Q / which type of spectral line broadening is less important compared to other type
Q: A spectrograph can be used to: O determine the chemical compositions of stars O break light from an…
A: Spectrograph can be used to break line from an object into colours
Q: Do gaps emerge between photons when a star's light stretches out and weakens?
A: Do gaps emerge between photons when a star's light stretches out and weakens?
Q: object. Apparent magnitude is how Y8ur eye. Generally, the brighter the object, the closed it is to…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: if a light source is not spherical, How does this affect calculations of luminosity? Do you expect…
A: Lumisosity is independent of an observer's distance from an object.It is an absolute measure of…
Q: Russell Diagram Blue or blue-white Red orange Red Superglants Main Sequence Glants Hipho Centour B…
A: Stars are the object which doesn't take any energy to enlighten itself or in simple words stars are…
Q: Which two spectral types were added to the spectral sequence after 1998? a. O and B b. K and M…
A: We define "Spectra of a star" as the elements absorbed by them. So based on the spectral…
Q: As seen from Earth, a star has a transverse velocity of 96 km/s and a radial velocity of 64 km/s.…
A: The space velocity (V) of the star with respect to Earth is given by: V = √(V_r^2 + V_t^2) where…
Q: skew ray.
A: A skew ray is a non-diffuse ray in a plane that contains a point of objects and an optical axis.…
Q: . How does the H-R digram of a given star cluster change as the cluster ages?
A: HR Diagram : Note : Blue color indicates the hottest stars and red color represent the…
Q: If the Sun's distance were three times its current distance, the "surface brightness" (apparent…
A: Distance is increased by 3 times That means r= 3R R is the initial distance
Q: B. Star has a magnitudes in visible and blue filters 2.5, 4 consequently, What is the flux ratio for…
A: Given: The magnitudes of the two filters are 2.5 and 4. Introduction: Measuring the brightness of…
Q: (d) You now know the sum of the two masses, and their ratio as well: two equations for two…
A: Given,
Q: Why does hydrogen, which is abundant in the sun's atmosphere, have relatively weak spectral lines,…
A: Atmos has electrons in different energy levels. Spectral lines are formed when electrons make…
Q: Which two spectral types were added to the spectral sequence after 1998? a. O and B b. Kand M c.…
A: Required : Which spectral types were added after 1998
Q: 2) A very rough estimate for a star is given by the density profile: p1) = P. (1-) where p, is the…
A:
Q: What is the difference between the peak wavelength of the stellar spectrum and the peak wavelength…
A: The study of Planck curves and star spectra is vital to solving cosmic mysteries in the large field…
Q: Answer in 3-5 sentences. 1. Relate the frequency of peak spectral power density of stars to their…
A: One is the temperature,and the other are the cosmoogical redshift and the doppler effect. When the…
Q: 4) Why infrared is preferred to observe the stars around Sgr A*?
A: There are molecules of gas and dust in interstellar space. They are sent out when a star dies.…
Q: A particular star has a surface temperature of 30,000K. Determine Amax, the wavelength at the peak…
A: Given: The surface temperature of the particular star is, T = 30,000 K To Find : The maximum…
Q: Dmensions of amgular momenlum faot in short Plss answe Lovely ®
A: To find- Dimension of angular momentum=? Given- L=Iω Here, L=angular momentum I=Moment of inertia…
Q: If the atmosphere were twice as thick as it currently is (extending farther into space), what effect…
A: If the atmosphere were twice as thick as it currently is ( extending farther into space ) , the sky…
Q: A distant galaxy has an apparent magnitude of 13 and is 5,000 kpc away. What is its absolute…
A: Apparent Magnitude The apparent magnitude of a star or a galaxy is the measure of how bright the…
Q: Besides using the peak wavelength emitted in its blackbody curve, how can a star’s spectrum tell you…
A: Introduction: A blackbody is a theoretical or model body that absorbs all radiation falling on it,…
Q: A dust cloud with constant opacity,
A: Given: x'=1 pc
Q: The distance to the Pleiades is 136.2 pc. The absolute V magnitude (M,) of Sirius is -0.57. What…
A: Given information: It has been assumed that Sirius is situated at Pleiades, which is at a distance…
Q: subject: astronomy) 1. When do you say a star is very hot compared to the red. 2. are stars of equal…
A: Answer (1) A blue star will always be hotter than the red star. It is independent of the relative…
Q: 2.9) Explain how astronomers might use spectroscopy to determine the composition and temperature of…
A: Atoms consist of discrete energy states called quantum states. When a transition takes place from…
Q: A bright red star is moving towards Earth. Which of the choices best completes the following…
A: Answer : - option D is correct. Explanation It is absorption because it is continuous spectrum,…
Q: In the graph below, the yellow region shows the AM 1.5 solar spectrum. The area indicated by the…
A: (a) Given: When λ=250 nm and 1000 nm, Pλ=1×109 Wm-2m-1. When λ=1000 nm and 2000 nm, Pλ=0.25×109…
Q: At rest hydrogen has a spectral line at 143 nm if this line is observed at 138nm for the star Sirius…
A: Simple problem from special theory of relativity and specifically it's a problem of Doppler's…
Q: Describe the principle of hydrostatic equilibrium as it relates to the internal structure of a star.
A: Stars are formed due to the gravitational collapse of interstellar gas and fusion reaction. The…
Q: Why are Balmer lines strong in the spectra of medium-temperature stars and weak in the spectra of…
A: Spectral lines are formed when electrons inside an atom make a transition between energy levels.…
Q: Using Wien's Law for two black body objects with a temperature of 1000 K (fire) and 290 K…
A:
Q: 1. Spectral signatures can be described using luminosity values in different spectral regions. UV…
A: Yes, it is possible to separate the different categories based on the values in given table because…
Q: CAN YOU LABEL THE RAY DIAGRAM
A:
Q: -What is the reason for laser beam divergence?
A: There are many reasons of divergence of a laser beam :- (1) Heisenberg uncertainty principle :-…
Q: Barnard's Star is the 2nd closest star to Sol (~ 6 light years). It is moving toward the Earth with…
A:
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