The stars in a binary system are a 4 MO main sequence star and a 1 MO red giant. Explain why this binary system makes sense if the two stars are close together but is inconsistent with what we know about stellar evolution if the stars are a wide pair.
Q: What are the different kinds of thermonuclear fusion in main-sequence stars and at what temperatures…
A: Hydrogen fusion takes place in the main-sequence stars. The star turns on and becomes a main…
Q: erstanding the Mass- Luminosity Relation How do we make sense of stellar lifetimes? Mo t(yr) 0.08 1…
A: The lifetime of a star is determined by its mass and its rate of energy production through nuclear…
Q: Describe how a star froms. What would happen to a star the size of our Sun once it runs out of…
A:
Q: A 46M Sun main sequence star loses 1 MSun of mass over 105 years. (Due to the nature of this…
A: Total mass is The main sequence star loses of mass over Find:(a) The solar mass lost in a year.(b)…
Q: of a star occur
A: Possible stages of a star that occurs are as follows:
Q: If an X-ray binary consists of a 17-solar-mass star and a neutron star orbiting each other every…
A: The expression for the Kepler’s third law is as follows: MA+MB=a3p2 1
Q: Put in order, from earliest to latest, the sequence of events that lead to a star becoming a red…
A: When a star runs out of hydrogen fuel, nuclear reactions can no longer happen and the star starts…
Q: This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume…
A:
Q: What is the life expectancy (in years of a 19M main-sequence Star? What is the life expectancy (in…
A:
Q: Suppose a protostar has a luminosity of 157,341 Lo and a surface temperature of 4,540 K (Kelvins).…
A: Given: Luminoscity of protostar, 157341 LS Surface temperature of protostar, 4540 K Surface…
Q: 1. In this question, you may assume that the core temperature in the Sun is T=15x10$K. L Bolatively…
A:
Q: (Astronomy) X-Ray Binary. If an X-ray binary consists of a 20-solar-mass star and a…
A: Solution: Given Values, Mass of the star A MA=20 solar mass Mass of the neutron star MS=2.25…
Q: True or False 8. Almost all stars are in binary systems. The book says: "So far you have been…
A: The statement: All stars are in binary systems. The book says: "So far you have been considering the…
Q: With a 14 solar mass star example. Describe how its position on an H-R diagram will change as it…
A: A star with 14 solar masses is categorized as a B1 type star. When a significant amount of the…
Q: Consider two different clusters with approximately the same turnoff luminosity. Cluster A has a main…
A: Given two clusters A and B on the H-R diagram (which is a plot between the luminosity and…
Q: a) What is a binary star system? (b) describe briefly two methods for showing that a system is a…
A: (a) A binary star system is a system of two stars orbiting each other around a common center. Binary…
Q: Estimate the luminosity of a 3-solar-mass main-sequence star; of a 9-solar-mass main-sequence star.…
A: The relationship between luminosity and mass of the main-sequence star is given by, L=M3.5 (1)…
Q: 1. The neutrino flux from SN 1987A was estimated to be 1.3 x 1014 m-2 at the location of Earth. If…
A:
Q: protostar • main-sequence • post-main-sequence
A: A Hertzsprung–Russell diagram (HR diagram) is a plot of stars' luminosity versus temperature, which…
Q: what is a star? define neclear fusion? how does nuclear fusion keep the star keep burning ?
A: Star : In basic we can say that star is a very large ball of bright glowing hot matter in space, and…
Q: Main sequence star A is 5 times as massive as main sequence star B. How do the main sequence…
A: Main sequence stars are those which fuse hydrogen atoms in their core to form helium. They have a…
Q: A 2MO core of a star contracts after using its nuclear fuels. Explain why we can be sure that the…
A: A white dwarf is the final cycle of stars like our Sun. By the end cycle of stars, they will…
Q: 3. a) Explain how it is possible for the core of a red giant to contract at the same time that its…
A: a) The core of a red giant contracts due to depleted fuel, while nuclear fusion in surrounding…
Q: What is the mass of a star with a main-sequence lifetime of 4 billion years? 17 X solar masses
A: According to stellar theories & observations the average lifetime of main-sequence stars has…
Q: A planet orbits 1 AU from a star that is 2 times as massive as our Sun. How does the star's…
A: Let, The luminosity of the star = L The luminosity of the Sun = LSun The mass of the star = M The…
Q: From its spectral type, the surface temperature of a main sequence star is measured to be about…
A: Using the 1r2 rule method, we can find out the star's distance by measuring the intrinsic brightness…
Q: calculate the main sequence lifetime of (a) a 4M☉ star, and (b) a 0.75M☉ star. Express the lifetimes…
A: The lifetime of the main sequence stars is given as: τMSτSun = MMsun-2.5 where, τsun = 1010 years
Q: Draw the evolution of a 1 Mo star on the H-R diagram from the zero age main se- quence to the white…
A: Step 1: Evolution of stars: Change in the properties of stars resulting in their passing through…
Q: The total luminosity of the Sun is 4e26 Watts. a) What is the mass (in kg) that the Sun loses each…
A:
Q: Explain in full detail how and why medium-mass stars like the Sun evolve off the main sequence. Be…
A: Answer is explained below with proper explanation
Q: A 1.4 M. neutron star and a 0.5 M. white dwarf have been found orbiting each other with a period of…
A: The given formula works only if we put quantities in the units given, solar mass, years and…
Q: Based on what you know about main-sequence stars, select all of the correct statements from the…
A: Required : Correct statements .
Q: 2. A solar-type star is seen with an apparent magnitude my = 30. Assuming that there is no…
A: As we know that,The distance modulus is a common technique of measuring distances in astronomy. It…
Q: Select all of the statements about the main sequence stage in the life of a star that are TRUE:…
A: The statements about the main sequence stage in the life of a star that are TRUE: All stars spend…
Q: 7. Let's characterize a typical neutron star. (a) Compute its luminosity in units of the solar…
A: The neutron star has a surface temperature of 106 K and a radius of 7 km One solar luminosity is…
Q: What are the on the axes of a Hertzsprung-Russell diagram? (b) Name one thing you can tell about a…
A: Hertzsprung-Russell Diagram plots the temperature of the start against their luminosity (or) colour…
Q: Describe the spectra for a spectroscopic binary for a system comprised of an F-type and L-type star.…
A: Given Describe the spectra for a spectroscopic binary for a system comprised of an F-type and L-type…
Q: What do these three nebulae have in common? NOTE: There are multiple correct answers. Select all…
A: (1) As we know that Nebulae are made of dust and gases mostly hydrogen and helium. (2) The dust and…
Q: Give ALL correct answers referring to the properties of known stars, i.e., B, AC, BCD...…
A: Required : Correct answers:
Q: 2.) Which of the following DOES NOT describe what happens when the nuclear fusion stopped in the…
A: Supernova is the sudden increase in brightness of a star due to explosion which may end the life of…
Q: Topic: Life cycle of stars Q. If a giant star is cooler than a main sequence star, why does it have…
A:
Q: A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES…
A: Given information: The mass of the star (m) = 25M⊙ The luminosity of the star (L) = 80000L⊙ part a):…
Q: The radius of the nebula is about 0.401 light-years. The gas is expanding away from the star at a…
A: Given that, r=0.401 light year1 light year=9.46×1015 mr=0.401×9.46×1015=3.79×1015 mThe particle at…
Q: Match each statement with the appropriate item (If the first corresponds to B and the next 4 to C,…
A: (1) When a main sequence star runs out of hydrogen fuel, nuclear fusion ceases and the star starts…
Q: Why are Cepheid variables important? O Cepheids variables are pulsating stars whose pulsation…
A: Cepheid stars: These kinds of stars have the property to compress and expand within a short time…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
