A new approach to periodogram analyses

view Abstract Citations (98) References (8) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A new approach to periodogram analyses. Gray, D. F. ; Desikachary, K. Abstract We present a method for Fourier analyzing quasi-periodic light and radial velocity variations. The scheme gives a particularly clear interpretation to the periodogram, reduces the alias problem, allows detection of very weak components, has potential for greater precision in frequency measurement, and is a shorter computation than the usual method. Our development points out the possibility of error in evaluating the zero-frequency component by the usual method. We derive, under appropriate assumptions, a rigorous evaluation of the phase of each component. Subject headings: pulsation - variable stars Publication: The Astrophysical Journal Pub Date: April 1973 DOI: 10.1086/152068 Bibcode: 1973ApJ...181..523G full text sources ADS | data products SIMBAD (1)