photometric and spectroscopic variability of the b5iiie star hd171219
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ID: 194873
2017
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Abstract
We analyzed the Be star HD171219, observed with the CoRoT satellite during a 77.56 day run, in order to determine its physical and pulsation characteristics. Highresolution ground-based spectroscopic observations with HARPS and SOPHIE were also obtained during the month preceding the CoRoT observations. Twenty frequencies have been detected in the object, some of them compatible with non-radial g-modes, including a quintuplet centered around 1.113 c/d (12.88 μHz) identified as a pulsation of degree ℓ ∼ 2. The star underwent at least 6 small outbursts during the CoRoT observations. The relative intensity of the main frequencies varied after each outburst suggesting that the stability of the star and the feeding of the envelope are linked to the pulsation regime ([1]).
| Reference Key |
laerte2017epjphotometric
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| Authors | ;Andrade Laerte;Janot-Pacheco Eduardo;Emilio Marcelo;Frémat Yves |
| Journal | utilitas mathematica |
| Year | 2017 |
| DOI |
10.1051/epjconf/201715204004
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