImago Journal Rank (SJR) 2018: 0.202
Source Normalized Impact per Paper (SNIP) 2018: 0.144

ICV 2017: 121.03

Open Access
Online
ISSN
2543-6376
See all formats and pricing
More options …
Volume 24, Issue 4

Issues

Details of the Spatial Structure and Kinematics of the Castor and Ursa Major Streams

S. V. Vereshchagin
  • Institute of Astronomy of the Russian Academy of Sciences (INASAN), 48 Pyatnitskaya st., Moscow 119017, Russian Federation
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ N. V. Chupina
  • Institute of Astronomy of the Russian Academy of Sciences (INASAN), 48 Pyatnitskaya st., Moscow 119017, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2017-02-18 | DOI: https://doi.org/10.1515/astro-2017-0244

Abstract

A list of the Castor stream members is compiled based on the data from various authors. The membership probabilities for some stars are revised based on the individual apex, multiplicity, observational errors, and peculiarity. The apex of the Castor moving group is determined using the apex diagram method. The parameters of the Castor and Ursa Major streams are compared and the positions of the two streams on the apex diagram are found to differ by 225°, implying that the two groups move in almost opposite directions. Stars of both moving groups are intermixed in space, the Castor stream occupies a smaller volume than the UMa stream and is located inside it. Our results can be useful for understanding the morphology of the Galactic disk in the Sun’s vicinity.

Keywords: Galaxy: solar neighborhood; open clusters and associations; moving groups: individual: Castor, Ursa Major

REFERENCES

About the article

Received: 2015-11-02

Accepted: 2015-11-30

Published Online: 2017-02-18

Published in Print: 2015-12-01


Citation Information: Open Astronomy, Volume 24, Issue 4, Pages 421–425, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0244.

Export Citation

© 2015 S. V. Vereshchagin et al., published by De Gruyter Open. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

Comments (0)

Please log in or register to comment.
Log in