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MCQAdvancedExoplanets & Stellar Systems
USAAAO — 2022 First Round
Question 9
Estimate the mass of a globular cluster with a radial velocity dispersion σ_r = 16.2 km/s. The cluster has an angular diameter of θ = 3.56′ and is a distance d = 9630 pc away from us.
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Source
USAAAO 2022 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.