->Definitions of the magnitude system.
->Definitions of magnitude terms and relations.
Distance modulus of the sun = 31.57
|Visual||mV = V = -26.78||MV = +4.79|
|Blue||B = -26.16||MB = +5.41|
|Ultraviolet||U = -26.06||MU = +5.51|
|Bolometric||mbol = -26.85||Mbol = +4.72|
Distance to the Sun = 1 A.U. = 1.50 1011 m = 4.85 10-6 pc.
Some confusion exists in the litterature when luminosities are quoted either in units of bolometric solar units (which make sense) or in in-band (e.g. B) solar luminosities (which do not make sense as the Sun is rarely a reference). It is therefore useful to compute the in-band B luminosity of the Sun, in units of bolometric solar luminosity. using the values for m=0 flux densities, the Sun has a B-Band flux density of 1.29 1014 Jy. This gives us the relations: