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Unit 2: Star Composition Lab Portfolio

19. It is a spectral type M star. Using the table above, what spectral features does Kapteyn's Star have?
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1 point
Helium, some hydrogen
Strong titanium oxide and some calcium
Hydrogen and ionized metals such as calcium and iron
Both metals and ionized metals, especially ionized calcium

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
2 months ago

Kapteyn's Star is classified as a spectral type M star. M stars are characterized by their cool temperatures and specific spectral features. Based on the characteristics of M stars, the correct answer for the spectral features of Kapteyn's Star would be:

**Strong titanium oxide and some calcium.**

This is because M stars typically exhibit strong titanium oxide (TiO) bands in their spectra, along with some absorption lines from metals like calcium.