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A 0.7 Må star on the horizontal branch has a radius of 10 R. and a surface temperature of 4500 K. The He-burning core is 10% of the mass of the star. Given that the Heª nucleus has a mass of 4.00260324 atomic mass units (a.m.u.) and the C¹² nucleus has a mass of 12.00000000 a.m.u. estimate the maximum length of time the star could conceivably spend on the horizontal branch.

A 0.7 Må star on the horizontal branch has a radius of 10 R. and a surface temperature of 4500 K. The He-burning core is 10% of the mass of the star. Given that the Heª nucleus has a mass of 4.00260324 atomic mass units (a.m.u.) and the C¹² nucleus has a mass of 12.00000000 a.m.u. estimate the maximum length of time the star could conceivably spend on the horizontal branch.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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A 0.7 M star on the horizontal branch has a radius of 10 R. and a surface temperature of 4500 K. The He-burning core is 10% of the mass of the star. Given that the Heª nucleus has a mass of 4.00260324 atomic mass units (a.m.u.) and the C¹² nucleus has a mass of 12.00000000 a.m.u. estimate the maximum length of time the star could conceivably spend on the horizontal branch.
Transcribed Image Text:A 0.7 M star on the horizontal branch has a radius of 10 R. and a surface temperature of 4500 K. The He-burning core is 10% of the mass of the star. Given that the Heª nucleus has a mass of 4.00260324 atomic mass units (a.m.u.) and the C¹² nucleus has a mass of 12.00000000 a.m.u. estimate the maximum length of time the star could conceivably spend on the horizontal branch.
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