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  • 1
    Electronic Resource
    Electronic Resource
    Modifications of the Farlie-Gumbel-Morgenstern distributions. A tough hill to climb (1999)
    Springer
    Metrika 49 (1999), S. 135-145 
    Details
    ISSN: 1435-926X
    Keywords: Key words: Dependence ; correlation structure ; admissible range
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract. Polynomial-type single parameter extensions of the Farlie-Gumbel Morgenstern bivariate distributions are studied. It is shown that by means of these structures the positive correlation between the marginal distributions can be increased up to ≈.39 while the maximal negative correlation remains .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001840050030
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    Paper (German National Licenses)
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  • 2
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    Extremely Red Objects in the Lockman Hole (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: We investigate extremely red objects (EROs) using near- and mid-infrared observations in five passbands (3.6 to 24 microns) obtained from the Spitzer Space Telescope, and deep ground-based R and K imaging. The great sensitivity of the Infrared Array Camera (IRAC) camera allows us to detect 64 EROs (a surface density of 2.90 +/- 0.36 arcmin(exp -2); [3.6](sub AB) is less than 23.7) in only 12 minutes of IRAC exposure time, by means of an R - [3.6] color cut (analogous to the traditional red R - K cut). A pure infrared K - [3.6] red cut detects a somewhat different population and may be more effective at selecting z greater than 1.3 EROs. We find approximately 17% of all galaxies detected by IRAC at 3.6 or 4.5 microns to be EROs. These percentages rise to about 40% at 5.8 microns, and about 60% at 8.0 microns. We utilize the spectral bump at 1.6 microns to divide the EROs into broad redshift slices using only near-infrared colors (2.2/3.6/4.5 microns). We conclude that two-thirds of all EROs lie at redshift z greater than 1.3. Detections at 24 microns imply that at least 11% of 0.6 less than z and less than 1.3 EROs and at least 22% of z greater than 1.3 EROs are dusty star-forming galaxies.
    Keywords: Astrophysics
    Type: The Astrophysical Journal Supplement Series; 154; 107-111
    Format: text
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