000006685 001__ 6685
000006685 005__ 20240130112338.0
000006685 037__ $$aSCART-2024-0053
000006685 100__ $$aSarkar, Mrinmoy
000006685 245__ $$aAmplitude Modulation in a δ Scuti star HD 118660
000006685 260__ $$c2024
000006685 520__ $$aIn this paper, we report the detection of amplitude modulation in a δ Scuti star HD118660. We found that the p-mode frequency at 24.3837 d^{−1} varies periodically in amplitude with frequency 0.0558 ± 0.00147 d^{−1}. However, all other modes are stable in both amplitude and phase which is clear evidence of non-conservation of visible pulsation mode energy. We constructed a two-frequency model by superimposing two sinusoïds with frequencies ν_1 = 24.3837 d^{−1} and ν_2 = 24.4420 d^{−1} and corresponding phases φ_1 = 0.5211 rad and φ_2 = 0.9481 rad to mimic the observed variations of amplitude and phase with time. The plausible explanation of the amplitude modulation in HD 118660 is due to beating of two unresolved closed frequencies ν_1 and ν_2.
000006685 536__ $$aBL/$$c33/$$fIN12 (BINA)
000006685 594__ $$aNO
000006685 6531_ $$aStars: individual: HD118660
000006685 6531_ $$aStars: amplitude modulation
000006685 6531_ $$aTESS: δ Scuti pulsator
000006685 6531_ $$aChemically peculiar
000006685 6531_ $$aStars: oscillations
000006685 700__ $$aJoshi, Santosh
000006685 700__ $$aDe Cat, Peter
000006685 773__ $$pBulletin de la Société Royale des Sciences de Liège$$v93$$y2024
000006685 8560_ $$fpeter.decat@ksb-orb.be
000006685 8564_ $$s1524841$$uhttp://publi2-as.oma.be/record/6685/files/23bina_Poster_Sarakar.pdf
000006685 8564_ $$s12801$$uhttp://publi2-as.oma.be/record/6685/files/23bina_Poster_Sarakar.jpg?subformat=icon-180$$xicon-180
000006685 8564_ $$s29151$$uhttp://publi2-as.oma.be/record/6685/files/23bina_Poster_Sarakar.gif?subformat=icon$$xicon
000006685 905__ $$ain press to
000006685 980__ $$aREFERD