New Hot Subdwarf Stars Identified in Gaia DR2 with LAMOST DR5 Spectra. II.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F19%3A00511508" target="_blank" >RIV/67985815:_____/19:00511508 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4357/ab2edc" target="_blank" >https://doi.org/10.3847/1538-4357/ab2edc</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/ab2edc" target="_blank" >10.3847/1538-4357/ab2edc</a>
Alternative languages
Result language
angličtina
Original language name
New Hot Subdwarf Stars Identified in Gaia DR2 with LAMOST DR5 Spectra. II.
Original language description
Together with the 294 hot subdwarf stars found by Lei et al., we identified 682 hot subdwarf stars in total by using the Gaia HR-diagram and LAMOST spectra. These results demonstrate the efficiency of our method to combine large surveys to search for hot subdwarf stars. We found a distinct gap in our He-sdOB stars based on their He abundance, which is also presented in extreme horizontal branch (EHB) stars of the globular cluster omega Cen. The number fraction of the sample size for the two subgroups is very different between the two counterparts. However, the distinct gap between the H-sdB stars and He-sdOB stars in omega Cen is not visible in our sample. More interestingly, the He-sdB population with the highest He abundance in our sample is completely missing in omega Cen. The discrepancy between our field hot subdwarf stars and the EHB stars in omega Cen indicate different origins for the two counterparts.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA18-20083S" target="_blank" >GA18-20083S: Gaia-GALEX survey of hot subdwarf stars</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
1538-4357
e-ISSN
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Volume of the periodical
881
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
135
UT code for WoS article
000482527100018
EID of the result in the Scopus database
2-s2.0-85072315871