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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
An improved method for statistical studies of the internal kinematics of H II regions: The case of M83
Monthly Notices of the Royal Astronomical Society, Volume 407, No. 4, Year 2010
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Description
We present the integrated Hα emission line profile for 157 H II regions in the central 3.4 × 3.4 arcmin2 of the galaxy M83 (NGC 5236). Using the Fabry-Perot interferometer GHαFAS, on the 4.2-m William Herschel Telescope on La Palma, we show the importance of a good characterization of the instrumental response function for the study of line profile shapes. The luminosity-velocity dispersion relation is also studied, and in the log(L)-log(σ) plane we do not find a linear relation, but an upper envelope with equation log(LHα) = 0.9 log(σ) + 38.1. For the adopted distance of 4.5 Mpc, the upper envelope appears at the luminosity L = 1038.5 erg s-1, in full agreement with previous studies of other galaxies, reinforcing the idea of using HII regions as standard candles. © 2010 The Authors. Journal compilation. © 2010 RAS.
Authors & Co-Authors
Blasco-Herrera, Javier
Sweden, Stockholm
Stockholm Observatory
Fathi, Kambiz
Sweden, Stockholm
Stockholm Observatory
Sweden, Stockholm
Stockholms Universitet
Beckman, John E.
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Spain, Madrid
Consejo Superior de Investigaciones Científicas
Spain, San Cristobal de la Laguna
Universidad de la Laguna
Gutiérrez, Leonel
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Mexico, Mexico
Universidad Nacional Autónoma de México
Lundgren, Andreas A.
Chile, Santiago
European Southern Observatory Santiago
Épinat, Benoît
France, Toulouse
Université Fédérale Toulouse Midi-pyrénées
Östlin, Göran
Sweden, Stockholm
Stockholm Observatory
Sweden, Stockholm
Stockholms Universitet
Font, Joan
Spain, San Cristobal de la Laguna
Instituto Astrofisico de Canarias
Hernandez, Olivier
Canada, Montreal
University of Montreal
de Denus-Baillargeon, Marie Maude
Canada, Montreal
University of Montreal
France, Marseille
Aix Marseille Université
Carignan, Claude
Canada, Montreal
University of Montreal
Burkina Faso, Ouagadougou
University of Ouagadougou
Statistics
Citations: 20
Authors: 11
Affiliations: 11
Identifiers
Doi:
10.1111/j.1365-2966.2010.17078.x
ISSN:
00358711
e-ISSN:
13652966
Research Areas
Environmental