Kinematic clues to the origins of starless H I clouds: dark galaxies or tidal debris?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00484375" target="_blank" >RIV/67985815:_____/17:00484375 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1093/mnras/stx187" target="_blank" >http://dx.doi.org/10.1093/mnras/stx187</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stx187" target="_blank" >10.1093/mnras/stx187</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Kinematic clues to the origins of starless H I clouds: dark galaxies or tidal debris?

Popis výsledku v původním jazyce

We numerically model the passage of a galaxy through the gravitational field of cluster. The galaxy consists of smoothed particle hydrodynamics particles for the gas and N-bodies for the stars and dark matter, while the cluster includes the gravitational effects of substructure using 400 subhaloes (the effects of the intracluster medium are ignored). We find that harassment can indeed produce long HI streams and these streams can include kinematic features resembling dark galaxy candidates such as VIRGOHI21. We also show that apparent clouds with diameter < 20 kpc and velocity widths < 50 km s(-1) are almost invariably produced in these simulations, making tidal debris a highly probable explanation. In contrast, we show that the frequency of isolated clouds of the same size but velocity width > 100 km s(-1) is negligible - making this a very unlikely explanation for the observed clouds in the Virgo cluster with these properties.

Název v anglickém jazyce

Kinematic clues to the origins of starless H I clouds: dark galaxies or tidal debris?

Popis výsledku anglicky

We numerically model the passage of a galaxy through the gravitational field of cluster. The galaxy consists of smoothed particle hydrodynamics particles for the gas and N-bodies for the stars and dark matter, while the cluster includes the gravitational effects of substructure using 400 subhaloes (the effects of the intracluster medium are ignored). We find that harassment can indeed produce long HI streams and these streams can include kinematic features resembling dark galaxy candidates such as VIRGOHI21. We also show that apparent clouds with diameter < 20 kpc and velocity widths < 50 km s(-1) are almost invariably produced in these simulations, making tidal debris a highly probable explanation. In contrast, we show that the frequency of isolated clouds of the same size but velocity width > 100 km s(-1) is negligible - making this a very unlikely explanation for the observed clouds in the Virgo cluster with these properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Svazek periodika

467

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

3648-3661

Kód UT WoS článku

000398419400090

EID výsledku v databázi Scopus

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