Open AccessTesting the bivariate series of Mira light curve rise and fall times for changes
Author(s) -
Lombard Fred,
Koen Chris,
Potgieter Diederick
Publication year - 2001
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2001.04537.x
Subject(s) - physics , light curve , bivariate analysis , series (stratigraphy) , astrophysics , astronomy , statistical physics , statistics , paleontology , mathematics , biology
The American Association of Variable Star Observers supplies the astronomical community with a large data base of times of light maxima and minima of Mira (long‐period pulsating) stars. Period change studies using these data invariably use either times between maxima, or those between minima. A statistical analysis based on the two‐component time series of light curve rise and fall times is developed. The results, which enable one to detect changes in the shapes of light curves, are applied to observations of seven long‐period variables.