Stellar Time Series - Overview

Time Series of Beta Lyrae

Missing Image: V* bet Lyr

The time series as made using SMEI data for the binary star system Beta Lyrae. The two stars orbiting each other produces the periodic light curve shown in the image.

Over 6000 bright objects viewed by SMEI (mostly stars) have been fit using an analysis technique developed by Hick et al. (2007) to remove bright point signals from the SMEI heliospheric data base. The current analysis available in this data set is from stellar centroid placement on sky maps where known bright object locations are used to provide its position. The brightness is given in SMEI magnitude (see Buffington et al., 2006; 2007), and is displayed as continuously as possible from all three SMEI cameras. The time series retain some unwanted signals from high energy particle hits and aurorae, both of which can be ascertained to some extent by displaying nearby bright objects to determine if they too contain similar signals. There are some camera to camera mismatches and long term calibration differences not removed in this preliminary data set.

Each measurement is given from the ~1.5 minute passage of the star in the field of view and timed to within a few seconds of the field-of-view passage of the object. A preliminary quick look tool allows the viewer to display these time series and download the digital data from the data set as shown in the example of the eclipsing binary star Beta Lyra in the Figure.