Question

After a lot of work, a group of graduate students has finally measured the wavelengths of many dozens of lines in the spectrum of a distant star. If a number of the lines come from molecules such as titanium oxide, the star is likely to be which spectral type:

Answer 1

Answer:

A Red Dwarf Star

Explanation:

Red dwarf stars have masses of about 0.08 to 0.6 times that of the Sun. There are other objects smaller than red dwarf stars that are called brown dwarfs but do not shine through thermonuclear hydrogen fusion. Red dwarfs are considered to be the most numerous type of star.

Red dwarfs are the coldest stars and, according to the Hertzsprung-Russell diagram, have a spectral type M with a surface temperature between 1700K and 3200K and are also the faintest (0.04).

It is precisely because these stars are so cold that the metallic spectral lines are very prominent and specifically the lines of the Titanium oxide are very prominent.