The RAVE Survey: Constraining the Local Galactic Escape Speed

  title={The RAVE Survey: Constraining the Local Galactic Escape Speed},
  author={M. C. Smith and Gregory R. Ruchti and Amina Helmi and Rosemary F. G. Wyse and Jon P. Fulbright and Kenneth C. Freeman and Julio F. Navarro and George Seabroke and Matthias Steinmetz and M. E. Williams and Olivier Bienaym{\'e} and James Binney and J. Bland-Hawthorn and Walter Dehnen and Brad K. Gibson and Gerry Gilmore and E. K. Grebel and U. Munari and Quentin A. Parker and Ralf-Dieter Scholz and Arnaud Siebert and Fred G. Watson and Toma{\vz} Zwitter},
  journal={Proceedings of the International Astronomical Union},
  pages={137 - 137}
Abstract We report new constraints on the local escape speed of our Galaxy. Our analysis is based on a sample of high velocity stars from the RAVE survey and two previously published datasets (the Geneva-Copenhagen survey and the Beers et al. catalogue of metal-poor stars). We use cosmological simulations of disk galaxy formation to motivate our assumptions on the shape of the velocity distribution, allowing for a significantly more precise measurement of the escape velocity compared to… 

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