Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 469

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

The K‐Band Galaxy Luminosity Function

Open access
Kochanek, C. S., Pahre, M. A., Falco, E. E., Huchra, J. P., Mader, J., Jarrett, T. H., Chester, T., Cutri, R., Schneider, S. E.·2001·The Astrophysical Journal
DOI 10.1086/322488
Open this paper in CoChat — free account

Abstract

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 < K 20 < 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, α e = -0.92 ± 0.10 and α l = -0.87 ± 0.09. The early-type galaxies are brighter, M K * e = -23.53 ± 0.06 mag compared to M K * l = -22.98 ± 0.06 mag, but less numerous, n * e = (0.45 ± 0.06) × 10 -2 h 3 Mpc -3 compared to n * l = (1.01 ± 0.13) × 10 -2 h 3 Mpc -3 for H 0 = 100 h km s -1 Mpc -1 , such that the late-type galaxies slightly dominate the K -band luminosity density, j late / j early = 1.17 ± 0.12. Including a 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) × 10 8 h L ☉ Mpc -3 , which implies a stellar mass density relative to critical of Ω * h = (1.9 ± 0.2) × 10 -3 for a Kennicutt initial mass function (IMF) and Ω * h = (3.4 ± 0.4) × 10 -3 for a Salpeter IMF. Our morphological classifications are internally consistent, are consistent with previous classifications, and lead to luminosity functions unaffected by the estimated uncertainties in the classifications. These luminosity functions accurately predict the K -band number counts and redshift distributions for K ≲ 18 mag, beyond which the results depend on galaxy evolution and merger histories.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1086/322488

Cites

47 of 47 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 47 references

Cited by

See all 469

Metadata

Authors
Kochanek, C. S., Pahre, M. A., Falco, E. E., Huchra, J. P., Mader, J., Jarrett, T. H., Chester, T., Cutri, R., & Schneider, S. E.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2001-10-20
Volume
560
Issue
2
Pages
566-579
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1086/322488
OpenAlex
W2020547167
Cited by
469
References
47
FWCI
24.44
Type
journal article
Language
en
Open access
bronze

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: The K‐Band Galaxy Luminosity Function. https://app.cochat.ai/papers/10.1086/322488
The paper
Kochanek, C. S., Pahre, M. A., Falco, E. E., Huchra, J. P., Mader, J., Jarrett, T. H., Chester, T., Cutri, R., & Schneider, S. E. (2001). The K‐Band Galaxy Luminosity Function. The Astrophysical Journal. https://doi.org/10.1086/322488

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.