Colours, luminosity functions and counts of galaxies
Clicks: 131
ID: 269135
1996
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Popular Article
30.0
/100
131 views
21 readers
AI Quality Assessment
Not analyzed
Readership in this journal
PopularRanked #22 of 900 articles by views in monthly notices of the royal astronomical society
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 900 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Standard models for deep galaxy counts are based on luminosity functions (LFs) that have a relatively flat faint end (α ∼ − 1.0). Galaxy counts in the B band exceed the prediction of such models from a factor of 2 to more than a factor of 5, forcing the introduction of strong luminosity and/or density evolution. Recently Marzke, Huchra & Geller, using the CfA redshift survey sample, found that the number of galaxies in the range −16 < MZw < − 13 exceeds the extrapolation of a flat faint-end LF by a factor of 2. Here we show that this steep LF substantially contributes to justify the observed blue galaxy counts without invoking strong luminosity and/or density evolution. Furthermore we show that taking into account the variation of the B − K colour as a function of the morphological types and assuming a mean value 〈B − K〉 < 2.5 for dwarf galaxies, we reproduce well also the observed K-band deep galaxy counts. This assumption is supported by the strong correlation we found between B − K colour of galaxies and their infrared absolute magnitude: galaxies become bluer with decreasing luminosity.
| Reference Key |
iovino1996monthlycolours,
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | P. Saracco,G. Chincarini,A. Iovino;P. Saracco;G. Chincarini;A. Iovino; |
| Journal | monthly notices of the royal astronomical society |
| Year | 1996 |
| DOI |
10.1093/mnras/283.3.865
|
| URL | |
| Keywords |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.