Dark matter haloes in interacting isolated galaxy pairs: The Importance of the Hα rotation curve
Authors: Fuentes-Carrera, Isaura; Amram, Philippe; Rosado, Margarita
Source: Astrophysics and Space Science, Volume 281, Numbers 1-2, July 2002 , pp. 411-414(4)
Abstract:We present Hα scanning Fabry-Perot observations of the interacting galaxy pair NGC 3893/96 (Kar 302), an M51-type galaxy pair. The velocity field and rotation curve of the main galaxy (NGC 3893) were derived. These show the galaxy follows a rather axisymmetric behaviour. Together with HI observations, several mass models were adjusted in order to study the nature of the dark halo as well as the mass-to-light ratio of the galaxy. We find that in order to constrain these models, it is important to have a high resolution Hα rotation curve for the inner parts of the galaxy.
Document Type: Research Article
Publication date: 2002-07-01