Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Question
Chapter 13, Problem 1TY
To determine
The distance to the star.
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In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm. If the line appears in a star's spectrum at 486.7 nm, what is the star's radial velocity (in km/s)? (Enter the magnitude.)
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Chapter 13 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 13 - Prob. 1QFRCh. 13 - Prob. 2QFRCh. 13 - Prob. 3QFRCh. 13 - Prob. 4QFRCh. 13 - Prob. 5QFRCh. 13 - Prob. 6QFRCh. 13 - Prob. 7QFRCh. 13 - Prob. 8QFRCh. 13 - Prob. 9QFRCh. 13 - Prob. 10QFR
Ch. 13 - Prob. 11QFRCh. 13 - Prob. 12QFRCh. 13 - Prob. 13QFRCh. 13 - Prob. 14QFRCh. 13 - Prob. 15QFRCh. 13 - Prob. 16QFRCh. 13 - Prob. 17QFRCh. 13 - Prob. 18QFRCh. 13 - Prob. 19QFRCh. 13 - Prob. 20QFRCh. 13 - Prob. 1TQCh. 13 - Would it be easier to measure a star's parallax...Ch. 13 - Prob. 3TQCh. 13 - Prob. 4TQCh. 13 - Prob. 5TQCh. 13 - Prob. 6TQCh. 13 - Prob. 7TQCh. 13 - Prob. 8TQCh. 13 - Prob. 9TQCh. 13 - Prob. 10TQCh. 13 - Prob. 1PCh. 13 - Prob. 2PCh. 13 - Prob. 3PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - Prob. 7PCh. 13 - Prob. 8PCh. 13 - Prob. 9PCh. 13 - Prob. 10PCh. 13 - Prob. 11PCh. 13 - Prob. 12PCh. 13 - Prob. 13PCh. 13 - Prob. 14PCh. 13 - Prob. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 13 - Prob. 1TYCh. 13 - Prob. 2TYCh. 13 - Prob. 3TYCh. 13 - Prob. 4TYCh. 13 - Prob. 5TYCh. 13 - Prob. 6TYCh. 13 - Prob. 7TYCh. 13 - Prob. 8TYCh. 13 - Prob. 9TY
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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 are the luminosity class and spectral type of a star with an effective temperature of 5000 K and a luminosity of 100 LSun?arrow_forwardAn astronomer is investigating a faint star that has recently been discovered in very sensitive surveys of the sky. The star has a magnitude of 16. How much less bright is it than Antares, a star with magnitude roughly equal to 1?arrow_forward
- A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the distance to this star? [Answer in parsecs] 37 What is the absolute magnitude of this star? 1.8 Is this star more or less luminous than the Sun? Answer "M" for More luminous or "L" for Less luminous. (HINT: the absolute magnitude of the Sun is 4.8) M What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.)arrow_forwardWhich star is more luminous? (you only have one try for this problem) A) A star with absolute magnitude 12 B) A star with absolute magnitude -2 How many times more luminous is it?arrow_forwardThe red supergiant star in Orion is called Betelgeuse, and its distance is 130 pc. What is the parallax of this star?arrow_forward
- The luminosity of a star is 6.6 x 1031 W and the peak wavelength in its spectrum is 4.6 x 10-7 m. Calculate the surface area of that star. Round off the answer to 2 decimal places with scientific representation.arrow_forwardWhich star is brighter as seen from the Earth? (you only have one try for this problem) A) A star with apparent magnitude 5 B) A star with apparent magnitude 12 How many times brighter is it?arrow_forwardAbsolute visual magnitude is a. the apparent magnitude of a star observed from Earth. b. the luminosity of a star observed from a distance of 1,000 pc. c. the apparent magnitude of a star observed from a distance of 10 pc. d. the luminosity of a star observed from Earth. e. c and d.arrow_forward
- The parallax of star Canopus is 0.033 and its apparent visual magnitude is -0.72. What is its absolute visual magnitude?arrow_forwardWhat is the luminosity of a star having four times the radius of the Sun and a surface temperature of 8,000 K?arrow_forward15: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the distance to this star? Answer: 37 16: What is the absolute magnitude of this star? Answer:1.8 17: Is this star more or less luminous than the Sun? Answer "M" for More luminous or "L" for Less luminous. (HINT: the absolute magnitude of the Sun is 4.8) Answer: M 18: What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.) Please answer question #18, #15-17 are correct, the photos provide the work for them.arrow_forward
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