The Local Bubble is:

Q: Of the following objects, the one that produces the least energy is a   a. supernova.   b. Type 1…

A: Answer:- Option (a) correct. Supernova.

Q: The lower mass a star, the (shorter, longer, lighter, heavier) it lives. The higher mass a star, the…

A: Solution: The star which is having a higher mass has more hydrogen as fuel. The lifespan of the star…

Q: a. In which cluster(s) would you not expect to find a white dwarf? List all that apply. b. You…

A: for the white dwarf : If the star has a mass less than 1.44 of the sun's mass, it becomes a white…

Q: 1. The stellar parameter that best determines a star's location on the main sequence is: Select one:…

A: 1. The stellar parameter that best determines a star's location on the main sequence is: c. mass…

Q: Which of the following is least reasonable regarding novae and supernovae? Group of answer choices…

A:

Q: Astronomers studying regions like the Orion Giant Molecular Cloud have observed that a wave of star…

A: Our Galaxy is pervaded by a diffuse mixture of gas and dust that occasionally becomes denser,…

Q: The traditional theory of the formation of our galaxy CANNOT explain   a. the existence of the disk…

A: a. The existence of the disk of the galaxy

Q: Determine the mean molecular mass of a star for both the scenario of being completely neutral and…

A:

Q: What is a neutron star? Group of answer choices A neutral star A compact star composed mainly of…

A: The problem is based on the concept of the neutron star.  It is a  celestial object of a very small…

Q: Two stars are in a closely orbiting binary system. The smaller star (a K-type main sequence star)…

A: The correct option. Following the mass transfer, which of the following is now true of the main…

Q: 3) indicate which locations in the H-R diagram correspond to places where the evolution is slow.…

A: Using the H-R diagram shown the places where the evoultion has been slow is identified.

Q: require(s) that a young hot star (T ≥ 25,000 K) be relatively nearby.

A: Correct answer is Emission nebula

Q: Which of the following statements about Supernova 1987A is FALSE? a. it exploded relatively close…

A: Supernova is a cosmological event. When a star reaches to its end time of it's life, then it gets…

Q: Use t = to compute the life expectancy of a 0.9-solar-mass star. (A solar lifetime is approximately…

A:

Q: Cepheid-stars, which are examples of “Standard Candles", are useful to astronomers as indicators of…

A: Solution: Cepheid variable stars and Type Ia supernovae are the most valuable standard candles.…

Q: The period–luminosity relation is useful in determining   a. the mass of a star for which the…

A: Period-luminosity relation :-                                                   According to this…

Q: The Messier Catalog is a. a listing of all the stars within the Local Bubble b. a list of all the…

A: The Messier catalog is a list of 110 commonly found objects in the night sky that can be easily…

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: Synchrotron emission by electrons of y = 2 x 107 in a supernova remnant peaks in the ultraviolet at…

A: A charged particle moving inside a magnetic field tends to release energy. When the velocity of…

Q: An M dwarf star of mass 0.1 solar masses, a radius of 0.13 solar radii and a photospheric…

A: Mass of M dwarf star, m = 0.1x solar mass M Radius of M dwarf star, r= 0.13 solar radii R  The…

Q: A supernova occurs 140,000 light years from Earth, where a neutron star of mass 1.6 solar masses and…

A:

Q: Q7// a- Estimate the density of a white dwarf if it has a solar mass packed into a sphere with…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: What kind of star is most likely to become a white-dwarf supernova? A. a star like our Sun B. a…

A: There are gas and dust particles in outer space when their mass increases they will start attracting…

Q: The chemical abundance of population I stars   a. indicates that they were formed before the…

A: Population I star consist of sun and tend to be hot, young, luminous and focused in the spiral…

Q: 1. In this question, you may assume that the core temperature in the Sun is T=15x10$K. L Bolatively…

A:

Q: We know that dark matter must exist in galaxies. If not, many of the stars in a galaxy would ...…

A: Dark Matter is an unknown matter which is not visible. The reason behind its invisibility is, it…

Q: What are typical orbital periods for X-ray binaries? Oa Days for high-mass binaries and woeks for…

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: The average density of the sun is 1. 4 g/cm3 What do you expect the density to be at 0.25 of Rsun?…

A: Given: The average density of the sun is ρs = 1.4 g/cm3 The radius of the sun is R = 6.9634 x 105 km…

Q: Consider a gas of pure ionized hydrogen. Calculate the central pressure of a Sun- like star which is…

A: Given, Temperature T = 2 × 108 K              Mass density D = 2 × 105 kg/m3             Pressure P…

Q: Globular clusters contain no stars more massive than the Sun. Which of the following seems like the…

A: First, we are aware that no stars more massive than the Sun can be found in globular clusters. Any…

Q: A planetary nebula is visible due to ____.

A: The nebula is the bright area in the sky, which can be cloud of stars or gas.

Q: Once carbon builds up in the Sun's core, astronomers expect our Sun to first become a red giant,…

A: Our sun is an average mass star in the main sequence. The life cycle of average main sequence star…

Q: What are the two main nuclear chains known in stars and what are they responsible for? What are the…

A: To explain the above question is given as, There are two main reactions in the nuclear chain in…

Q: A neutron star is the remnant left after certain supernovae texplosions of giant stars) Typically,…

A: The density is given by  ρ=Massvolume The volume of sphere is 43πR3 It is given that the mass of…

Q: What is the peak wavelength (in nm) of a neutron star's luminosity if its temperature is 106 K?

A: As we know that Using weins displacement law,λmax T = b -----(1).where b is a constant. known as…

Q: Iron is unique among the elements in terms of its nuclear properties, and this gives it a decisive…

A: Explanation: Iron is not the heaviest element that stars can produce, just the heaviest one that can…

Q: C and D

A: The luminosity of sun is known. This is the energy released per second. We then find the number of…

Q: The luminosity class of a star tells an astronomer: O how long ago the star formed O whether the…

A:

Q: . Imagine a giant sphere with a radius of 1 AU surrounding the Sun. What is the surface area of this…

A: "Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Problem 7. Assume that a star can be approximated as a black body, using Stefan's Boltzmann Law 1.…

A: Solution: 1. The luminosity of a star is the power emitted or power output of the star. And the…

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: C and D

A: We are given  the luminosity of sun. This is the energy released per second by sun. We know that 4…

Q: Star size in term of the sun. Wien’s Law: max = 2.98 X 106 / T The value of T is in Kelvin.…

A: The  stellar radius of the sun is, Rs=kLθTs2   The expression for the stellar radius of the given…

Q: The peculiar system SS 433   I. is emitting beams of energy and matter.   II. is producing a…

A: We know that, The peculiar system SS 433 is emitting beams of energy and matter & producing a…

Q: Assume that the laws of Newtonian mechanics and Newtonian gravity still hold for a neutron star,…

A: Assume that the laws of Newtonian mechanics and Newtonian gravity still hold for a neutron star,…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.