Deriving Distance Modulus: m - M = 5log(d/10) - Physics Forums
Jun 17, 2006 · The discussion focuses on the derivation of the distance modulus formula, expressed as m - M = 5log (d/10). This formula relates apparent magnitude (m) and absolute magnitude (M) to the …
Stargazing M - M as the distance modulus, and a question about the ...
Feb 8, 2020 · The discussion clarifies the concept of absolute magnitude (M) in astronomy, emphasizing its intrinsic nature as a measure of a star's luminosity. The relationship between absolute magnitude …
Dark Energy Part 3: Fitting the SCP Union 2.1 Supernova Data
Apr 25, 2020 · Specifically, they were able to obtain the “distance modulus” and redshift for hundreds of distant supernovae. That is the SCP Union2.1 data I will fit using EdS and CDM kinematics obtained …
Distance Comparison: Converting 48 Distance Modulus to Meters
May 12, 2015 · hello I have problems with the distance units used in cosmology: I wonder where is located a distant supernova at 48 "distance modulus", compared to the...
Finding the distance modulus and the absolute magnitude
Sep 29, 2007 · The discussion focuses on calculating the distance modulus and absolute magnitude of a star with an apparent magnitude of -0.4 and a parallax of 0.3 arcseconds. The relevant equations …
Distance Modulus of a Star cluster - Physics Forums
Apr 25, 2019 · Homework Statement I need to understand how to figure out the distance modulus to a star. Question: If the distance of modulus of a star cluster is 12, what is the distance? Relevant …
Published data sets for distance modulus versus redshift
Dec 2, 2010 · Does anyone have a recommendation for a paper/source for data relating distance modulus and redshift data over a large range of redshift, such as 0 < z <= 5? I have found that …
Is there a way to convert distance modulus to get H (z) values
Apr 7, 2023 · Hello, Everything is in th summary : I have a set of distance modulus and I would like to know if this is possible to convert numerically these values into a Hubble vs redshift H(z) data ( with …
Comoving distance and redshift relationship derivation
Jun 21, 2017 · The forum discussion centers on the derivation of the comoving distance and redshift relationship, specifically addressing the absence of a minus sign when substituting da with -a²dz. …
Why such strange units of measure? - Physics Forums
Apr 23, 2012 · Why do astronomers and cosmologists prefer to use the Distance Modulus instead of -- rather than in addition to -- Bly (billion light-years) or Mpc (mega parsecs)? Being a LOG10 it distorts …