TY - JOUR
T1 - A photometric study of the southern Blazhko star SS For
T2 - Unambiguous detection of quintuplet components
AU - Kolenberg, K.
AU - Guggenberger, E.
AU - Medupe, T.
AU - Lenz, P.
AU - Schmitzberger, L.
AU - Shobbrook, R. R.
AU - Beck, P.
AU - Ngwato, B.
AU - Lub, J.
PY - 2009/6
Y1 - 2009/6
N2 - We present our analysis of photometric data in the Johnson B and V filter of the southern Blazhko star SS For. In parallel, we analysed the V observations obtained with the All Sky Automated Survey-3 photometry of the star gathered between 2000 and 2008. In the frequency spectra resulting from a Fourier analysis of our data, the triplet structure is detectable up to high order, both in the B and V data. Moreover, we find evidence for quintuplet components. We confirm from our data that the modulation components decrease less steeply than the harmonics of the main frequency. We derived the variations of the Fourier parameters quantifying the light-curve shape over the Blazhko cycle. There is good agreement between the spectroscopic abundance and the metallicity determined from the Fourier parameters of the average light curve. SS For is peculiar as a Blazhko star because of its strong variations around minimum light.
AB - We present our analysis of photometric data in the Johnson B and V filter of the southern Blazhko star SS For. In parallel, we analysed the V observations obtained with the All Sky Automated Survey-3 photometry of the star gathered between 2000 and 2008. In the frequency spectra resulting from a Fourier analysis of our data, the triplet structure is detectable up to high order, both in the B and V data. Moreover, we find evidence for quintuplet components. We confirm from our data that the modulation components decrease less steeply than the harmonics of the main frequency. We derived the variations of the Fourier parameters quantifying the light-curve shape over the Blazhko cycle. There is good agreement between the spectroscopic abundance and the metallicity determined from the Fourier parameters of the average light curve. SS For is peculiar as a Blazhko star because of its strong variations around minimum light.
KW - Stars: individual: SS For
KW - Stars: oscillations
KW - Stars: variable: RR Lyrae
KW - Techniques: photometric
UR - http://www.scopus.com/inward/record.url?scp=66549091432&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2966.2008.14266.x
DO - 10.1111/j.1365-2966.2008.14266.x
M3 - Article
SN - 0035-8711
VL - 396
SP - 263
EP - 275
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -