NGC 5128, J.L. Sersic, Atlas de Galaxias Australes, 1968
NGC 253, J.L. Sersic, Atlas de Galaxias Australes, 1968
1st Extragalactic Astronomy Meeting, 1975, J.L. Sersic, T.G. Catellanos, P. Kaufman
NGC 2442, J.L. Sersic, Atlas de Galaxias Australes, 1968
2nd Extragalactic Astronomy Meeting, 1987
NGC 2997, J.L. Sersic, Atlas de Galaxias Australes, 1968
3rd Extragalactic Astronomy Meeting, 1996
NGC 55, J.L. Sersic, Atlas de Galaxias Australes, 1968

Rodriguez Facundo

Argentina  – IATE

Central galaxy alignment with the environment

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We present the study of the alignment of central galaxies with the surrounding structures and satellite galaxies in their group/halo. To perform this analysis, we use a modified version of the two-point cross-correlation function. We use both observational data from the Sloan survey (SDSS DR16) and simulations (Illustris TNG300-1). The results obtained allow us to relate the alignment to the halo assembly process as it can be explained by a combination of physical processes on different scales: the central galaxy aligns with the dark matter halo it inhabits, and this, in turn, aligns with the surrounding structures on large scales. 

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