e la supernova?
Q: Life on Earth wouldn't be possible without supernovae. Why?
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: of a star occur
A: Possible stages of a star that occurs are as follows:
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: In binary star systems where a main-sequence star is transferring mass to a white dwarf star, which…
A: Required : The correct option
Q: The Hydra super cluster is at a distance of about 800 MParsec. What is the recessional velocity?
A:
Q: If the Sun were to magically, and instantly, become a black hole; what would happen to the Earth’s…
A: Supernova are basically explosion of star
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: A red giant loses a solar mass in 150,000 years via a superwind. After 0.9 million years, it has a…
A: Dear student, as per the Qn-+A guidelines I will answer the first question only. Please, ask the…
Q: What is the life expectancy (in years of a 19M main-sequence Star? What is the life expectancy (in…
A:
Q: Explain what happens during a supernova, what features it produces, and the process of…
A: Hwy dear have a look
Q: How does the extreme temperature sensitivity of the CNO cycle affect the structure of stars?
A: As a result of the extreme temperature dependence of CNO burning, those stars that are dominated by…
Q: Explain what makes the planetary nebula glow and what makes the supernova remnant glow. Which of…
A: Planetary nebulae and supernova remnants are both glowing celestial objects in space, but they are…
Q: Wher would a star be located in the main sequence relative to the sun if its mass is 10 times that…
A: The position of the sun is in the middle of the H-R diagram due to its moderate temperature,…
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: What would a dead star of 2.5 solar masses be?
A: In massive stars the density and temperature of the core gain as much amount of heat to fuse the…
Q: Calculate the approximate lifetime of a 60 solar mass O star (1 million solar luminosities, 50% of…
A: The Lifetime of a Star:- The lifetime of a star is defined by the equation: τs=τo×MMo-2.5…
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: 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: Why massive stars are short lived?
A: A massive star has a shorter life spanthan an average star because of fasterhydrogen fuel…
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: 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: 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: If a super nova has an absolute magnitude of -20 and a distance of 10 million parsecs calculate the…
A: Detailed solution is given below:
Q: What causes a star to move off the main sequence?
A:
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: There are 200000 AU radius clouds will form a star of 10 solar masses and the 150000 AU radius…
A:
Q: How long (in years) will a 0.06Msun main sequence star live? (The solar lifetime is 11 billion…
A:
Q: What critical event must occur in order for a protostar to be- come a star?
A: Stars are formed from interstellar clouds. When the mass becomes high enough the molecular cloud…
Q: why are Cepheid variable stars good distance indicators? What about supernovae?
A: Named after delta-Cephei, Cepheid Variables are the most important type of variable because it has…
Q: a)What type of supernova is most luminous in light? (b) What kind of star results in such an…
A: a) Supernova is an astronomical event take place when a white dwarf star exploded. When the white…
Q: How massive have to be a main-sequence star in order to survive for at least 15 billion years?
A: The objective of this question is to determine the mass of a main-sequence star that would allow it…
Q: Two Stars ef the Same 10°° kg mass orbit each. LOther at a Constant lds meters apart. whate is the…
A: F = GM M /d2F = 6.67 *10-11 * 1030 * 1030/(1013)2 F = 6.67 * 1023 N
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- How long can a 4-solar-mass star live?(Astronomy) Supernova Ejection Times. Observations show that the gas ejected from SN 1987A is moving at about 10,000 km⁄s. How long will it take to travel one astronomical unit in hours? (Note that 1 AU equals 1.5 × 108 km)A main sequence star of mass 25 M⊙has a luminosity of approximately 80,000 L⊙. a. At what rate DOES MASS VANISH as H is fused to He in the star’s core? Note: When we say “mass vanish '' what we really mean is “gets converted into energy and leaves the star as light”. Note: approximate answer: 3.55 E14 kg/s b. At what rate is H converted into He? To do this you need to take into account that for every kg of hydrogen burned, only 0.7% gets converted into energy while the rest turns into helium. Approximate answer = 5E16 kg/s c. Assuming that only the 10% of the star’s mass in the central regions will get hot enough for fusion, calculate the main sequence lifetime of the star. Put your answer in years, and compare it to the lifetime of the Sun. It should be much, much shorter. Approximate answer: 30 million years.
- How much energy would be released if a star with a mass of 25 Msun and a radius of 10 Rsun detonates as a supernova explosion in 1 second? (Hint: think about the definition of binding energy). Express your answer in terms of solar luminosities.Comment on the difference between a nova and supernova. [Note: There are two basic types of supernova.]Why does lower mass star live longer that a higher mass star
- Suppose that a neutron star has a radius of 13 km and a temperature of 7,000,000 K. How luminous is it?A supernova’s energy is often compared to the total energy output of the Sun over its lifetime. Using the Sun’s current luminosity, calculate the total solar energy output, assuming a 1010 year main-sequence lifetime. Using Einstein’s formula E=mc2 calculate the equivalent amount of mass, expressed in Earth masses. [Hint: The total energy output of the Sun over its lifetime is given by its current luminosity times the number of seconds in a year times its ten billion-year lifetime; ; mass of earth = 6×1024kg; c = 3×108m/s. Your answer should be 200-300 Earth masses.]In the star clusters shown, which one is younger and why?