GHαFaS: Galaxy Hα Fabry-Perot System for the William Herschel Telescope

Details GHαFaS: Galaxy Hα Fabry-Perot System for the William Herschel Telescope GHαFaS: Galaxy Hα Fabry-Perot System for the William Herschel Telescope

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pasp..120..665h&link_type=abstract

Publications of the Astronomical Society of the Pacific, Volume 120, issue 868, pp.665-680

Astronomy and Astrophysics

Astrophysics

13

Astronomical Instrumentation

Scientific paper

GHαFaS, a new Fabry-Perot system, is now available at the William Herschel Telescope (WHT). It was mounted, for the first time, at the Nasmyth focus of the 4.2-m WHT on La Palma in 2007 July. Using modern technology, with a spectral resolution of the order R˜15,000, and with a seeing-limited spatial resolution, GHαFaS will provide a new look at the Hα-emitting gas over a 4.8' circular field in the nearby universe. Many science programs can be done on a 4.2-m class telescope in world-class seeing conditions with a scanning Fabry-Perot. Not only galaxies but H II regions, planetary nebulae, supernova remnants, and the diffuse interstellar medium are subjects for which unique data can be aquired rapidly. Astronomers from the Laboratoire d'Astrophysique Expérimentale (LAE) in Montréal, the Laboratoire d'Astrophysique de Marseille (LAM-OAMP), and the Instituto de Astrofísica de Canarias (IAC), have inaugurated GHαFaS by studying in detail the dynamics of some nearby spiral galaxies. A robust set of state-of-the-art tools for reducing and analyzing the data cubes obtained with GHαFaS has also been developed.

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