All Questions
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How to calculate a phase shift in the process of deriving Baade-Wesselinke distance?
The above is the equation used in the Baade-Wesselink method to independently get distances to Cepheid variables (in the process of deriving Period-Luminosity relation).
According to the paper New ...
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Which software is appropriate to integrate radial velocity with respect to time [closed]
I'm a high school student and currently I'm trying to use Baade-Wesselink method to independently derive period-luminosity relation of Cepheid variables. I noticed that to get the linear radius ...
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Integrating radial velocity with respect to time
I'm a highschool student who is writing a research paper about plotting Period-Luminosity graph of the Cepheid variables by deriving distance through independent method such as trigonometric parallax ...
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1
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2
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Can we tell how fast bodies are moving away by measuring their frequency?
It's clear the universe is expanding because light from distant bodies, like galaxies, are shifted towards the red side of the spectrum. In other words, the light measured is more red than it should ...
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The moon: how to determine its size, speed and distance from earth using a simple telescope?
Assuming I only have a simple telescope, how can I determine the size of the moon, its angular velocity and distance from earth?
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