The Spectrum of an Ordinary Main-Sequence Star Is a

question 253

Multiple Choice

The spectrum of an ordinary main-sequence star is a

• A) continuum of colors, crossed by brighter lines caused by emission from the hot atoms and molecules on the star's surface.
• B) smooth continuum of color, peaking at a specific wavelength whose position depends on the star's surface temperature.
• C) series of emission lines, mostly from hydrogen, the major constituent of stellar surfaces, that occasionally overlap to produce sections of continuous color.
• D) continuum of colors crossed by dark absorption lines caused by absorption by cooler atoms and molecules at the star's surface.

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