TWO-DIMENSIONAL KINEMATICS OF THE EDGE-ON SPIRAL GALAXY ESO 379-006

Journal Article · Wed May 15 04:00:00 EDT 2013 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/145/5/135· OSTI ID:22130723

Rosado, M.; Gabbasov, R. F.; Repetto, P.; Martos, M. ^[1]; Fuentes-Carrera, I. ^[2]; Amram, P.; Hernandez, O. ^[3]

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1. Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-264, CP 04510 Mexico, D. F. (Mexico)
2. Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional, U. P. Adolfo Lopez Mateos, Zacatenco, 07730 Mexico, D. F. (Mexico)
3. Laboratoire d'Astrophysique de Marseille, Aix-Marseille University (France)

We present a kinematical study of the nearly edge-on galaxy ESO 379-006 that shows the existence of extraplanar ionized gas. With Fabry-Perot spectroscopy at H{alpha}, we study the kinematics of ESO 379-006 using velocity maps and position-velocity diagrams parallel to the major and to the minor axis of the galaxy. We build the rotation curve of the disk and discuss the role of projection effects due to the fact of viewing this galaxy nearly edge-on. The twisting of the isovelocities in the radial velocity field of the disk of ESO 379-006 as well as the kinematical asymmetries found in some position-velocity diagrams parallel to the minor axis of the galaxy suggest the existence of deviations to circular motions in the disk that can be modeled and explained with the inclusion of a radial inflow probably generated by a bar or by spiral arms. We succeeded in detecting extraplanar diffuse ionized gas in this galaxy. At the same time, from the analysis of position-velocity diagrams, we found some evidence that the extraplanar gas could lag in rotation velocity with respect to the midplane rotation.

• OSTI ID: 22130723
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 5 Vol. 145; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ASTROPHYSICS
ASYMMETRY
GALAXIES
INCLUSIONS
RADIAL VELOCITY
ROTATION
SPECTROSCOPY
SPIRAL CONFIGURATION
TWO-DIMENSIONAL CALCULATIONS