Caption: Cartoon of a stellar structure model (i.e., interior stellar structure model) of the Sun (CK-263) showing the "runs" (i.e., distributions) of interior luminosity, interior mass, density, and temperature as functions radius in units of the solar radius R_☉ = 6.957*10**5 km = 109.1 R_⊕ = 4.650*10**(-3) AU.
Features:
_________________________________ Table: Center and Photosphere Quantities of the Sun _________________________________ Center Photosphere _________________________________ R (m) 0 6.96*10**8 L (W) 0 3.828 *10**26 M (kg) 0 1.98855 *10**30 Density 150 2.18 *10**(-7) (g/cm**3) T (K) 15.7 5772 *10**6 Pressure 2.33 0.827 (Earth *10**11 atmos- pheres) _________________________________References: Cox-342, Wikipedia: Sun.
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In particular, the pressure at the Sun's center is huge as it must be to hold up the Sun against the force of gravity acting on the Sun's own mass (i.e., against the Sun's self-gravity) and trying to collapse Sun.
Note that only the pressure force can support astronomical objects against their own self-gravity for astronomical objects more massive than a small asteroid and unsupported by kinetic energy.
λ_max = 2897.7685(51) micron-K / 5772 K ≅ 0.5015 microns which is in the visible range 0.4--0.7 microns.
The maximum is, in fact, in the green light band (fiducial range 0.495--0.570 μm) which means there is a lot of green light in the solar spectrum (but NOT that green light dominates the solar spectrum) just where psychophysical response peaks (see file Electromagnetic Radiation (EMR) file: human_luminosity_function.html), but the psychophysical response to sunlight is what we call white light. For further discussion of star colors, see file Blackbody file: blackbody_spectra.html#Star Colors.