The detection of magnetic chemically peculiar stars using Gaia
BP/RP spectra

J 2022

The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra

PAUNZEN, Ernst a Michal PRIŠEGEN

Základní údaje

Originální název

The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra

Autoři

PAUNZEN, Ernst (40 Rakousko, garant, domácí) a Michal PRIŠEGEN (703 Slovensko, domácí)

Vydání

Astronomy and Astrophysics, EDP Sciences, 2022, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL URL

Impakt faktor

Impact factor: 6.500

Kód RIV

RIV/00216224:14310/22:00128422

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1051/0004-6361/202244839

UT WoS

000886158700008

Klíčová slova anglicky

stars; chemically peculiar; magnetic field; statistics; techniques; spectroscopic

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 31. 1. 2023 09:18, Mgr. Marie Šípková, DiS.

Anotace

V originále

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.

Citovat

PAUNZEN, Ernst a Michal PRIŠEGEN. The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra. Astronomy and Astrophysics. EDP Sciences, 2022, roč. 667, November, s. 1-4. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202244839.

@article{2251360,
   author = {Paunzen, Ernst and Prišegen, Michal},
   article_number = {November},
   doi = {http://dx.doi.org/10.1051/0004-6361/202244839},
   keywords = {stars; chemically peculiar; magnetic field; statistics; techniques; spectroscopic},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra},
   url = {https://arxiv.org/pdf/2210.02433.pdf},
   volume = {667},
   year = {2022}
}

TY  - JOUR
ID  - 2251360
AU  - Paunzen, Ernst - Prišegen, Michal
PY  - 2022
TI  - The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra
JF  - Astronomy and Astrophysics
VL  - 667
IS  - November
SP  - 1-4
EP  - 1-4
PB  - EDP Sciences
SN  - 00046361
KW  - stars
KW  - chemically peculiar
KW  - magnetic field
KW  - statistics
KW  - techniques
KW  - spectroscopic
UR  - https://arxiv.org/pdf/2210.02433.pdf
N2  - 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.
ER  -

PAUNZEN, Ernst a Michal PRIŠEGEN. The detection of magnetic chemically peculiar stars using Gaia BP/RP spectra. \textit{Astronomy and Astrophysics}. EDP Sciences, 2022, roč.~667, November, s.~1-4. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/202244839.

Podrobný výpis o publikaci