Astro(physical) constants
Parameters SymbolSI value Equivalent values Units Speed of light c299792458 m s-1 29979245800299792.4581079252848.863241.07708426 cm s-1km s-1km hr-1AU yr-1 Planck’s constant…
HTML/JS: Kepler’s third law of planetary motion
Calculations for Kepler’s third law for a point-like mass and two comparable masses.
HTML/JS: The temperature scales
Calcluators for to-and-fro conversion of Celcius, Fahrehnhite, Rankine, and Kelvin temperature scales.
The Newton-Kepler law of planetary motion
What is Newton-Kepler law of planetary motion? How is it different from the Kepler’s third law of planetary motion? And more.
Applying Kepler’s third law to our solar system
This post discusses the usage of Kepler’s third law in case of our solar system. How it can be used to determine the semi-major axis given a planet’s time period and vice versa.
What do Kepler’s laws tell us about the orbits?
The famous Kepler’s law of planetary motion are discusses with mathematical derviations.
Results obtained from the MaStar data files
This post is the end result for the MaStar data processing. The parameters obtained through the given effective temperature, surface gravity, and the PSF magnitudes like mass, radius, luminosity, distance, flux etcetera are all discussed and visualized.
What are color indices? Why are they important?
This post gives an overview of how telescopes gather data about celestial objects, how filter works, the SDSS ugriz filters, their conversion to UBVRI, color indices, how they can be determined and what do they have to do with temperature of stars.
How to find stellar distances using the MaStar catalog?
This post discusses the methods of determining the distance to stars using the SDSS MaStar data magnitudes.
For g, r, and I filters for the PSF magnitudes provided the magnitudes were first converted to physical flux densities. The flux densities were then converted to flux, then the fluxes to radius using the flux-radius-luminosity relationship. After determining the distance, the apparent magnitudes were converted to absolute magnitudes of the star
What are stellar magnitudes? How to determine them?
Stellar magnitudes play an important role in classifying the stars. This post discusses both the apparent and absolute magnitudes of the star and the relationships from which these parameters can be obtained.