J/A+A/588/A77 NGC 3923 MegaCam image (Bilek+, 2016)
Deep imaging of the shell elliptical galaxy NGC 3923 with MegaCam.
Bilek M., Cuillandre J.-C., Gwyn S., Ebrova I., Bartoskova K.,
Jungwiert B., Jilkova L.
<Astron. Astrophys. 588, A77 (2016)>
=2016A&A...588A..77B 2016A&A...588A..77B (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; Galaxies, optical ; Galaxies, peculiar ;
Galaxies, photometry ; Morphology
Keywords: galaxies: peculiar - galaxies: elliptical and lenticular, cD -
galaxies: individual: NGC 3923 - galaxies: photometry -
techniques: image processing - gravitation
Abstract:
The elliptical galaxy NGC 3923 is known to be surrounded by a number
of stellar shells, probable remnants of an accreted galaxy. Despite
its uniqueness, the deepest images of its outskirts come from the
1980s. On the basis of the modified Newtonian dynamics (MOND), it has
recently been predicted that a new shell lies in this region.
We obtain the deepest image ever of the galaxy, map the tidal features
in it, and search for the predicted shell.
The image of the galaxy was taken by the MegaCam camera at the
Canada-France-Hawaii Telescope in the g'-band. It reached the
surface-brightness limit of 29mag/arcsec2. In addition, we
reanalyzed an archival HST image of the galaxy.
Description:
The MegaCam image discussed in the paper in the fits format.
Objects:
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RA (2000) DE Designation(s)
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11 51 01.78 -28 48 22.4 NGC 3923 = LEDA 37061
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 80 1 Informations on fits image
ngc3923.fits 2880 2562197 Fits image
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 24 F5.3 arcsec/pix scale Scale of the image
26- 30 I5 --- Nx Number of pixels along X-axis
32- 36 I5 --- Ny Number of pixels along Y-axis
38- 44 I7 Kibyte size Size of FITS file
46- 57 A12 --- FileName Name of FITS file
59- 80 A22 --- Title Title of the FITS file
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Acknowledgements:
Michal Bilek, michal.bilek(at)asu.cas.cz
(End) Patricia Vannier [CDS] 29-Feb-2016