Study of gravitational fields and globular cluster systems of early-type galaxies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00517317" target="_blank" >RIV/67985815:_____/19:00517317 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1051/0004-6361/201834675" target="_blank" >https://doi.org/10.1051/0004-6361/201834675</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201834675" target="_blank" >10.1051/0004-6361/201834675</a>

Result language

angličtina

Original language name

Study of gravitational fields and globular cluster systems of early-type galaxies

Original language description

Successful Lambda CDM fits are found for all galaxies, but compared to the theoretical HMCR and SHMR, the best-fit halos usually have concentrations that are too low and stellar masses that are too high for their masses. This might be because of tidal stripping of the halos or because ETGs and LTGs occupy different halos. Most galaxies can be fitted by the MOND models successfully as well, but for some of the galaxies, especially those in centers of galaxy clusters, the observed GC velocity dispersions are too high. This might be a manifestation of the additional dark matter that MOND requires in galaxy clusters. Additionally, we find many signs that the GC systems were perturbed by galaxy interactions. Formal statistical criteria prefer the best-fit Lambda CDM models over the MOND models, but this might be due to the higher flexibility of the Lambda CDM models. The MOND approach can predict the GC velocity dispersion profiles better.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

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Volume of the periodical

625

Issue of the periodical within the volume

May

Country of publishing house

FR - FRANCE

Number of pages

46

Pages from-to

A32

UT code for WoS article

000467131000001

EID of the result in the Scopus database

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