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Deep K_s-near-infrared Surface Photometry of 80 Dwarf Irregular Galaxies in the Local Volume

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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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-637X/716/1/792DOIUNSPECIFIED
http://iopscience.iop.org/0004-637X/716/1/792PublisherUNSPECIFIED
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.
Funders:
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of CanadaUNSPECIFIED
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.
Record Number:CaltechAUTHORS:20100617-112600858
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20100617-112600858
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.
ID Code:18720
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:02 Jul 2010 03:35
Last Modified:26 Dec 2012 12:09

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