The Total Mass of the Pair of Stars in Spectroscopic

question 38

Multiple Choice

The total mass of the pair of stars in spectroscopic binaries are difficult to estimate because

• A)we can't measure the radial velocities of each star in the system.
• B)we can't see the shape or tilt of the orbit.
• C)we can't find the diameters of the stars.
• D)we can't determine the luminosities of the stars.
• E)the Doppler shift is not measurable.

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Definitions:

Depreciation

The process of allocating the cost of a tangible asset over its useful life, reflecting the decrease in value over time.

Useful Life

The estimated time period that an asset is expected to be usable for its intended purpose, affecting its depreciation or amortization schedules.

Discount Rate

In discounted cash flow analysis, this is the interest rate utilized to calculate the present value of cash flows expected in the future.

Net Present Value

A method used in capital budgeting to evaluate the profitability of an investment by calculating the difference between the present value of cash inflows and outflows over a period of time.