Browsing by Subject "Periodogram"

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Periodogram Analysis of the Light Curves of 44 TAU

Gupta, S. K (Astronomical Society of India, 1979-03)

The periodogram analysis of the light curves of the delta Scuti star 44 Tau (=HR 1287) has been carried out. The Fundamental period of 44 TAU, based on the epochs of maximum, is found to be 0.d144969 and the beat period ...
Possible Evidence of Long-Term Oscillations in the Solar Atmosphere

Raju, K. P; Singh, J; Srikanth, R; Chou, Dean-Yi; CA, TON team (Springer, 2001-03)

We have obtained the temporal correlation function, Q(t), from time sequences of Caii K filtergrams and Dopplergrams from Antarctica, Taiwan Oscillation Network (TON) and Solar and Heliospheric Observatory (SOHO). Q(t) ...
Search for variable stars in the open cluster NGC 2509

Dar, A. A; Parihar, P. S; Saleh, P; Malik, M. A (Elsevier B.V, 2018-10)

This work presents the first photometric variability survey of the open cluster NGC 2509 carried out in February, 2017. Data of four nights was analysed by ensemble photometry technique, using 1k Ã— 1k CCD and 1.3 m telescope ...

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