Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Question
Chapter 8, Problem 11P
To determine
Total mass of the visual binary system
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Suppose the Sun was part of a binary star system with a period of 15 years and an average separation from its companion star of 10 AU. What is the mass of the companion star?
A star is observed to have a parallax of 0.0015". What is the distance to the star in units of AU?
What is the lifetime of a 10-solar-mass star on the main sequence?
a.
3.2 × 107 years
b.
320 years
c.
3.2 × 1012 years
d.
1 × 109 years
e.
1 × 1011 years
Chapter 8 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 8 - Prob. 1RQCh. 8 - Why was the Hipparcos satellite able to make more...Ch. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - How Do We know? In what way does accumulation of...Ch. 8 - Prob. 1DQCh. 8 - Can you think of classification systems used to...Ch. 8 - Prob. 3DQCh. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 8PCh. 8 - Prob. 9PCh. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 1LTLCh. 8 - Prob. 2LTL
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- If two stars are in a binary system with a combined mass of 5.5 solar masses and an orbital period of 12 years, what is the average distance between the two stars?arrow_forwardWhat observations or types of telescopes would you use to distinguish a binary system that includes a main-sequence star and a white dwarf star from one containing a main-sequence star and a neutron star?arrow_forwardThe most recently discovered system close to Earth is a pair of brown dwarfs known as Luhman 16. It has a distance of 6.5 light-years. How many parsecs is this?arrow_forward
- If a visual binary system were to have two equal-mass stars, how would they be located relative to the center of the mass of the system? What would you observe as you watched these stars as they orbited the center of mass, assuming very circular orbits, and assuming the orbit was face on to your view?arrow_forwardWhat is the defining difference between a brown dwarf and a true star?arrow_forwardSketch an HR diagram. Label the axes. Show where cool super-giants, white dwarfs, the Sun, and main-sequence stars are found.arrow_forward
- What are the largest- and smallest-known values of the mass, luminosity, surface temperature, and diameter of stars (roughly)?arrow_forwardthe parallax angle of a star to be 0.002 arc-seconds. what would the distance be to this star?arrow_forwardIf the main-sequence mass lower limit is 0.08 solar mass and the brightest main-sequence stars are 1 million times more luminous than the Sun, what is the mass range along the main sequence in the figure below? (answer in solar masses)arrow_forward
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