As the pressure and, hence, the energy generation increase with the mass, the MLR is a consequence of the pressure and temperature gradient inside the stars, and its validity extends beyond Eddington's special star models to all stars with a chemically homogeneous interior composition.With the ...
Although the mass–luminosity relationship of the Hyades cluster is poorly determined at present, it is probable that the unevolved stars in the cluster are somewhat undermassive when compared with typical unevolved field stars of the corresponding luminosity. For stars in the general field, there ...
A third new galaxy luminosity function isbuilt starting from a three parameter generalized gamma distribution for themass of galaxies once a simple nonlinear relationship between mass andluminosity is assumed; in this case the number of parameters is five becausethe overall density of galaxies and a ...
The X-Ray Luminosity-Mass Relation for Local Clusters of Galaxies My thesis is centered on investigating scaling relations of galaxy clusters. Focusing on the relationship between soft X-ray luminosity and mass (L-M) for low-redshift clusters of galaxies, I have determined the mean parameters to...
As this figure shows, the stars at the top of the Main Sequence are very massive, the ones in the middle have average mass, and the ones at the bottom have very little mass. We can show the relationship of mass and luminosity more clearly by plotting a Mass-Luminosity Diagram for Main...
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We investigate the relationship between soft \\xray\\ luminosity and mass for low redshift clusters of galaxies by comparing observed number counts to expe... R Stanek,AE Evrard,H Bohringer,... - 《Astrophysical Journal》 被引量: 152发表: 2006年 The 2dF Galaxy Redshift Survey: correlation ...
The functional relationship between stellar magnitude and the number and distribution of stars of each magnitude interval. Also known as relative luminosity factor. The perceived brightness component of a given color, as opposed to its hue or its saturation. The ability of emitting or reflecting ...
The X-Ray Luminosity--Mass Relation for Local Clusters of Galaxies We investigate the relationship between soft \\xray\\ luminosity and mass for low redshift clusters of galaxies by comparing observed number counts to expe... R Stanek,AE Evrard,H Bohringer,... - 《Astrophysical Journal》 被引...
Certainly, the spectral energy distributions of AGNs peak somewhere in the UV to soft X-ray range, as expected for their masses and mass accretion rates. But the observational details do not agree well with this simplest of accretion-disk theories. Expected signatures such as Lyman edges (due...