Do galaxies that leak ionizing photons have extreme outflows?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00484655" target="_blank" >RIV/67985815:_____/17:00484655 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201730610" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201730610</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201730610" target="_blank" >10.1051/0004-6361/201730610</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Do galaxies that leak ionizing photons have extreme outflows?

Popis výsledku v původním jazyce

We compare the galactic outflow properties of confirmed Lyman continuum (LyC) leaking galaxies to a control sample of nearby star-forming galaxies to explore whether the outflows from leakers are extreme as compared to the control sample. We find that the Si II and Si III equivalent widths of the LyC leakers reside on the low-end of the trend established by the control sample. The leakers' velocities are not statistically different than the control sample, but their absorption line profiles have a different asymmetry: their central velocities are closer to their maximum velocities. This possibly indicates a more rapidly accelerated outflow due to the compact size of the leakers. The outflow kinematics and equivalent widths are consistent with the scaling relations between outflow properties and host galaxy properties - most notably metallicity - defined by the control sample. Additionally, we use the Ly alpha profiles to show that the Si II equivalent width scales with the Ly alpha peak velocity separation.

Název v anglickém jazyce

Do galaxies that leak ionizing photons have extreme outflows?

Popis výsledku anglicky

We compare the galactic outflow properties of confirmed Lyman continuum (LyC) leaking galaxies to a control sample of nearby star-forming galaxies to explore whether the outflows from leakers are extreme as compared to the control sample. We find that the Si II and Si III equivalent widths of the LyC leakers reside on the low-end of the trend established by the control sample. The leakers' velocities are not statistically different than the control sample, but their absorption line profiles have a different asymmetry: their central velocities are closer to their maximum velocities. This possibly indicates a more rapidly accelerated outflow due to the compact size of the leakers. The outflow kinematics and equivalent widths are consistent with the scaling relations between outflow properties and host galaxy properties - most notably metallicity - defined by the control sample. Additionally, we use the Ly alpha profiles to show that the Si II equivalent width scales with the Ly alpha peak velocity separation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GJ17-06217Y" target="_blank" >GJ17-06217Y: Únik ionizujícího záření z galaxií</a><br>

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

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Svazek periodika

605

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

19

Strana od-do

"A67/1"-"A67/19"

Kód UT WoS článku

000412231200035

EID výsledku v databázi Scopus

2-s2.0-85029299335