Important considerations of Stellar distance indicators

Periodic luminous pulses are very important for measurements in Cosmology and Astrophysics, and there are very specific methods and sources which exhibit such properties. Stellar astrophysics provides a number of observational and mathematical sources which give a very important tool in understanding the dynamics of an expanding Universe, and in this document, we will consider some important points that have implications from measurements from such Stellar objects. Further, we will also consider the mathematical relations that are important to measure distances of these “Standard Candles” , and how these are important in clearing some important features that have implications in measurements.