Hercules stream

Hercules stream is a large moving group of stars that are trailing behind the local rate of galactic rotation and are heading further out in the disk. Members of this stream may sometimes be referred to as Hercules stars. This stream was first hypothesized to be the remnants of a cluster of stars that has evaporated over time, becoming gravitationally unbound. Alternatively, the Hercules stream may have been created as a resonant effect of the galactic bar at the center of the Milky Way.[1] This stream of stars has a space velocity component V equal to about −40 km/s.[2]

References

  1. ↑ Famaey, B.; Siebert, A.; Jorissen, A. (2008). "On the age heterogeneity of the Pleiades, Hyades, and Sirius moving groups". Astronomy & Astrophysics 483 (2): 453–459. arXiv:0712.1470. Bibcode:2008A&A...483..453F. doi:10.1051/0004-6361:20078979.
  2. ↑ Arifyanto, M. I.; Fuchs, B. (2006-04-02). "Fine structure in the phase space distribution of nearby subdwarfs". Astronomy & Astrophysics 449 (2): 533–538. arXiv:astro-ph/0512296. Bibcode:2006A&A...449..533A. doi:10.1051/0004-6361:20054355.
This article is issued from Wikipedia - version of the Wednesday, March 20, 2013. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.