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Date and Time of the Query: 2018-12-17 T02:11:44 PST
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For refcode 2005AJ....130.1524P:
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2005AJ....130.1524P The Interacting Galaxy Pair NGC 5394/95: Near-Infrared Photometry, Structure, and Morphology Ivanio Puerari, Margarita Valdez-Gutierrez, and Izbeth Hernandez-Lopez Abstract. We present near-infrared observations in the J, H, and K' passbands of the interacting pair of galaxies NGC 5394/95 (KPG 404). The total magnitudes, colors, surface brightnesses, and color profiles are calculated. In addition, aperture magnitudes are compared against previous determinations. We also perform a structural (disk + bulge) analysis, as well as a two-dimensional Fourier analysis, to gain insight into the morphology of the pair. The disk + bulge fit shows that NGC 5394 (KPG 404A) is more compact than normal galaxies, while NGC 5395 (KPG 404B) is less concentrated. The two-dimensional Fourier analysis shows that NGC 5394 is an H2{beta} galaxy in the dust-penetrated (DP) classification by Block & Puerari. NGC 5395, in contrast, displays a very complex structure that needs a number of Fourier coefficients to be explained. A tightly wound m=1 coefficient (DP class H1{alpha}) is the main structure, but other m=1 and m=2 coefficients (suggesting modulation) are also present in the Fourier spectra. The m=1 coefficients represent a pseudo-ring-type structure, indicative of a collision rather than a passage. Based on our results we are able to assert that the scenario of the interaction between the galaxy members of KPG 404 should take into account a crossing of NGC 5394 through the disk of NGC 5395 in a Cartwheel-like encounter rather than a passage as in M51-type pairs. Numerical simulations could help to unravel the structural and morphological evolution of this interacting pair. Keywords: Galaxies: Evolution, Galaxies: Fundamental Parameters, Galaxies: Individual: NGC Number: NGC 5394, Galaxies: Individual: NGC5395, Galaxies: Interactions, Galaxies: Structure, Infrared: Galaxies
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