Deep K_s-near-infrared Surface Photometry of 80 Dwarf Irregular Galaxies in the Local Volume
Abstract
We present deep near-infrared (K_s) images and surface photometry for 80 dwarf irregular galaxies (dIs) within ~5 Mpc of the Milky Way. The galaxy images were obtained at five different facilities between 2004 and 2006. The image reductions and surface photometry have been performed using methods specifically designed for isolating faint galaxies from the high and varying near-infrared sky level. Fifty-four of the 80 dIs have surface brightness profiles which could be fit to a hyperbolic-secant (sech) function, while the remaining profiles could be fit to the sum of a sech and a Gaussian function. From these fits, we have measured central surface brightnesses, scale lengths, and integrated magnitudes. This survey is part of a larger study of the connection between large-scale structure and the global properties of dIs, the hypothesized building-blocks of more massive galaxies.
Additional Information
© 2010 The American Astronomical Society. Received 2009 March 27; accepted 2010 April 26; published 2010 May 21. R.L.F. and M.L.M. gratefully acknowledge the continuing support of the Natural Sciences and Engineering Research Council of Canada. The authors would also like to thank the referee for extremely constructive comments, which have helped to strengthen the methods behind the results of this paper.Attached Files
Published - Fingerhut2010p10349Astrophys_J.pdf
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Additional details
- Eprint ID
- 18720
- Resolver ID
- CaltechAUTHORS:20100617-112600858
- Natural Sciences and Engineering Research Council of Canada
- Created
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2010-07-02Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field