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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/93978
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- An imaging k-band survey - I. the catalogue star and galaxy counts
- Glazebrook, Karl; Peacock, J. A.; Collins, C. A.; Miller, L.
- We present results from a large area (552 arcmin2) imaging K-band survey of faint objects. The survey is a high galactic latitude blank-field sample to a 5σ limit of K ≃ 17.3. The methods for constructing the infrared survey are described, including flatfielding, astrometry, mosaicing and photometry. Also described are optical CCD observations which cover the survey to provide optical-infrared colours of almost all the objects in the sample. Star-galaxy discrimination is performed and the results used to derive the infrared star and galaxy counts. K-band 'no-evolution' galaxy-count models are constructed and compared with the observed data. In the infrared, there is no counterpart for the large excess of faint galaxies over the no-evolution model seen in optical counts. In contrast, the K counts require little or no evolution in the luminosity or space density of galaxies, although it is shown that the count predictions can be remarkably insensitive to evolution under certain reasonable assumptions. Finally, model predictions for K-selected redshift surveys are derived.
- Publication type
- Journal article
- Monthly Notices of the Royal Astronomical Society, Vol. 226 (1994), pp. 65-91
- Publication year
- Brown dwarfs; Galaxy evolution; Infrared; Low-mass stars; Surveys
- Wiley-Blackwell Publishing
- Publisher URL
- Copyright © 1994 RAS. The accepted manuscript of the paper is reproduced here in accordance with the copyright policy of the publisher. The definitive publication is available at www.interscience.wiley.com.
- Full text
- Peer reviewed