Open AccessBHαBAR: big Hα kinematical sample of barred spiral galaxies – I. Fabry–Perot observations of 21 galaxies
Author(s) -
Hernandez O.,
Carignan C.,
Amram P.,
Chemin L.,
Daigle O.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2005.09125.x
Subject(s) - physics , astrophysics , galaxy , spiral galaxy , spiral (railway) , bar (unit) , monochromatic color , bulge , astronomy , line (geometry) , optics , geometry , mathematical analysis , mathematics , meteorology
ABSTRACT We present the Hα gas kinematics of 21 representative barred spiral galaxies belonging to the BHαBAR sample. The galaxies were observed with FaNTOmM, a Fabry–Perot integral‐field spectrometer, on three different telescopes. The three‐dimensional data cubes were processed through a robust pipeline with the aim of providing the most homogeneous and accurate data set possible useful for further analysis. The data cubes were spatially binned to a constant signal‐to‐noise ratio, typically around 7. Maps of the monochromatic Hα emission line and of the velocity field were generated and the kinematical parameters were derived for the whole sample using tilted‐ring models. The photometrical and kinematical parameters (position angle of the major axis, inclination, systemic velocity and kinematical centre) are in relative good agreement, except perhaps for the later‐type spirals.