CCD Imaging of NGC4861 - Morphology and Brightness Distribution

Bibcode
1994A&A...283..753D
Dottori, H.; Cepa, J.; Vilchez, J.; Barth, C. S.
Bibliographical reference

Astronomy and Astrophysics, Vol. 283, NO. 3/MAR(III), P. 753, 1994

Advertised on:
3
1994
Journal
Astronomy and Astrophysics
Number of authors
4
IAC number of authors
2
Citations
7
Refereed citations
6
Description
We discuss narrow band CCD imaging of NGC 4861 in continua at 4500 A, 5300 A and 6300 A as well as in Hα, Hβ and (O III] λ5007 A lines. We find that the system exhibits a double nucleus structure and a counter-tail to the well-known northeast chain of HII regions. The mean value of lines and continua frames for the main body brightness distribution of NGC 4861 is R^-2.04+/-0.35^, comparable to the Hubble-Reynolds law R^-2^. The three mentioned characteristics indicate that NGC 4861 might have undergone a merger process. The time elapsed from the beginning of the phenomenon is set to be smaller than three crossing times. New observations are proposed to confirm or reject the merger scenario for this peculiar galaxy.
Type
Refereed

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