A POLAR-NUCLEUS DARK LANE IN THE BARRED SPIRAL M83 - 3-DIMENSIONAL ACCRETION IN THE NUCLEUS

Authors
SOFUE Y WAKAMATSU K
Citation
Y. Sofue et K. Wakamatsu, A POLAR-NUCLEUS DARK LANE IN THE BARRED SPIRAL M83 - 3-DIMENSIONAL ACCRETION IN THE NUCLEUS, The Astronomical journal, 107(3), 1994, pp. 1018
Citations number
17
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astronomical journal → ACNP
ISSN journal
00046256
Volume
107
Issue
3
Year of publication
1994
Database
ISI
SICI code
0004-6256(1994)107:3<1018:APDLIT>2.0.ZU;2-G
Abstract
The central region of the barred spiral galaxy M83 reveals a polar-nuc leus dust lane, which extends from the NE molecular bar and crosses th e central bulge. Its SW counterpart is not visible, being hidden behin d the bulge. This asymmetry, in spite of the galaxy's face-on orientat ion and the symmetric bar structure in the CO line emission, indicates that the dark lane is an off-plane structure. Such a ''polar-nucleus' ' structure can be formed by a noncoplanar, three-dimensional accretio n in a warped disk.