All Questions
Tagged with light-curve variable-star
7
questions
2
votes
0
answers
67
views
Finding the uncertainty in period for String-Length Minimization calculation
I wrote a Python script that calculates the period of an unevenly sampled data set using the String-Length Minimization method.
You can read about that method here: A period-finding method for sparse ...
- 333
2
votes
1
answer
377
views
How does one actually fold a light curve?
I'm studying the variable stars (periodic variables with brightness changes repeating over time), and to examine the shape of the light curve it is useful to fold the data points at this period and ...
- 49
2
votes
2
answers
90
views
What determines how accurate a particular method is at finding the period between Lomb-Scargle and String Length Minimization?
I've been using the Lomb-Scargle and String Length Minimization methods to find the periods of various astronomical objects with unevenly spaced data. I wanted to see if I could find any patterns ...
- 333
2
votes
1
answer
57
views
What does a fitted curve for the period of a variable star, tell me about the star?
If I have enough data of a variable star to make a light curve for it's whole period, and If I fit a function to that light curve, can that fitted function tell me anything about the properties of ...
- 333
5
votes
1
answer
140
views
How do you tell if a variable star is periodic or not by its light curve?
I have light curves for a particular star. I'm able to construct a periodogram of the stars' light curve, a plot of the power of the light curve vs. the signal's period. For a nonperiodic but ...
- 65
3
votes
2
answers
97
views
Calibrating raw photometric measurements
So I have a photometry data sourced from Solar Mass Ejection Imager's (SMEI) server as an ‘add-on data’ for my point source of interest (a variable star) with a 104 minute cadence. However, it’s not ...
- 105
2
votes
1
answer
107
views
What are these data in light curve generator
I'm generating light curves for some variable stars on the AAVSO website (see https://www.aavso.org/lcg ) . I can choose what type of data must be plotted. Can you explain what they are?
Thank you in ...
