The K-Band Galaxy Luminosity Function

  title={The K-Band Galaxy Luminosity Function},
  author={Christopher S. Kochanek and Michael Andrew Pahre and Emilio E. Falco and John Peter Huchra and Jeff A. Mader and Thomas H. Jarrett and Thomas J. Chester and Roc M. Cutri and Stephen E. Schneider},
  journal={The Astrophysical Journal},
  pages={566 - 579}
We measured the K-band luminosity function using a complete sample of 4192 morphologically typed 2MASS galaxies with μ = 20 mag arcsec-2 isophotal magnitudes 7 < K20 < 11.25 mag spread over 2.12 sr. Early-type (T ≤ -0.5) and late-type (T > -0.5) galaxies have similarly shaped luminosity functions, αe = -0.92 ± 0.10 and αl = -0.87 ± 0.09. The early-type galaxies are brighter, MK*e = -23.53 ± 0.06 mag compared to MK*l = -22.98 ± 0.06 mag, but less numerous, n*e = (0.45 ± 0.06) × 10-2 h3 Mpc-3… 

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