3 papers
astro-ph2008
Using the Tremaine-Weinberg method to measure pattern speeds from Hαvelocity maps
John Beckman, Kambiz Fathi, Nuria Piñol +3
The Tremaine-Weinberg method is a well-known model independent technique for measuring density wave pattern speeds in spiral galaxies. Here we show how it can be applied to the dat…
astro-ph2008
GH FaS : Galaxy H-alpha Fabry-Perot System for the WHT
O. Hernandez, K. Fathi, C. Carignan +11
GHFaS a new Fabry-Perot system, is now available at the William Herschel Telescope. It was mounted, for the first time, at the Nasmyth focus of the 4.2 meter WHT on La Palma in…
astro-ph2007
Fabry-Perot Interferometry and Dynamics of Spiral Galaxies
Kambiz Fathi, John E. Beckman, Claude Carignan +1
We present two-dimensional Febry-Perot observations of emission-line distribution and kinematics in nearly spiral galaxies. We have developed and demonstrated the utility of a numb…