The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00128422" target="_blank" >RIV/00216224:14310/22:00128422 - isvavai.cz</a>
Result on the web
<a href="https://arxiv.org/pdf/2210.02433.pdf" target="_blank" >https://arxiv.org/pdf/2210.02433.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202244839" target="_blank" >10.1051/0004-6361/202244839</a>
Alternative languages
Result language
angličtina
Original language name
The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra
Original language description
Context. The magnetic chemically peculiar (mCP) stars of the upper main sequence are perfectly suited to studying the effects of rotation, diffusion, mass-loss, accretion, and pulsation in the presence of an organized stellar magnetic field. Therefore, many important models can only be tested with this star group. Aims. In this case study we investigate the possibility of detecting the characteristic 520 nm flux depression of mCP stars using low-resolution BP/RP spectra of the Gaia mission. This would enable us to effectively search for these objects in the ever-increasing database. Methods. We employed the tool of Δa photometry to trace the 520 nm flux depression for 1240 known mCP and 387 normal-type objects including binaries. To this end, we folded the filter curves with the BP/RP spectra and generated the well-established color-color diagram. Results. It is clearly possible to distinguish mCP stars from normal-type objects. The detection rate is almost 95% for B- and A-type objects. It then drops for cooler-type stars, which is in line with models of the 520 nm flux depression. Conclusions. The BP/RP spectra are clearly qualified to efficiently search for and detect mCP stars.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy and Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
667
Issue of the periodical within the volume
November
Country of publishing house
FR - FRANCE
Number of pages
4
Pages from-to
1-4
UT code for WoS article
000886158700008
EID of the result in the Scopus database
2-s2.0-85145265666