Globular clusters contain no stars more massive than the Sun. Which of the following seems like the least reasonable implication of this observation? Group of answer choices   Globular clusters are very old.   Globular clusters are very young.   Only the low-mass stars are still "alive" in the clusters.   Many red giants can probably be found in globular clusters.   The very massive stars in the globular clusters have already burnt out.

Q: Rank these astronomical objects based on their mass, from smallest to largest. A) a main-sequence…

A: Order of ranking from Largest Mass to smallest mass is shown as below.1. A typical black hole…

Q: All stars start their lives with the same basic composition. What determines their differences? O…

A: Mass they formed with

Q: The figure below shows the spectra of two galaxies A and B.  Please can i get help  with this…

A: Dear student as per the QnA guidelines I will be answering the first 3 subparts of this problem…

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: 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: 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: If a globular cluster contains 1 million stars and is 25 pc in diameter, what is the average…

A: The diameter of the globular cluster is d= 25 pc. Number of stars contain by the open clusters n= 1…

Q: If you assume that a globular cluster 6 arc minutes in diameter is actually 18 pc In diameter, how…

A:

Q: If interstellar dust makes an RR Lyrae variable star look 5 magnitude fainter than the star should,…

A: Given the magnitude get fainter by 5. Therefore,

Q: Stars formed after the Big Bang had cooled down. From globular cluster dating and from stellar…

A: All of the matter and energy in the universe was once confined to a singularity with infinite…

Q: How is the turnoff point on the H-R diagram of a cluster related to the cluster’s age?

A: Given:- The turnoff point on the H-R diagram of a cluster related to the cluster’s age Explain:- How…

Q: If a globular cluster contains 2 million stars and is 28 pc in diameter, what is the average…

A: This problem can be solved by first calculating the average volume reserved for one star and then…

Q: Rank these astronomical objects based on their density, from smallest to largest.   A) the…

A: The given astronomical objects are a) the singularity of a black hole b) a main sequence star c) a…

Q: What is the most likely explanation for the dark area in the figure shown below? It is a region…

A: Interstellar extinction is a term used by astronomers to describe the reduction in the amount of…

Q: 8. If a galaxy has an apparent radial velocity of 2000 km/s and the Hubble constant is 72 km/s/Mpc,…

A: Using Hubble's law we can solve this

Q: What kinds of objects lie in the halo of a spiral galaxy?

A: Given :- Spiral galaxy and what kinds of objects lie in the halo of it.

Q: Gas clouds that form stars are pulled together by which of the following?

A: The correct option is A : Gravitational Fields

Q: If an open cluster contains 450 stars and is 21 pc in diameter, what is the average distance between…

A: Given Number of stars in an open cluster (n) = 450 Diameter of the cluster Dclu              = 21 pc…

Q: If a globular cluster contains 2 million stars and is 30 pc in diameter, what is the average…

A: A Globular cluster is a cluster of old stars, only a few years younger than the Universe itself…

Q: Catching a wave, a 77-kg surfer starts with a speed of 1.1 m/s, drops through a height of 1.70 m,…

A:

Q: The figure below shows the spectra of two galaxies A and B.

A: 1. According to the figure Galaxy A has a high relative flux density which shows it has a dense…

Q: MODULE: From the Universe to the AtomTOPIC: Origins of the Elements (II)QUESTION:Part a) Explain why…

A: Part A:In a star cluster every star is expected to be formed from the same cloud of interstellar gas…

Q: you assume that a globular cluster 4 arc minutes in diameter is actually 27 pc in diameter, how far…

A:

Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…

A: Population 1 stars are the newer and younger stars.

Q: Based on what you know about main-sequence stars, select all of the correct statements from the…

A: Required : Correct statements .

Q: Hotter, more massive stars are virtually absent from globular clusters. What does this tell us?…

A: Globular clusters are clusters of stars, that are nearly symmetrical and round shaped clusters.…

Q: Based on what you know about the interactions between stars and other interstellar media, select all…

A: Interstellar space and formation of stars Interstellar space is the space between stars. This space…

Q: In which component of the interstellar medium do new stars form? O molecular clouds O HII Intercloud…

A: Interstellar medium is the medium between matter and radiation. The matter are gases (gas cloud),…

Q: Why are interstellar lines so narrow?

A: Spectral lines are formed due to electrons making transitions between the energy levels inside the…

Q: Based on what you learned about stellar evolution, select all of the correct statements from the…

A: 1. Correct: From the studies, it has been found that the period of some Cepheid variables actually…

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: Which of the following is not correct regarding Cepheid variable stars.     They can be measure out…

A: Cepheid variables are not main sequence stars. Rather, they are stars that are in the helium burning…

Q: Globular clusters revolve around the Galaxy in highly elliptical orbits. Where would you expect the…

A: A globular cluster is densely packed group of stars bound together by gravity. These clusters are…

Q: Give ALL correct answers referring to the properties of known stars, i.e., B, AC, BCD...…

A: Required : Correct answers:

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.