Low-metallicity massive single stars with rotation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00640401" target="_blank" >RIV/67985815:_____/24:00640401 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0370806" target="_blank" >https://hdl.handle.net/11104/0370806</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.59849/2078-4163.2024.6" target="_blank" >10.59849/2078-4163.2024.6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Low-metallicity massive single stars with rotation

Popis výsledku v původním jazyce

Massive low-metallicity stars are essential for understanding cosmic history. These stars are thought to be the progenitors of certain types of supernovae, gamma-ray bursts, and gravitational wave-emitting mergers. These exotic phenomena contribute to their host galaxies through intense ionising radiation and energy and momentum feedback. To better understand the nature of these stars and to quantify the feedback from them to their host galaxies, spectroscopic observations of these stars and their analyses are of great importance. We focus on a certain type of very metal-poor (0.02 Z⊙) hot massive single stars that rotate fast and evolve chemically homogeneously. Combining state-of-the-art theories of stellar evolution and stellar atmosphere modelling, we predict synthetic spectra and wind properties of these stars corresponding to different masses and evolutionary phases. The Hubble Space Telescope’s Ultraviolet Legacy Library of Young Stars as Essential Standards (ULLYSES) project will allow us to compare our predicted spectra with observations of stars of similar nature (e.g. metal-poor stars in Sextant A).

Název v anglickém jazyce

Low-metallicity massive single stars with rotation

Popis výsledku anglicky

Massive low-metallicity stars are essential for understanding cosmic history. These stars are thought to be the progenitors of certain types of supernovae, gamma-ray bursts, and gravitational wave-emitting mergers. These exotic phenomena contribute to their host galaxies through intense ionising radiation and energy and momentum feedback. To better understand the nature of these stars and to quantify the feedback from them to their host galaxies, spectroscopic observations of these stars and their analyses are of great importance. We focus on a certain type of very metal-poor (0.02 Z⊙) hot massive single stars that rotate fast and evolve chemically homogeneously. Combining state-of-the-art theories of stellar evolution and stellar atmosphere modelling, we predict synthetic spectra and wind properties of these stars corresponding to different masses and evolutionary phases. The Hubble Space Telescope’s Ultraviolet Legacy Library of Young Stars as Essential Standards (ULLYSES) project will allow us to compare our predicted spectra with observations of stars of similar nature (e.g. metal-poor stars in Sextant A).

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA22-34467S" target="_blank" >GA22-34467S: Interakce dvojhvězd na větvi červených obrů: horcí podtrpaslíci jako testovací případ.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Astronomical Journal of Azerbaijan

ISSN

2078-4163

e-ISSN

2078-4171

Svazek periodika

19

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

AZ - Ázerbájdžánská republika

Počet stran výsledku

10

Strana od-do

6-15

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-105027297301