5 papers
LIFTS: an Imaging Fourier Transform Spectrograph for Astronomy
Ron Wurtz, Edward Wishnow, Sébastien Blais-Ouellette +5
We present the first astronomical observations of the Livermore Imaging Fourier Transform Spectrograph for visible-band astronomy using the 3.5-meter Apache Point Observatory.
Multiwavelength Rotation Curves to Test Dark Halo Central Shapes
Sebastien Blais-Ouellette, Claude Carignan, Philippe Amram
We use Fabry-Perot Halpha spectroscopy, complemented with published HI radio synthesis observations to derive high resolution rotation curves of spiral galaxies. We investigate pre…
HST Imagery and CFHT Fabry-Perot 2-D Spectroscopy in Halpha of the Ejected Nebula M1-67: Turbulent Status
Yves Grosdidier, Anthony F. J. Moffat, Sébastien Blais-Ouellette +2
With HST-WFPC2 we have obtained a deep, H-alpha image of the WR nebula M1-67. With the interferometer of the Universite Laval (Quebec, Canada), we have obtained complementary Fabry…
A massive object in the core of NGC 5055?
Sebastien Blais-Ouellette
In a global kinematical study of NGC 5055 using high resolution Fabry-Perot, intriguing spectral line profiles have been observed in the center of the galaxy. These profiles seem t…
Necessity for High Accuracy Rotation Curves in Spiral Galaxies
Sebastien Blais-Ouellette, Claude Carignan, Philippe Amram
In the last 20 years, rotation curves derived from H I kinematics obtained on radio synthesis instruments were used to probe the dark matter distribution in spiral and dwarf irregu…