Local standard of rest
In astronomy, the local standard of rest or LSR follows the mean motion of material in the Milky Way in the neighborhood of the Sun.[1] The path of this material is not precisely circular.[2] The Sun follows the solar circle (eccentricity e < 0.1 ) at a speed of about 220 km/s in a clockwise direction when viewed from the galactic north pole at a radius of ≈ 8 kpc about the center of the galaxy near Sgr A*, and has only a slight motion, towards the Solar apex, relative to the LSR.[3][4] The LSR velocity is anywhere from 202–241 km/s.[5]
In-line references and notes
- ^ Frank H Shu (1982). The Physical Universe. University Science Books. p. 261. ISBN 0-935702-05-9.
- ^ James Binney, Michael Merrifield (1998). Galactic Astronomy. Princeton University Press. p. 536. ISBN 0-691-02565-7.
- ^ Mark Reid; et al. (2008). "Mapping the Milky Way and the Local Group". In F. Combes, Keiichi Wada (ed.). Mapping the Galaxy and Nearby Galaxies. Springer. pp. 19–20. ISBN 0-387-72767-1.
{{cite book}}: Explicit use of et al. in:|author=(help) - ^ The Sun's peculiar motion relative to the LSR is 13.4 km/s. See, for example, Binney, J. & Merrifield, M. "§10.6". op. cit. ISBN 0-691-02565-7.
{{cite book}}: CS1 maint: multiple names: authors list (link) or E.E. Mamajek (2008). "On the distance to the Ophiuchus star-forming region". Astron. Nachr. AN 329: 12; §2.3. arXiv:0709.0505. Bibcode:2008AN....329...10M. doi:10.1002/asna.200710827. - ^ Steven R. Majewski1 (2008). "Precision Astrometry, Galactic Mergers, Halo Substructure and Local Dark Matter". Proceedings of IAU Symposium 248. 3. arXiv:0801.4927. Bibcode:2008IAUS..248..450M. doi:10.1017/S1743921308019790.
{{cite journal}}: CS1 maint: numeric names: authors list (link)
External links
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