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The K ‐Band Galaxy Luminosity Function by C. S. Kochanek; M. A. Pahre; E. E. Falco; J. P. Huchra; J. Mader; T. H. Jarrett; T. Chester; R. Cutri; S. E. Schneider is a Physics and Astronomy article available to read on EtoBox.

What is The K ‐Band Galaxy Luminosity Function about?

We measured the K-band luminosity function using a complete sample of 4192 morphologically typed 2MASS galaxies with mag arcsec~2 isophotal magnitudes mag spread over k Ks \ 20 7 \ K 20 \ 11.25 2.12 sr. Early-type (T 1 [0.5) and late-type (T [ [0.5) galaxies have similarly shaped luminosity functions, and The early-type galaxies are brighter, a e \ [0.92 ^0.10 a l \ [0.87 ^0.09. M Kpe \ [23.53 ^0.06 mag compared to mag, but less numerous, h3 M Kpl \ [22.98 ^0.06 n pe \ (0.45 ^0.06) ] 10~2 Mpc~3 compared to h3 Mpc~3 for h km s~1 Mpc~1, such that the n pl \ (1.01 ^0.13) ] 10~2 H 0 \ 100 late-type galaxies slightly dominate the K-band luminosity density, Including a j late /j early \ 1.17 ^0.12. factor of 1.20 ^0.04 correction for the conversion of the isophotal survey magnitudes to total magnitudes, the local K-band luminosity density is j \ (7.14 ^0.75) ] 108 h Mpc~3, which implies a stellar L \_ mass density relative to critical of for a Kennicutt initial mass function (IMF) ) \* h \ (1.9 ^0.2) ] 10~3 and for a Salpeter IMF. Our morphological classiÐcations are internally con-) \* h \ (3.4 ^0.4) ] 10~3 sistent, are consistent with previous classiÐcations, and lead to luminosity fun

Who reads The K ‐Band Galaxy Luminosity Function?

Author

C. S. Kochanek; M. A. Pahre; E. E. Falco; J. P. Huchra; J. Mader; T. H. Jarrett; T. Chester; R. Cutri; S. E. Schneider

Publisher

American Astronomical Society

Published

2001

Language

EN

Field

Physics and Astronomy (Physical Sciences)