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- W2014651197 abstract "view Abstract Citations (182) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Deep 2 Micron Imaging of the Sky: Evidence for a New Extragalactic Population Elston, R. ; Rieke, G. H. ; Rieke, M. J. Abstract We have obtained the first deep images of high Galactic latitude sky at 2 microns. These images reach a 1σ detection limit of 21.9 mag arcsec^-2^ at K, about 1/20,000 of the sky level. A total of 10 arcmin^2^ of the sky was imaged. Of particular interest are two extended objects with K magnitudes of about 17 and R-K colors of about 5. These objects occupy a region of the color-magnitude diagram that is separate from the locus of normal galaxies and should not be occupied by large numbers of normal galaxies at any redshift. We suggest that these may be high-redshift galaxies (z > 6) which are in a luminous star-forming phase. Additionally, we have located a group of objects at K = 18 which are not detected at R and have R-K colors greater than 5. These may be additional members of the class of objects described above, or they may be weakly evolved elliptical galaxies at z = 1-1.5. Publication: The Astrophysical Journal Pub Date: August 1988 DOI: 10.1086/185239 Bibcode: 1988ApJ...331L..77E Keywords: Astronomical Photography; Faint Objects; Galactic Evolution; Infrared Imagery; Infrared Sources (Astronomy); Astronomical Models; Background Radiation; Color-Magnitude Diagram; Red Shift; Astrophysics; GALAXIES: EVOLUTION; GALAXIES: FORMATION; INFRARED: SOURCES full text sources ADS | data products SIMBAD (4)" @default.
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- W2014651197 date "1988-08-01" @default.
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- W2014651197 title "Deep 2 micron imaging of the sky - Evidence for a new extragalactic population" @default.
- W2014651197 doi "https://doi.org/10.1086/185239" @default.
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