In:
Astronomische Nachrichten, Wiley, Vol. 333, No. 10 ( 2012-12), p. 1074-1076
Abstract:
We present the analysis of the multicolour CCD observations in the 2010 season of the Blazhko RRc star TV Boo. TV Boo shows a complex Blazhko modulation dominated by two independent modulations with periods P fm1 = 9.74 d and P fm2 = 21.43 d. Both modulation components appear in the frequency spectra as multiplet structures around the harmonics of the pulsation. The positive value of the asymmetry parameter (Q = +0.51) of the primary modulation suggests that it is similar in its character to the Blazhko‐effect of most of the modulated RRab stars. Interestingly, the secondary, lower‐amplitude modulation exhibits a negative asymmetry parameter (Q = −0.22), which is an unusually low value when compared to the Blazhko‐modulated RRab stars. Apart from the two modulation frequencies, the spectra also show an additional frequency f’ and its linear combinations with the pulsation and the primary modulation f 1 + f’ and f 1 − f’ − f m1 . We conclude that the additional frequency most probably belongs to a non‐radial mode (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Type of Medium:
Online Resource
ISSN:
0004-6337
,
1521-3994
DOI:
10.1002/asna.v333.10
DOI:
10.1002/asna.201211826
Language:
English
Publisher:
Wiley
Publication Date:
2012
detail.hit.zdb_id:
2025762-4
detail.hit.zdb_id:
2171222-0
SSG:
16,12
