Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-01-18
Mon.Not.Roy.Astron.Soc. 358 (2005) 1309-1321
Astronomy and Astrophysics
Astrophysics
12 pages, 8 figures. Accepted for publication in MNRAS
Scientific paper
10.1111/j.1365-2966.2005.08828.x
We present a deep near-infrared wide-angle photometric analysis of the structure of the inner Galactic bar and central disk. The presence of a triaxial structure at the centre of the Galaxy is confirmed, consistent with a bar inclined at 22+/-5.5 deg from the Sun-Galactic centre line, extending to about 2.5 kpc from the Galactic centre and with a rather small axis ratio. A feature at l=-9.8 deg not aligned with this triaxiality suggests the existence of a second structure in the inner Galaxy, a double triaxiality or an inner ring. We argue that this is likely to be the signature of the end of the Galactic bar, at about 2.5-3 kpc, which is circumscribed by an inner pseudo-ring. No thick dust lane preceding the bar is detected, and a hole in the disc's dust distribution inside the bar radius is inferred.
Babusiaux Carine
Gilmore Gerard
No associations
LandOfFree
The structure of the Galactic bar does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The structure of the Galactic bar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The structure of the Galactic bar will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-704889