Calculate the average density of a red giant core of mass 0.25 solar masses and radius 15,000 km
Q: Why does a type Ia supernova explode? in two sentences.
A:
Q: Supernova A is farther away than supernova B. The brightness of supernova A will be ________ than…
A: The brightness of supernova and its distance from the observer are related as
Q: Which of the following is least reasonable regarding novae and supernovae? Group of answer choices…
A:
Q: A supernova remnant is now 3.65 pc in radius and is expanding at 4,850 km/s. Approximately how many…
A: Given, Radius of remnant of supernova = 3.65 pc = 1.116×1014km Rate of expanding = 4850 km/s
Q: As we have discussed, Sirius B in the Sirius binary system is a white dwarf with MB ∼ 1M , LB ∼…
A: Given that: The mass of Sirius B: MB ~ 1MThe luminosity of Sirius B: LB ~ 0.024LThe radius of Sirius…
Q: Which stars are associated with a planetary nebula? black holes, neutron star's, white dwarf or main…
A: Required : What are planetary nebula associated with.
Q: Describe the evolution of a very low mass start a red dwarf, birth to death
A: Answer Low mass stars in their dating stages shed their outer layers transfer most of their mass…
Q: where do hydrogen-buring stars spend most of their time on the H-R Diagram? Is it the main sequence,…
A: Hydrogen burning stars are those stars which burns hydrogen as their dominant fuel. Horizontal…
Q: fill in missing word a) One difference between a type I and type II supernova is the formation of…
A: Few sentences are given and we need to fill in the blanks.
Q: Calculate the luminosity of an 8 solar mass star.
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
Q: A 1.5 M neutron star and a 0.7 M white dwarf have been found orbiting each other with a period of 10…
A: The expression for the Kepler’s third law for binary stars is as follows: MA+MB=a3p2…
Q: A red giant loses a solar mass in 250,000 years via a superwind. After 0.8 million years, it has a…
A: The original mass f the red giant is 12.7 MSun.
Q: Observations show that stellar luminosity, L, and mass, M, are related by Lx M3.5 for main sequence…
A:
Q: 24 If the Temperature of the core of a supernova is 3200 x 1023 K, what should be the average…
A: Step 1:Step 2:
Q: a supernova remnant is now 2.95 pc in radius and is expanding at 3,850 km/s. approximately how many…
A: Given information: The radius of the supernova remnant (D) = 2.95 pc = 2.95 (3.1×1013 km) = 9.145…
Q: A neutron star has a radius of 11.5 km and a mass of about 1.35M Calculate the density of this…
A:
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: Consider two stars on the main sequence, A and B. Star A has a mass of Мо Star B has a mass of 0.2…
A: Solution attached in the photo
Q: Why do you expect neutron stars to have a more powerful magnetic field than a white dwarf?
A: A neutron star consists of ions along with neutrons which are responsible for radiation in the form…
Q: When two stars are in the same star system, they can affect each other’s evolution. Two stars in the…
A: Two stars in the same system might evolve at a different pace, depending on their distances in the…
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: White dwarfs have a temperature of 100×103 K. Calculate the maximum wavelength of a White dwarf.
A: A white dwarf is a stellar core remnant that is highly dense and made of electron-degenerate matter.…
Q: The present-day density of the sun is about 1.4 g/cm3. The volume of a sphere is 4/3πr3. The density…
A: Given:ρsun=1.4g/cm3ρstar=ρsunxRsunRstar3volume of sphere =4/3πr3to find:ρsun when Rsun=50 times…
Q: Suppose that a neutron star has a radius of 10 km and a temperature of 1,000,000 K. How luminous is…
A: The luminosity of a star is defined as the total amount of electromagnetic energy released by a star…
Q: Why don't red dwarfs become giant stars?
A: Red dwarf stars or M-type stars are small stars with a mass of 0.08 to 0.6 times the mass of the…
Q: What happens to a White Dwarf's radius if a little mass is added? What happens if a companion star…
A:
Q: A 1.8 M neutron and a 0.7 M white dwarf have been found orbiting each other with a period of 28…
A: Kepler’s third law for binary stars
Q: Star A and Star B are both on the main sequence. Star A is 63 times more luminous than Star B. What…
A:
Q: What is the difference between type I and type II supernovae
A: To determine Difference between type I and type II supernovae
Q: A supernova remnant is now 3.05 pc in radius and is expanding at 1,100 km/s. Approximately how many…
A: Given, The radius: r=3.05 pc=3.05×3.1 × 1013 km 1 pc =3.1 × 1013 kmor, r=9.455 ×…
Q: In a star of 1 solar mass (M☉), the core hydrogen burning phase, also known as the main sequence…
A: In the field of stellar evolution, there is a principle that the lifetime of a star on the main…
Q: QUESTION 16 Use the figure shown below to complete the following statement: A low-mass protostar…
A: During the formation of a low-mass protostar, a protostar accumulates mass by accreting material…
Q: Type 1a supernovae are not: The result of exceeding the Chandrasehkar limit. Produced…
A: Required :: Type 1a supernovae are not:
Q: The flux received at the Earth from Supernova 1885 was 3.0182 x 10 10 W/m?. The luminosity of the…
A: flux (I) = 3.0182×10-10 Wm2luminosity = 6×109 solar luminosities
Q: describing the various stages in the life of a 1.0 solar mass star, 0.5 solar mass star, and a 3.0…
A: In this question we have to describe the life of a 0.5, 1.0 and 3.0 solar mass stars.
Q: Sun-like star transitions into a Red Giant __________. Group of answer choices after the planetary…
A: Solution Given dataSun like star transitions into a Red Giant ..........Which option is correct…
Q: A supernova remnant is now 3.85 pc in radius and is expanding at 3,350 km/s. Approximately how many…
A:
Q: What is the life expectancy (in years) of a 10 M⊙ main-sequence star? What is the life expectancy…
A: Required : The life expectancy of stars.
Q: Betelgeuse is a nearby supergiant that will eventually explode into a supernova. Let's see how…
A:
Q: If a neutron star has a radius of 13 km and a temperature of 9.0 x 10° K, how luminous is it?…
A:
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Comment on the difference between a nova and supernova. [Note: There are two basic types of supernova.]How does a white dwarf differ from a neutron star? (Select all that apply.) A white dwarf is less massive than a neutron star. A neutron star is denser than a white dwarf .A neutron star is less massive than a white dwarf. A neutron star has a smaller radius than a white dwarf .A white dwarf is denser than a neutron star .A white dwarf has a smaller radius than a neutron star.If a contracting protostar is two times the radius of the Sun and has a temperature of only 1890 K, how luminous will it be relative to the Sun?
- Suppose that a neutron star has a radius of 13 km and a temperature of 7,000,000 K. How luminous is it?Why are Cepheid variables important? O Cepheids variables are pulsating stars whose pulsation periods are directly related to their true luminosities. Therefore they can be used as distance indicators. O Cepheids variables are supermassive stars that are on the verge of becoming supernovae. Therefore they allow us to choose candidates to watch if we hope to observe a supernova. O Cepheid variables are stars that vary in brightness because they harbor a black hole. Therefore, they provide direct evidence for black holes. O Cepheids variables are a type of irregular galaxy, much more common in the early universe. Therefore they help to understand how galaxies formed.Why are red dwarfs very dim.
- Consider two stars on the main sequence, A and B. Star A has a mass of 4 M⊙. Star B has a mass of 0.8 M⊙. By what factor is the luminosity of star A greater than the luminosity of star B?What are the main products of the fusion reactions that take place in low mass main sequence stars?What causes an aging giant star to produce a planetary nebula?
- Question 41 .Suppose you are looking at H-R diagrams of two similar star clusters. The most luminous main sequence stars in the Porcini cluster are much more luminous than the most luminous main sequence stars in the Morel cluster. What can you conclude? O the Porcini cluster is younger than the Morel cluster O the Porcini cluster is farther away than the Morel cluster O the Porcini cluster is lower in metallicity than the Morel cluster O the Porcini cluster is larger in diameter than the Morel clusterWhy does a type II supernova explode? in two sentences.A Type Ia Supernova is an example of a: