Advertisement

Bar Parameters from Hα Observations

  • O. Hernandez
  • C. Carignan
  • P. Amram
  • O. Daigle
Part of the Astrophysics and Space Science Library book series (ASSL, volume 319)

Abstract

The very first results of the application of the Tremaine-Weinberg (hereafter TW) method on Hα velocity fields are presented to find pattern speeds of galaxies. The technique is used for a sample of four barred galaxies and M51. For two of these, our results are very similar to those obtained using the same technique but based on CO observations. For the three other galaxies, a comparison is provided between this observational method and numerical ones.

Keywords

Velocity Field Position Angle Spiral Galaxy Galactic Center Observational Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Canzian B., 1993, PASP, 105, 661ADSCrossRefGoogle Scholar
  2. Daigle, O., Carignan, C., & Hernandez, O. 2004, in preparationGoogle Scholar
  3. Elmegreen B. G., Elmegreen D. M., Montenegro L., 1992, ApJS, 79, 37ADSCrossRefGoogle Scholar
  4. Garcia-Burillo S., Combes F., Gerin M., 1993, A&A, 274, 148ADSGoogle Scholar
  5. Helfer T. T., et al., 2003, ApJS, 145, 259ADSCrossRefGoogle Scholar
  6. Hernandez, O., Carignan, C., Amram P., & Wozniak H. 2004, in preparationGoogle Scholar
  7. Tremaine S., Weinberg M. D., 1984, ApJ, 282, L5ADSCrossRefGoogle Scholar
  8. Salo H., Laurikainen E., 2000, MNRAS, 319, 393ADSCrossRefGoogle Scholar
  9. Sempere M., 1999, Ap&SS, 269, 665ADSCrossRefGoogle Scholar
  10. Sempere M. J., Garcia-Burillo S., Combes F., Knapen J. H., 1995, A&A, 296, 45ADSGoogle Scholar
  11. Zimmer P., Rand R. J., McGraw J. T., 2004, astro-ph/0404365Google Scholar

Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • O. Hernandez
    • 1
    • 2
  • C. Carignan
    • 1
  • P. Amram
    • 2
  • O. Daigle
    • 1
    • 2
  1. 1.LAEUniversite de MontrealMontrealCanada
  2. 2.OAMPMarseille Cedex 04France

Personalised recommendations