Doppler-Shift Observations of a Spectroscopic Binary Star Can Enable Astronomers

question 77

Multiple Choice

Doppler-shift observations of a spectroscopic binary star can enable astronomers to calculate ____ of its individual stars.

• A) the masses
• B) the sizes
• C) both a and b
• D) neither a nor b

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Definitions:

Canada

Canada is a country in North America, known for its vast landscapes, multicultural cities, and as a member of the Commonwealth, with a parliamentary democracy and a constitutional monarchy.

Water

A transparent, tasteless, odorless, and nearly colorless chemical substance, essential for all known forms of life, and the most widely used solvent.

Subsidence

The gradual sinking or settling of land or structures, often due to natural processes like the compaction of soil or human activities such as groundwater withdrawal.

Groundwater

Water that exists beneath the Earth's surface in soil pore spaces and in the fractures of rock formations.