Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10332804" target="_blank" >RIV/00216208:11320/16:10332804 - isvavai.cz</a>

Alternative codes found

RIV/67985815:_____/16:00463952 RIV/00216224:14310/16:00093056

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201526608" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201526608</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201526608" target="_blank" >10.1051/0004-6361/201526608</a>

Result language

angličtina

Original language name

Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam

Original language description

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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy and Astrophysics [online]

ISSN

1432-0746

e-ISSN

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Volume of the periodical

588

Issue of the periodical within the volume

duben

Country of publishing house

PL - POLAND

Number of pages

12

Pages from-to

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UT code for WoS article

000373207800089

EID of the result in the Scopus database

2-s2.0-84962339147