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Issue A&A
Volume 366, Number 1, January IV 2001
Page(s) 35 - 53
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20000345



A&A 366, 35-53 (2001)
DOI: 10.1051/0004-6361:20000345

Kinematics of the ionized gas in the Local Group irregular galaxy IC 1613

M. Valdez-Gutiérrez1, M. Rosado2, L. Georgiev2, J. Borissova3 and R. Kurtev4

1  Instituto Nacional de Astrofísica, Optica y Electrónica, Calle Luis Enrique Erro 1, 72840 Tonantzintla, Puebla, Mexico
2  Instituto de Astronomía, Universidad Nacional Autónoma de Mexico, Mexico
3  Institute of Astronomy, Bulgarian Academy of Sciences and Isaac Newton Institute of Chile Bulgarian Branch, 72 Tsarigradsko chaussèe, 1784 Sofia, Bulgaria
4  Department of Astronomy, Sofia University and Isaac Newton Institute of Chile Bulgarian Branch, 1164 Sofia, Bulgaria

(Received 7 June 2000 / Accepted 20 September 2000)

Abstract
We present H$\alpha$ and [SII] observations for the Local Group irregular galaxy IC 1613 using the PUMA scanning Fabry-Perot interferometer. Our goal is to analyze the kinematics of the ionized gas in the complex sample of superbubbles located in the whole extension of our field (10´), which includes most of the optical emission of this galaxy, and to study the inter-relationship between young stellar associations and nebulae based on a previous study that we have made on the stellar associations of the central region of this galaxy. The ionized gas in this galaxy is distributed in classical HII regions and in a series of superbubbles (also called giant shells) covering a large fraction of the optical extent of the galaxy. We present a catalog of kinematical properties of both the HII regions of this galaxy and the superbubbles. We have also compared the kinematics of the ionized gas in HII regions to search for possible dynamic differences between neutral and ionized gas.


Key words: galaxies: irregular -- galaxies: individual: IC 1613 -- galaxies: kinematics and dynamics -- Local Group -- (ISM): HII regions -- ISM: bubbles

Offprint request: M. Valdez-Gutiérrez, mago@inaoep.mx

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© ESO 2001


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