Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges

Details Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges

2004-01-06

arxiv.org/abs/astro-ph/0401057v1

Astron.Astrophys. 417 (2004) 527-539

Astronomy and Astrophysics

Astrophysics

LaTeX, 14 pages, 19 figures, accepted to be published in A&A. Figs. 5, 6, 7, 8, 9, 12 and 14 are available as jpg-files

Scientific paper

10.1051/0004-6361:20031782

Inspecting all 1224 edge-on disk galaxies larger than 2' in the RC3 on DSS images we have found several galaxies with extraordinary bulges meeting two criteria: They are box shaped and large in respect to the diameters of their galaxies. These bulges are often disturbed, show frequently prominent irregularities and asymmetries, and some possess possible merger remnants or merging satellites. For these bulges we have introduced the term "Thick Boxy Bulges" (TBBs). About 2% of all disk galaxies (S0-Sd), respectively 4% of all galaxies with box- and peanut-shaped (b/p) bulges, belong to this class of galaxies. Using multicolour CCD and NIR data we have enlarged and followed up our sample of nearly 20 galaxies with a TBB. The disturbed morphology of a large fraction of these galaxies shows that many of the TBB galaxies are not dynamically settled. For the TBBs the extent of the box shape seems to be too large to result from a normal bar potential. Therefore we conclude that two classes of b/p bulges exist with different origins. While most (~96%) b/p bulges can be explained by bars alone, the extended boxy structures of TBBs result most likely from accreted material by infalling satellite companions (soft merging).

Affiliated with

Also associated with

No associations

Rating

Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges 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 Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-627331