Sirius has a tempature of 9,940K. Using the table above, what spectral features does Sirius have?

Question

*
1 point
Helium, some hydrogen
Strong hydrogen, some ionized metals
Hydrogen and ionized metals such as calcium and iron
Both metals and ionized metals, especially ionized calcium

Answer 1

At a temperature of approximately 9,940 K, Sirius, being a main sequence star, exhibits specific spectral features. At this temperature, we expect to see a strong presence of ionized metals, along with hydrogen absorption features. Therefore, the most appropriate choice from your options would be:

Hydrogen and ionized metals such as calcium and iron

This option reflects the characteristics of the spectrum of a star like Sirius which would include strong hydrogen lines and the presence of ionized metals.