Pseudo-evolution of galaxies in Lambda CDM cosmology
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10406401" target="_blank" >RIV/00216208:11320/19:10406401 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~Aw8gW1Vby" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~Aw8gW1Vby</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stz2027" target="_blank" >10.1093/mnras/stz2027</a>
Alternative languages
Result language
angličtina
Original language name
Pseudo-evolution of galaxies in Lambda CDM cosmology
Original language description
Our knowledge about galaxy evolution comes from transforming observed galaxy properties at different redshifts to comoving physical scales. This transformation depends on using a cosmological model. Here, the effects of unintentional mixing of two different cosmological models on the size evolution of galaxies is studied. As a gedanken experiment, a galaxy of fixed proper size and luminosity is moved across different redshifts. The apparent size of this galaxy is then interpreted with a cosmological model presumed by the observer, which is different compared to the cosmology exhibited by the Universe. in such a case, a spurious size evolution of the galaxy is observed. A galaxy behaving according to the R-h = ct and Neumann's cosmology, when interpreted with the Lambda cold dark matter (Lambda CDM) cosmological model, shows an increase in size by a factor of 1.1 and 1,3 from z = 7.5 to approximate to 0, respectively. The apparent size of a galaxy in a static Euclidean cosmology, when interpreted in the Lambda CDM model, shows a factor of 23,8 increase in size between z = 7.5 to approximate to 0. This is ill close agreement with the observational data with a size increase of a factor of 6.8 between z = 3.2 to approximate to 0, Furthermore, using the apparent size data, it is shown that the difference between the derived proper sizes in R-h = ct, Neumann's and Lambda CDM cosmological models are minimal.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
—
Volume of the periodical
488
Issue of the periodical within the volume
3
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
3876-3883
UT code for WoS article
000485158400066
EID of the result in the Scopus database
—