Fingerhut, Robin L. and McCall, Marshall L. and Argote, Mauricio and Cluver, Michelle E. and Nishiyama, Shogo and Rekola, Rami T. F. and Richer, Michael G. and Vaduvescu, Ovidiu and Woudt, Patrick A. (2010) Deep K_s-near-infrared Surface Photometry of 80 Dwarf Irregular Galaxies in the Local Volume. Astrophysical Journal, 716 (1). pp. 792-809. ISSN 0004-637X http://resolver.caltech.edu/CaltechAUTHORS:20100617-112600858
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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.|
|Subject Keywords:||galaxies: dwarf; galaxies: fundamental parameters; galaxies: irregular; galaxies: photometry; infrared: galaxies; surveys|
|Classification Code:||PACS: 95.80.+p; 95.85.Jq; 95.85.Kr; 98.56.Wm; 98.35.Ln.|
|Official Citation:||Robin L. Fingerhut et al 2010 ApJ 716 792 doi: 10.1088/0004-637X/716/1/792|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||02 Jul 2010 03:35|
|Last Modified:||26 Dec 2012 12:09|
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