J/A+A/593/A126 Malin 1 images at 6 wavelengths (Boissier+, 2016)
The properties of the Malin 1 galaxy giant disk:
A panchromatic view from the NGVS and GUViCS surveys.
Boissier S., Boselli A., Ferrarese L., Cote P., Roehlly Y., Gwyn S.D.J.,
Cuillandre J.-C., Roediger J., Koda J., Munos Mateos J.C., Gil de Paz A.,
Madore B.F.
<Astron. Astrophys. 593, A126 (2016)>
=2016A&A...593A.126B 2016A&A...593A.126B (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, optical
Keywords: galaxies: individual: Malin 1 - galaxies: formation -
galaxies: evolution - galaxies: star formation
Abstract:
Low surface brightness galaxies (LSBGs) represent a significant
percentage of local galaxies but their formation and evolution remain
elusive. They may hold crucial information for our understanding of
many key issues (i.e., census of baryonic and dark matter, star
formation in the low density regime, mass function). The most massive
examples - the so called giant LSBGs - can be as massive as the
Milky Way, but with this mass being distributed in a much larger disk.
Malin 1 is an iconic giant LSBG - perhaps the largest disk galaxy
known. We attempt to bring new insights on its structure and evolution
on the basis of new images covering a wide range in wavelength.
We have computed surface brightness profiles (and average surface
brightnesses in 16 regions of interest), in six photometric bands
(FUV, NUV, u, g, i, z). We compared these data to various models,
testing a variety of assumptions concerning the formation and
evolution of Malin 1.
Description:
Six images of Malin 1 are provided in fits format, using the same
pixel scale. The original data are taken from the GUViCS and NGVS
surveys. Units and calibration are kept as in the standard products
from these survey (i.e. GALEX FUV and NUV, and CFHT MegaCam u, g, i z.
Objects:
----------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------
12 36 59.34 +14 19 49.5 Malin 1 = LEDA 42102
----------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
list.dat 82 6 List of fits images
fits/* . 6 Individual fits images
--------------------------------------------------------------------------------
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
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- 29 I4 --- Nx Number of pixels along X-axis
31- 34 I4 --- Ny Number of pixels along Y-axis
36- 40 I5 Kibyte size Size of FITS file
42- 50 A9 --- FileName Name of FITS file, in subdirectory fits
52- 82 A31 --- Title Title of the FITS file
--------------------------------------------------------------------------------
Acknowledgements:
Samuel Boissier, samuel.boissier(at)lam.fr
(End) Samuel Boissier [LAM], Patricia Vannier [CDS] 03-Oct-2016