Bibcode
Perez-Ramirez, D.; Knapen, J. H.; Peletier, R. F.; Laine, S.; Doyon, R.; Nadeau, D.
Referencia bibliográfica
VizieR On-line Data Catalog: J/MNRAS/317/234. Originally published in: 2000MNRAS.317..234P
Fecha de publicación:
7
2000
Número de citas
0
Número de citas referidas
0
Descripción
We have obtained NIR broad-band images in the J, H and K bands of 12
barred galaxies that make up our sample, during three observing runs
with the 3.6 m Canada-France-Hawaii Telescope on Hawaii. We used the
Montreal NIR camera (MONICA) equipped with a 256 x 256 pixel HgCdTe
array detector with a projected size of 0.248 arcsec. One of the main
data products presented in this paper is a set of detailed radial
profile fits to the NIR images. We present radial profiles of
ellipticity, major axis position angle, NIR colour, and H- band surface
brightness. We have used aperture photometry from the literature to
calibrate the data. After calibrating the images, we fitted ellipses to
the images. We thus produced plots of the surface brightness of the H-
band as a function of the radius, and colour profiles in J-K and H-K for
all the galaxies which were imaged in these bands. Error-bars in these
plots indicate the uncertainty in the determination of the sky
background. Certain aspects of the radial profiles are discussed in the
paper, but there is one characteristic which is worth mentioning here.
Apart from NGC 3516 and NGC 3982, the radial profiles show
characteristic behaviour near the radius of the circumnuclear ring. In
seven (out of 10) galaxies, all profiles (surface brightness, colour,
ellipticity and position angle) show either a change in slope, where the
surface brightness profile becomes steeper, or a bump, when the colour
profile shows a limited redder region caused by either dust or SF in or
near the ring. These characteristics are accompanied by some change in
ellipticity and position angle. (1 data file).