J/MNRAS/317/234 HJK photometry of 10 barred spirals (Perez-Ramirez+, 2000)
Circumnuclear regions in barred spiral galaxies I. Near-infrared imaging
Perez-Ramirez D., Knapen J.H., Peletier R.F., Laine S., Doyon R., Nadeau D.
<Mon. Not. R. Astron. Soc. 317, 234 (2000)>
=2000MNRAS.317..234P 2000MNRAS.317..234P
ADC_Keywords: Galaxies, photometry ; Photometry, infrared
Keywords: galaxies: spiral - galaxies: starburst - galaxies: evolution -
galaxies: structure - infrared: galaxies
Description:
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.
Objects:
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RA (2000) DE Designation(s)
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00 29 18.0 +02 52 18 NGC 130
00 34 02.3 -09 42 23 NGC 153
00 51 18. -73 09 00 NGC 290
00 59 19.8 -18 14 02 NGC 335
01 01 56.8 -06 47 44 NGC 350
01 01 57.8 -01 56 03 NGC 351
01 08 53.7 +32 30 52 NGC 398
01 13 00.2 -00 15 11 NGC 430
01 14 04.7 +33 42 13 NGC 431
01 11 46.3 -61 31 40 NGC 432
01 24 47.9 +09 32 21 NGC 524
01 51 14.5 +22 34 57 NGC 695
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 58 527 The photometric profiles
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Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- NGC Galaxy NGC (Cat. VII/118) designation
10- 14 F5.2 arcsec Rad Major axis radius
16- 20 F5.2 mag/arcsec+2 Hmag H-band surface brightness profile
22- 25 F4.2 mag/arcsec+2 e_Hmag Error in the determination of sky
27- 30 F4.2 mag/arcsec+2 J-K ? J-K colour profile
32- 35 F4.2 mag/arcsec+2 e_J-K ? Error in the determination of sky
37- 41 F5.2 mag/arcsec+2 H-K ? H-K colour profile
43- 46 F4.2 mag/arcsec+2 e_H-K ? Error in the determination of sky
48- 51 F4.2 --- Ell Ellipticity (1-b/a)
53- 58 F6.2 deg PA [-90/366]? Major axis position angle
(around a mean position)
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Acknowledgements: Dolores Perez-Ramirez ,
Johan Knapen
(End) Patricia Bauer [CDS] 03-Jul-2000