Physics on transitions
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by
iliasgreece
Hello everyone,i would like to ask something that i really want to find out.Considering a transit where the orbit of the planet is circular,how can we find the distance r between the planet and the parent star,combining the time the planet needs to complete a whole orbit around the star and the time it completes the transition?Thanks for any answer given.
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by
Martti_Holst_Kristiansen
in response to iliasgreece's comment.
Hi iliasgreece,
If you know the planetary transit depth and transit duration time and the apparent magnitude, surface temperature, radius and mass of the star you can use this calculator to derive the orbital distance of the planet (r) and the period (one orbit): http://www.kianjin.com/pcalc.html.
For further details take a look at: http://kepler.nasa.gov/Science/about/characteristicsOfTransits/.
There are different ways to determine the planetary transit duration time and transit depth. I use a program called LcTools written by Allan Schmitt. If you are interested in obtaining this product you will have to contact him personally: aschmitt@comcast.net. You can learn more about the program here: https://dl.dropboxusercontent.com/u/78120543/LcTools/LcTools Product Description.htm.
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by
iliasgreece
I appreciate your pieces of information.My physics professor in high school gave me useful information in a case where the vision of the observer and the orbit of planet is complanar,but i would like to find more formulas about this kind of physic.Thank you very much for your answer.
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