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Comparison of NIR and Hα emission from the HII regions of M100

Published online by Cambridge University Press:  21 March 2013

S. J. Chan  and
J. E. Beckman
S. J. Chan
Affiliation:
43 Tamar Way, Didcot, OX11 7QH, United Kingdom. email: sjchan2012@gmail.com
J. E. Beckman
Affiliation:
Instituto de Astrofisica de Canarias38205 La Laguna, Spain. email: jeb@iac.es CSIC, 28006 Madrid, Spain Department of Astrophysics, University of La Laguna, E-38200 La Laguna, Tenerife, Spain
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Abstract

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We measure the flux values in the 4 Spitzer-IRAC bands, of a sample of 78 isolated luminous HII regions in the grand design galaxy M100. We estimate the near-IR luminosities and compare them with the Hα-luminosities from the Knapen HII-region catalogue. We find a strong, and expected positive correlation between the total IR luminosity and the Hα luminosity, but no significant correlation between the luminosity and the IR temperature of the regions.

Keywords

HII regions — galaxies: individual (M100) — infrared: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 327
Copyright
Copyright © International Astronomical Union 2013

References

Chan, S. J. & Beckman, J. E. 2012, A&A, in preparationGoogle Scholar
Knapen, J. H., Stedman, S., Bramich, D. M., Folkes, S. L., & Bradley, T. R. 2004, A&A, 426, 1136Google Scholar
Knapen, J. H. 1998, MNRAS, 426, 1136Google Scholar
Spitzer Science Center 2006, Infrared Array Camera Data HandbookGoogle Scholar