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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Svazek periodika

625

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

46

Strana od-do

A32

Kód UT WoS článku

000467131000001

EID výsledku v databázi Scopus

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