In the H-R diagram, a white dwarf is located at Select one or more: O a. the upper right corner of the diagram. Ob. the lower left corner of the diagram. Oc. the middle of the diagram.

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: Why don’t all supernova remnants contain pulsars?   a. All supernova remnants do contain pulsars.…

A: As we know that pulsar are fast spinning neutron stars. When there is a explosion in a star at the…

Q: Which of the following is most likely to occur when mass is continually added to a 1.5 solar mass…

A:

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

A:

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: As a white dwarf cools, its radius will not change because   a. pressure resulting from nuclear…

A: White dwarf is one of forms of a star in its life span. Whenever a star exhaust of its fuel, it…

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: If a stellar remnant is in between 0.4 and 1.4 solar masses, the resulting object will be a   a.…

A: If a stellar remnant is in between 0.4 and 1.4 solar masses, the resulting object will be a white…

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: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…

A: Required :  Spectral type, absolute magnitude, temperature and luminosity of star E.

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: Pulsars CANNOT be spinning white dwarfs because   a. white dwarfs are not that common.   b. white…

A: Correct Option is   " d "

Q: Which star in the table below has the greatest diameter?     Star Name d (parsecs) Parallax…

A: d. 58 Ori

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: Astronomers think of pulsars not as pulsing objects, but rather like a(n)   a. Cepheid variable.…

A: A Cepheid variable is a class of stars, that varies in its apparent magnitude values over a period…

Q: Which of the following is least reasonable regarding the mass of stars? Group of answer choices…

A: Stars are of different sizes and they have their own set of characteristics based on multiple…

Q: Suppose you observe a tight eclipsing binary with orbital period of 3 days, and radial velocity…

A: 1. Suppose you observe a tight eclipsing binary with orbital period of 3 days, and radial velocity…

Q: Which star in the table below has the least surface temperature?   Star Name d (parsecs) Parallax…

A: Since, distance of the star in terms of Parallax is, d=1parallax (in arc-sec)parsecs Now from…

Q: Fill in blank missing word A Blank variable is type of bright giant that is in the instability strip…

A: This problem can be solved by knowing some properties of Cepheid variable stars.

Q: Of the following types of stars, the one that has never been and can never be a giant star is a   a.…

A: a. Red dwarf stars

Q: An explosive, although nondestructive, event on the surface of a white dwarf that is part of a…

A: d. nova

Q: A star with an original mass of 9MSun undergoes an active period where it experiences mass loss via…

A: Given data: Mass of the star, Mstar=9Msun Time, t=1.1 million years = 1.1×106 years New mass,…

Q: Objects in binary systems consist of a neutron star accumulating material from another star on its…

A: Answer:b) X-ray bursters.  X-ray bursters are basically are one class of X-ray binary stars…

Q: 2GM What is the escape velocity (in km/s) from the surface of a 1.1 Mo neutron star? From a 3.0 M.…

A: Escape velocity is the speed  that is sufficient for a body to escape from a gravitational center of…

Q: Draw an H-R diagram and dot the following question options on the diagram (using the letters given…

A:

Q: The star Firefly is located 3.0 pc away. If it had an absolute magnitude of 13.0, which value below…

A: Write the given data. d=3AbsM=13

Q: The horizontal branch stars are giants fusing what element in their cores and then their shells?…

A: The horizontal branch is a stellar evolution stage after the red-giant branch.

Q: The density of a ________________ is greater than the density of a _________________.   a. white…

A: A white dwarf is a stellar remnant of a star, which is formed after the star depletes the hydrogen…

Q: The place on the H–R diagram where contracting protostars first become visible is   a. the…

A: The place on the H–R diagram where contracting protostars  first become visible is the birth line.

Q: When a mass is transferred through the inner Lagrangian point in a binary system toward a white…

A: Option A is correct answer

Q: Which of the following is least reasonable regarding stars on a Hertzsprung-Russell diagram?…

A: The Hertzsprung-Russell (H-R) diagram is a scatter plot of stars showing the relationship between…

Q: You discover a binary star system in which one member is a 15 solar-mass main-sequence star and the…

A: Required : The correct option.

Q: How high or low a star is on the main sequence is dictated primarily by ... Select one: A. its…

A: Answer:   A high or low a star is on the main sequence is dictated primarily is discussed below:

Q: The place on the H–R diagram where stars settle into the longest, most stable portion of their…

A: The place on the H–R diagram where stars settle into the longest, most stable portion of their…

Q: Indicate whether the following statements are true or false.   (Select T-True, F-False. If the…

A: Indicate whether the following statements are true or false A) White dwarfs are small dense objects…

Q: Match the spectral type and luminosity class to the letters shown on the Hertzsprung-Russell diagram…

A: Luminosity is directly proportional to the size of the star. On the basis of temperature and their…

Q: Choose the statements that correctly describe the characteristics of the stars located in the…

A: Option-E is the correct option.

Q: What keeps a neutron star from collapsing? a. the thermal pressure resulting from nuclear fusion in…

A: What keeps a neutron star from collapsing?Choose the correct option.

Q: Stars are born in   a. reflection nebulae.   b. dense molecular clouds.   c. HII regions.   d.…

A: Option (B): Dense molecular cloud.

Q: A group of 10 to 100 stars that formed at the same time but are so widely scattered in space their…

A: Before answering, We will discuss each of the given options.   1) Globular cluster - Globular…

Q: Indicate whether the following statements are true or false (Select T-True, F-False. If the first is…

A:

Q: O stars

A: In the H-R diagram we see that stellar masses decrease downward along the main sequence. At the…

Q: A Type Ia supernova is observed and achieves an apparent magnitude of m = 19.89 at peak brightness.…

A: Given Values :The absolute magnitudes of Type Ia supernovae at peak brightness,    M = -19 Apparent…

Q: The orbit of the binary pulsar PSR 1936+16, studied by Taylor and Hulse,   a. is so small that the…

A: Pulsars are a kind of highly magnetized compact neutron rotating very dense stars having a short…

Q: The white dwarf that remains when our Sun dies will be mostly made of A. helium. B. carbon. C.…

A: Step1: Overview   The white dwarf that remains when the sun dies will be mostly made of carbon .