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Star formation enhancement characteristics in interacting galaxies

Published online by Cambridge University Press:  09 February 2015

J. Zaragoza-Cardiel ,
J. E. Beckman ,
J. Font ,
A. Camps-Fariña ,
B. García-Lorenzo  and
S. Erroz-Ferrer
J. Zaragoza-Cardiel
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
J. E. Beckman
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain CSIC, 28006 Madrid, Spain
J. Font
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
A. Camps-Fariña
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
B. García-Lorenzo
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
S. Erroz-Ferrer
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38205 La Laguna, Tenerife, Spain email: jzc@iac.es Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
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Abstract

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We have observed 12 interacting galaxies using the Fabry-Perot interferometer GHαFaS (Galaxy Hα Fabry-Perot system) on the 4.2m William Herschel Telescope (La Palma). We have extracted the physical properties (sizes, Hα luminosity and velocity dispersion) of 236 HII regions for the full sample of interacting galaxies. We have derived the physical properties of 664 HII regions for a sample of 28 isolated galaxies observed with the same instrument in order to compare both populations of HII regions, finding that there are brighter and denser star forming regions in the interacting galaxies compared with the isolated galaxies sample.

Keywords

galalaxies: interactions – galaxies: kinematics and dynamics – stars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S309: Galaxies in 3D across the Universe , July 2014 , pp. 354
Copyright
Copyright © International Astronomical Union 2015 

References

Zaragoza-Cardiel, J., Font-Serra, J., Beckman, J. E., et al. 2013, MNRAS, 432, 998Google Scholar
Zaragoza-Cardiel, J., Font, J., Beckman, J. E., et al. 2014, arXiv:1409.1251Google Scholar