| BILEK, Michal, JC. CUILLANDRE, S. GWYN, Ivana EBROVA, Kateřina BARTOŠKOVÁ, Bruno JUNGWIERT a Lucie JÍLKOVÁ. Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam. Online. ASTRONOMY & ASTROPHYSICS. LES ULIS CEDEX A: EDP SCIENCES S A, 2016, roč. 588, April, s. "nestrankovano", 12 s. ISSN 1432-0746. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201526608. [citováno 2024-04-24] |
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@article{1368683,
author = {Bilek, Michal and Cuillandre, JC. and Gwyn, S. and Ebrova, Ivana and Bartošková, Kateřina and Jungwiert, Bruno and Jílková, Lucie},
article_location = {LES ULIS CEDEX A},
article_number = {April},
doi = {http://dx.doi.org/10.1051/0004-6361/201526608},
keywords = {galaxies: peculiar; galaxies: elliptical and lenticular; galaxies: individual: NGC 3923; galaxies: photometry; techniques: image processing; gravitation},
language = {eng},
issn = {1432-0746},
journal = {ASTRONOMY & ASTROPHYSICS},
title = {Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam},
volume = {588},
year = {2016}
}
TY - JOUR
ID - 1368683
AU - Bilek, Michal - Cuillandre, JC. - Gwyn, S. - Ebrova, Ivana - Bartošková, Kateřina - Jungwiert, Bruno - Jílková, Lucie
PY - 2016
TI - Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam
JF - ASTRONOMY & ASTROPHYSICS
VL - 588
IS - April
SP - "nestrankovano"
EP - "nestrankovano"
PB - EDP SCIENCES S A
SN - 14320746
KW - galaxies: peculiar
KW - galaxies: elliptical and lenticular
KW - galaxies: individual: NGC 3923
KW - galaxies: photometry
KW - techniques: image processing
KW - gravitation
N2 - Context. The elliptical galaxy NGC3923 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. Aims. We obtain the deepest image ever of the galaxy, map the tidal features in it, and search for the predicted shell. Methods. 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 29 mag arcsec(-2). In addition, we reanalyzed an archival HST image of the galaxy. Results. We detected up to 42 shells in NGC3923. This is by far the highest number among all shell galaxies. We present the description of the shells and other tidal features in the galaxy. A probable progenitor of some of these features was discovered. The shell system likely originates from two or more progenitors. The predicted shell was not detected, but the new image revealed that the prediction was based on incorrect assumptions and poor data.
ER -
BILEK, Michal, JC. CUILLANDRE, S. GWYN, Ivana EBROVA, Kateřina BARTOŠKOVÁ, Bruno JUNGWIERT a Lucie JÍLKOVÁ. Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam. Online. \textit{ASTRONOMY \&{} ASTROPHYSICS}. LES ULIS CEDEX A: EDP SCIENCES S A, 2016, roč.~588, April, s.~''nestrankovano'', 12 s. ISSN~1432-0746. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201526608. [citováno 2024-04-24]
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