2005AJ....130.1524P -
Astron. J., 130, 1524-1534 (2005/October-0)
The interacting galaxy pair NGC 5394/95: near-infrared photometry, structure, and morphology.
PUERARI I., VALDEZ-GUTIERREZ M. and HERNANDEZ-LOPEZ I.
Abstract (from CDS):
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 H2β 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 H1α) 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.
Abstract Copyright:
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Journal keyword(s):
Galaxies: Evolution - Galaxies: Fundamental Parameters - Galaxies: Individual: NGC Number: NGC 5394 - Galaxies: Individual: NGC Number: NGC 5395 - Galaxies: Interactions - Galaxies: Structure - Infrared: Galaxies
CDS comments:
Galaxies G1, G2, G3 close to the Cartwheel galaxy are [H95] G1, G2, G3.
Simbad objects:
8
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