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Internal kinematics and physical properties of HII regions in the Arp 270 system

Published online by Cambridge University Press:  21 March 2013

Javier Zaragoza
Affiliation:
Instituto de Astrofsica de Canarias, C/ Va Lctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es, jfont@iac.es, jeb@iac.es, bgarcia@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
Joan Font
Affiliation:
Instituto de Astrofsica de Canarias, C/ Va Lctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es, jfont@iac.es, jeb@iac.es, bgarcia@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
Javier Blasco
Affiliation:
Stockholm Observatory, Department of Astronomy, Stockholm University, AlbaNova Center, 106 91 Stockholm, Sweden email: javier@astro.su.se
John E. Beckman
Affiliation:
Instituto de Astrofsica de Canarias, C/ Va Lctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es, jfont@iac.es, jeb@iac.es, bgarcia@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain CSIC, 28006 Madrid, Spain
Begoña García
Affiliation:
Instituto de Astrofsica de Canarias, C/ Va Lctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es, jfont@iac.es, jeb@iac.es, bgarcia@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
Corresponding
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Abstract

We have observed Arp 270 using the GHαFaS Fabry-Perot spectrometer on the 4.2m William Herschel Telescope (La Palma). In the edge-on companion we detect a radial gas inflow of ∼ 0.36 M/yr to the centre and also an axially confined outflow of ∼ 0.24 M/yr from the nucleus in two opposing directions. We find two different behaviors between the physical properties of the HII regions. We suggest as a possible explanation a sub and supersonic regime.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

References

Zaragoza, J.et al. 2013, in prep.Google Scholar
Bradley, T. R. and Knapen, J. H., Beckman, J. E., & Folkes, S. L 2006, AA 459 L13L16CrossRefGoogle Scholar

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