The 305-m-diameter Arecibo radio telescope pictured in figure below detected radio waves with a 9-cm average wavelength.Hinta. What was the angle between two just-resolvable point sources for this telescope?Minimum resolvable angle wasurad.b. How close together could these point sources be at the 2.57 million light-year distance of theAndromeda Galaxy? (Note: Estimated radius of the Andromeda Galaxy is about 7 x 10¹7 km.)The point sources could be as close asresolvable distance.x1015 km for minimum

Approach to solving the question: Detailed explanation:Examples: Key references:

Answered: The 305-m-diameter Arecibo radio…

Stars and Galaxies (MindTap Course List)

10th Edition

ISBN:9781337399944

Author:Michael A. Seeds

Publisher:Michael A. Seeds

Chapter17: Active Galaxies And Supermassive Black Holes

Section: Chapter Questions

Problem 1LL

See similar textbooks

Similar questions

The Giant Magellan Telescope is a new telescope being built in Chile with a mirror 25 meters in diameter. Part 1: If you neglect the impact of Earth's atmosphere, what is the angular resolution limit (diffraction limit or resolving power) of this telescope in green light (500 nm)? Give your answer in arcseconds. Part 2: The current Magellan telescope has a mirror 6 meters in diameter. How much more light per second will the Giant Magellan capture compared to the current Magellan?
Can someone help with this?
You record the spectrum of a distant star using a telescope on the ground on Earth. Upon analysing the spectrum, you discover absorption lines spaced at intervals typical of oxygen atoms. Which of the following are possible interpretations of this evidence? Select all that apply. The width of the spectral lines gives the diameter of the star The star is likely orbited by habitable planets with breathable atmospheres. The height of the spectral lines above the star's general blackbody spectral curve tells us how much oxygen is in the star The atmosphere of Earth contains oxygen The red or blueshift of the set of lines can tell us the speed of the star's motion toward or away from us
1. If a star has a surface temperature of 3000 K but a luminosity 150 times greater than our Sun, what size is this star? Give your answer in units of the solar radius. 2. At what wavelengths do stars of surface temperates 20 000 K, 10 000 K, and 3000 K have their peak intensity? 3. If the Hα absorption line in the spectrum of a galaxy is observed at a wavelength of 6715 ˚A, at what speed is the galaxy moving away from us?
As we discussed, clouds are made of a great many small drops. Really - a great many. Imagine a liquid cloud that fills a volume of 1 km3. The clouds contains 100 drops per cubic centimeter; for the sake of argument assume that each is 10 microns (micrometers) in radius. A. How many drops does the cloud contain? Compare this to a big number - say, the number of stars in the galaxy. B. What mass of water does the cloud contain? Compare this to something big - elephants, trucks, that sort of thing. C. What fraction of the cloud volume is filled with condensed water? One way to approach this is to compare the density of the suspended liquid water to the density of the surrounding air. D. How many 1 mm drizzle drops could you make from all the cloud drops? E. How much energy was released when this water condensed from vapor to liquid? If the water condensed in 20 minutes (a reasonable lifetime for a small cloud), what was the (energy per time)? power
5. A star whose temperature is 8000 K has a peak wavelength of 362.5 nm, according to Wien's Law. If the star is in the Andromeda Galaxy, which is moving towards us at about 402,000 km/hour, what would an observer on Earth see as the peak wavelength for this star (show your work, and use c = 300,000 km/s)?
The James Webb Space Telescope has a primary mirror of diameter ? = 6.5metres. When observing at 1100nm wavelength, calculate the minimum angular separation between two stars which can just be resolved; give your answer in arcseconds (arcsec), where 1 arcsec = 1/3600 degree, to 3 decimal places.
Quasars, an abbreviation for quasi-stellar radio sources, are distant objects that look like stars through a telescope but that emit far more electromagnetic radiation than an entire normal galaxy of stars. An example is the bright object below and to the left of center in Fig; the other elongated objects in this image are normal galaxies. The leading model for the structure of a quasar is a galaxy with a supermassive black hole at its center. In this model, the radiation is emitted by interstellar gas and dust within the galaxy as this material falls toward the black hole. The radiation is thought to emanate from a region just a few light-years in diameter. (The diffuse glow surrounding the bright quasar shown in Fig. is thought to be this quasar’s host galaxy.) To investigate this model of quasars and to study other exotic astronomical objects, the Russian Space Agency has placed a radio telescope in a large orbit around the earth. When this telescope is 77,000 km from earth and the…
How to calculate.
What is the ratio of the light-gathering power of a 10-meter telescope to that of a 1‑meter telescope? a. 10 to 1 b. 1 to 10 c. 100 to 1 d. 1 to 100 e. 3.2 to 1
The Kormendy relation for ellipticals can be written as He = 20.2+ 3.0 log R. where R. is the half-light radius (in kpc) and 4e is the surface brightness (in magnitudes per square arc second) at R.. An elliptical galaxy obeying this relation will have a total luminosity Lo R for some index 7. What is the correct value of n? O a. n=-6/5 O b. n= 4/5 T23D Oc n= 16/5 O d. n cannot be determined with the information we have.
5) The second image on the next page shows a UV image of a nearby galaxy (left) and an optical image of the same galaxy (right). Not counting the central core of the galaxy, where do the hottest stars tend to live? Again discounting the central core, is there a pattern to where the cooler stars tend to live? Explain your reasoning for both responses

SEE MORE QUESTIONS

Recommended textbooks for you

Stars and Galaxies (MindTap Course List)

Physics

ISBN:

9781337399944

Author:

Michael A. Seeds

Publisher:

Cengage Learning

Astronomy

Physics

ISBN:

9781938168284

Author:

Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:

OpenStax

Horizons: Exploring the Universe (MindTap Course …

Physics

ISBN:

9781305960961

Author:

Michael A. Seeds, Dana Backman

Publisher:

Cengage Learning

Stars and Galaxies (MindTap Course List)

Physics

ISBN:

9781337399944

Author:

Michael A. Seeds

Publisher:

Cengage Learning

Astronomy

Physics

ISBN:

9781938168284

Author:

Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:

OpenStax

Horizons: Exploring the Universe (MindTap Course …

Physics

ISBN:

9781305960961

Author:

Michael A. Seeds, Dana Backman

Publisher:

Cengage Learning

Foundations of Astronomy (MindTap Course List)

Physics

ISBN:

9781337399920

Author:

Michael A. Seeds, Dana Backman

Publisher:

Cengage Learning

The Solar System

Physics

ISBN:

9781337672252

Author:

The Solar System

Publisher:

Cengage

Stars and Galaxies

Physics

ISBN:

9781305120785

Author:

Michael A. Seeds, Dana Backman

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS