The persistent Be enigma: The case of HD 212044

We present an analysis of the Be star HD 212044 that reveals intriguing correlations between photometric variations, circumstellar disk emission, and frequencies. Our findings, based on data from the Transiting Exoplanet Survey Satellite (TESS) mission, show an unexpectedly strong negative correlation between photometric brightness and H α equivalent width, challenging the established understanding of the behavior of Be star seen at low inclination angles. Notably, beating episodes precede brightening events. This study suggests that the variability of HD 212044 may be due to additional mechanisms.

Authors

Publication Details

Journal
Astronomy and Astrophysics
Published
2024-10-16
DOI
https://doi.org/10.1051/0004-6361/202452215
Citations
3
Primary Topic
Stellar, planetary, and galactic studies
Type
article
Field-Weighted Citation Impact
0.99

Funders

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article

The persistent Be enigma: The case of HD 212044

M. Emílio, E. Janot-Pacheco, L. Andrade, Alan W. Pereira
3 citations
Astronomy and Astrophysics
Stellar, planetary, and galactic studies
0.99
article

The persistent Be enigma: The case of HD 212044

M. Emílio, E. Janot-Pacheco, L. Andrade, Alan W. Pereira
article en
3 citations

Abstract

We present an analysis of the Be star HD 212044 that reveals intriguing correlations between photometric variations, circumstellar disk emission, and frequencies. Our findings, based on data from the Transiting Exoplanet Survey Satellite (TESS) mission, show an unexpectedly strong negative correlation between photometric brightness and H α equivalent width, challenging the established understanding of the behavior of Be star seen at low inclination angles. Notably, beating episodes precede brightening events. This study suggests that the variability of HD 212044 may be due to additional mechanisms.

Astronomy and AstrophysicsVol. 691
Fundação de Amparo à Pesquisa do Estado de São Paulo, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Fundação Araucária
Openalex Percentile: Top 23%
Stellar, planetary, and galactic studies
0.99
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