Sentences with phrase «absolute luminosity»

If this is the case, it would explain both the low value of the total bolometric flare energy (as the absolute luminosity of the superflare stars and thus the total bolometric flare energy would be larger) and the S index (as the light entering the fibre would likely be contaminated and the observed emission in the H and K lines would therefore be relatively small).

The peak absolute luminosity appears to be about 50,000 times the luminosity of the Sun, but the largest percentage of known open clusters has a brightness equivalent to 500 solar luminosities.

They have absolute luminosities as bright as any star in the Galaxy — on the order of one million times the luminosity of the Sun.

Not exact matches

RR - Lyrae have the same time - averaged luminosity (about 49 solar luminosities or an absolute magnitude MV = +0.6).

This diagram is a plot of luminosity (absolute magnitude) against the colour of the stars ranging from the high - temperature blue - white stars on the left side of the diagram to the low temperature red stars on the right side.

Proxima is a red dwarf of spectral class M6 Ve with an absolute magnitude of +15.60, which is only a small fraction of the Sun's luminosity.

Adopting our value of 1200 light years, the intrinsic luminosity of the gaseous nebula is about 100 times that of the Sun (about -0.5 Mag absolute) while the star is at about +6 (1/3 of the Sun) and the companion at +9.

The star may have around 1.01 to 1.28 times Sol's mass (Yoichi Takeda, 2007; Valenti and Fischer, 2005; Klaus Fuhrmann, 1998, page 166; and NASA Stars and Exoplanet Database; and David F. Gray, 1992), around 1.33 to 1.39 times Sol's diameter (Klaus Fuhrmann, 1998, page 166; NASA Stars and Exoplanet database; and Kenneth R. Lang, 1980); and around 1.9 to 2.2 times its bolometric luminosity (Klaus Fuhrmann, 1998, page 166 for absolute bolometric magnitude; NASA Stars and Exoplanet database; and Kenneth R. Lang, 1980).

Ok, I did a preliminary check on the Extrasolar Planet Encyclopedia; I converted all stellar apparent magnitudes to absolute magnitudes, those to luminosity (* solar), and calculated the inner and outer boundaries of the HZ, generously assuming an inner edge of 0.9 AU and an outer edge of 1.5 AU for our own solar system.

Luminosity is an absolute measure of radiant power; that is, its value is independent of an observer's distance from an object.

It has a visual magnitude of 7.5 and an absolute magnitude of -0.5, which means that the nebula has an intrinsic luminosity roughly 100 times that of the Sun.