Identifying Ae/Be stars in Gaia low-resolution BP/RP spectra

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00139676" target="_blank" >RIV/00216224:14310/24:00139676 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.astro.sk/caosp/Eedition/Abstracts/2024/Vol_54/No_4/pp5-14_abstract.html" target="_blank" >https://www.astro.sk/caosp/Eedition/Abstracts/2024/Vol_54/No_4/pp5-14_abstract.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/caosp.2024.54.4.5" target="_blank" >10.31577/caosp.2024.54.4.5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Identifying Ae/Be stars in Gaia low-resolution BP/RP spectra

Popis výsledku v původním jazyce

Classical Be, and Herbig Ae/Be stars are mainly characterized by emission in the H alpha and H beta lines. These lines are essential to understanding the formation of massive stars and describing mass loss and stellar winds during stellar evolution. This study aims to characterize and detect classical Be and Herbig Ae/Be stars in Gaia BP/RP spectra, which allow us to investigate the complete stellar spectral range. Synthetic Delta a and H alpha alpha index magnitude values were calculated from Gaia BP/RP spectra. Colour-colour diagrams were employed to distinguish emission-line objects from normal stars. With the proposed method here, we could unambiguously retrieve 90% of a sample of wellknown emission-line objects. This shows that analyzing the 520 nm and H alpha alpha region efficiently discriminates emission-line objects from normal stars. No further assumptions about astrophysical parameters such as reddening, effective temperature, or IR excess are necessary.

Název v anglickém jazyce

Identifying Ae/Be stars in Gaia low-resolution BP/RP spectra

Popis výsledku anglicky

Classical Be, and Herbig Ae/Be stars are mainly characterized by emission in the H alpha and H beta lines. These lines are essential to understanding the formation of massive stars and describing mass loss and stellar winds during stellar evolution. This study aims to characterize and detect classical Be and Herbig Ae/Be stars in Gaia BP/RP spectra, which allow us to investigate the complete stellar spectral range. Synthetic Delta a and H alpha alpha index magnitude values were calculated from Gaia BP/RP spectra. Colour-colour diagrams were employed to distinguish emission-line objects from normal stars. With the proposed method here, we could unambiguously retrieve 90% of a sample of wellknown emission-line objects. This shows that analyzing the 520 nm and H alpha alpha region efficiently discriminates emission-line objects from normal stars. No further assumptions about astrophysical parameters such as reddening, effective temperature, or IR excess are necessary.

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/GA23-07605S" target="_blank" >GA23-07605S: Osud galaktických otevřených hvězdokup</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Contributions of the Astronomical Observatory Skalnaté Pleso

ISSN

1335-1842

e-ISSN

1336-0337

Svazek periodika

54

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

10

Strana od-do

5-14

Kód UT WoS článku

001322793100001

EID výsledku v databázi Scopus

2-s2.0-85204530711