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2D kinematics of the edge-on spiral galaxy ESO 379-006

Published online by Cambridge University Press:  17 July 2013

M. Rosado
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México Apartado Postal 70-264, CP04510, México, D. F. email: margarit@astro.unam.mx
R. F. Gabbasov
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México Apartado Postal 70-264, CP04510, México, D. F. email: margarit@astro.unam.mx
P. Repetto
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México Apartado Postal 70-264, CP04510, México, D. F. email: margarit@astro.unam.mx
I. Fuentes-Carrera
Affiliation:
Escuela Superior de Física y Matemáticas, IPN, México Box 515, SE-75120 Uppsala, Sweden email: hoefner@astro.uu.se
P. Amram
Affiliation:
Laboratoire d'Astrophysique de Marseille, France
M. Martos
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México Apartado Postal 70-264, CP04510, México, D. F. email: margarit@astro.unam.mx
O. Hernandez
Affiliation:
Laboratoire d'Astrophysique de Marseille, France Université de Montréal, Canada
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Abstract

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We present a kinematical study of the marginally edge-on galaxy ESO 379-006. With Fabry-Perot spectroscopy at Hα we obtain velocity maps, the radial velocity field, and position-velocity diagrams parallel to the major and to the minor axis of the galaxy. We build the rotation curve of the galaxy and discuss the role of projection effects. The twisting of isovelocities in the radial velocity field of the disk of ESO 379-006 as well as a kinematical asymmetry found in the position-velocity diagrams parallel to the minor axis suggest the existence of non-circular motions that can be modeled by including a radial inflow besides the rotation motion. Extraplanar Diffuse Ionized gas was detected in this galaxy both from the images and from its kinematics. It is possible that the diffuse gas is lagging in rotation.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013