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SIMBAD. data. Zeta Puppis (ζ Puppis, abbreviated Zeta Pup, ζ Pup), formally named Naos / naÊŠs /, [11] is the brightest star in the constellation of Puppis. The spectral class of O4 means this is one of the hottest, and most luminous, stars visible to the naked eye. It is one of the sky's few naked-eye class O-type stars as well as one of the ...
The table shows the lifetimes of stars as a function of their masses. [1] All stars are formed from collapsing clouds of gas and dust, often called nebulae or molecular clouds . Over the course of millions of years, these protostars settle down into a state of equilibrium, becoming what is known as a main-sequence star.
Meissa is a soft X-ray source with a luminosity of 10 32 erg s −1 and peak emission in the energy range of 0.2–0.3 keV, which suggests the X-rays are probably being generated by the stellar wind. [20] The stellar wind of Meissa is well characterized by a mass-loss rate of 2.5 × 10 −8 solar masses per year and a terminal velocity of 2,000 ...
A Type I civilization is usually defined as one that can harness all the energy that reaches its home planet from its parent star (for Earth, this value is about 2 × 10 17 watts), which is about four orders of magnitude higher than the amount currently achieved on Earth, with an energy consumption of ≈2 × 10 13 watts by 2020.
Stellar classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.
This is a massive star with about 14 times the mass of the Sun. [8] The interferometer -measured angular diameter of this star, after correction for limb darkening , is 1.77 ± 0.09 mas . [ 19 ] At an estimated distance of 2,218 light-years (680 parsecs ), [ 1 ] this yields a physical size of about 129 times the radius of the Sun . [ 9 ]
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