Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996pasp..108..877j&link_type=abstract
Publications of the Astronomical Society of the Pacific, v.108, p.877
Astronomy and Astrophysics
Astronomy
30
Stars: Variables: Rr Lyrae, Stars: Oscillations
Scientific paper
We discuss a technique to compute using templates developed by fitting a Fourier series to existing high-quality K light curves of field RR Lyraes. We find that a series of order 2 is sufficient to model the light curves of first-overtone RRc variables, but 4 different 6th-order templates are needed for the fundamental RRab stars due to changes in the light curves that appear to correlate with the B amplitude. Applying the appropriate template to single-phase observations yield estimated values whose deviation from the true is randomly distributed over phase, and is of the same order of magnitude as the observational uncertainty, as long as the ephemeris phase is accurate. The addition of a second point, separated by at least 0.2 in phase from the first, allows the use of template-shifting to remove deviations that may arise from uncertainties in the ephemeris phase, and template and scaling factor selection, with final systematic errors reduced to less than 0.03 mag. We find that the use of templates yield superior results to those derived using other techniques, which can produce values that show systematic deviations over phase. (SECTION: Stars)
Carney Bruce W.
Fulbright Jon P.
Jones Victor R.
No associations
LandOfFree
Template K Light Curves for RR Lyrae Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Template K Light Curves for RR Lyrae Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Template K Light Curves for RR Lyrae Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1139811