![Modified Mastering Astronomy with Pearson eText -- Combo Access Card -- for Essential Cosmic Perspective-- 18 months](https://www.bartleby.com/isbn_cover_images/9780137343102/9780137343102_largeCoverImage.gif)
Modified Mastering Astronomy with Pearson eText -- Combo Access Card -- for Essential Cosmic Perspective-- 18 months
9th Edition
ISBN: 9780137343102
Author: Bennett, Jeffrey, Donahue, Megan, SCHNEIDER, Nicholas, Voit, Mark
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 12, Problem 49EAP
To determine
The way GAIA is able to measure small parallax angles and the way it affects knowledge of the universe.
Expert Solution & Answer
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Students have asked these similar questions
Q15. The space observatory Gaia was launched in 2013 as the successor to
Hipparcos and is returning data on its ambitious mission to catalog the 3-
dimensional position of more than 1 billion stars in the Milky Way. The
smallest parallax angle it can measure, for stars of at least magnitude 12, is
0.000008", What is the most distant star to which Gaia can measure parallax?
Q16. The center of our Galaxy is about 8,500 parsecs from Earth.
a. What would be the parallax angle of a star near the center of the
Galaxy?
b. Could this angle be measured by Hipparcos?
c. Could this angle be measured by Gaia?
Problem 2. Parallax and Distance (Palen, et. al., 2nd Edition, Chapter 10, problem 43)
Sirius, the brightest star in the sky has a parallax of 0.379 arcsec
What is its distance in parsecs?
in light-years?
1. A distant galaxy has an apparent magnitude of 10 and is 4,000 kpc away. What is its absolute magnitude? (Round your answer to at least one decimal place.)
The difference in absolute magnitude between two objects viewed from the same distance is related to their fluxes by the flux-magnitude relation.
FA/FB= 2.51(MB − MA)
2. How does the absolute magnitude of this galaxy compare to the Milky Way
(M = −21)?
Chapter 12 Solutions
Modified Mastering Astronomy with Pearson eText -- Combo Access Card -- for Essential Cosmic Perspective-- 18 months
Ch. 12 - Prob. 1VSCCh. 12 - Prob. 2VSCCh. 12 - Prob. 3VSCCh. 12 - Prob. 4VSCCh. 12 - Prob. 5VSCCh. 12 - Prob. 6VSCCh. 12 - Prob. 1EAPCh. 12 - Prob. 2EAPCh. 12 - Prob. 3EAPCh. 12 - Prob. 4EAP
Ch. 12 - Prob. 5EAPCh. 12 - Prob. 6EAPCh. 12 - Prob. 7EAPCh. 12 - Prob. 8EAPCh. 12 - Prob. 9EAPCh. 12 - Prob. 10EAPCh. 12 - Prob. 11EAPCh. 12 - Prob. 12EAPCh. 12 - Prob. 13EAPCh. 12 - Prob. 14EAPCh. 12 - Prob. 15EAPCh. 12 - Prob. 16EAPCh. 12 - Prob. 17EAPCh. 12 - Prob. 18EAPCh. 12 - Prob. 19EAPCh. 12 - Prob. 20EAPCh. 12 - Prob. 21EAPCh. 12 - Prob. 22EAPCh. 12 - Prob. 23EAPCh. 12 - Prob. 24EAPCh. 12 - Prob. 25EAPCh. 12 - Prob. 26EAPCh. 12 - Prob. 27EAPCh. 12 - Prob. 28EAPCh. 12 - Prob. 29EAPCh. 12 - Prob. 30EAPCh. 12 - Prob. 31EAPCh. 12 - Prob. 32EAPCh. 12 - Prob. 33EAPCh. 12 - Prob. 34EAPCh. 12 - Prob. 37EAPCh. 12 - Prob. 38EAPCh. 12 - Prob. 39EAPCh. 12 - Prob. 41EAPCh. 12 - Prob. 42EAPCh. 12 - Prob. 43EAPCh. 12 - Prob. 44EAPCh. 12 - Prob. 45EAPCh. 12 - Prob. 46EAPCh. 12 - Prob. 47EAPCh. 12 - Prob. 48EAPCh. 12 - Prob. 49EAPCh. 12 - Prob. 50EAPCh. 12 - Prob. 51EAPCh. 12 - Prob. 52EAPCh. 12 - Prob. 53EAPCh. 12 - Prob. 54EAP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Q8. Measured the parallax angle of the Sirius Yamaniya star, see Figure, and found 0.377 arcsec. Calculate the star's distance in the Astronomical parsec and in light year. Orion Sinus Canis Majorarrow_forward1.)How long do you have to wait for a star to undergo its maximum parallactic displacement? 2.) How can the observation of stellar parallaxes in general be used as evidence against a geocentric view of the cosmos?arrow_forwardStar A and Star B are a bound binary at a distance of 20 pc from the Earth. Their separation is 30 AU. Star A has a mass twice that of Star B. The orbital period of the binary is 100 years. Assume the stars orbit in circular orbits. a. What is the parallax of Star A, in units of arcsec? Assume parallax is measured from the Earth. For part a, ignore the presence of the binary companion. b. What is the angular separation we would observe between Star A and Star B, in units of arcsec? If we compare multiple images of this star system taken across different months and years, which source of motion will be the dominant effect? What is the total mass of the binary system (combined mass of Star A and Star B)? Provide your answer in both kg and solar masses. c. d. What is the distance from Star A to the center of mass of the binary system?arrow_forward
- Problem 5. Imagine that you observe a star field twice, with a six-month gap between your observations, and that you see the two sets of stars shown below. Which do you think is closest to the observer? Figure 1: Schematic of image of stars A,B, and P taken six months apart. Problem 6. Suppose the angular separation between stars A and B is 0.5 arcseconds. How far would you estimate star P to lie from the observer?arrow_forward1.) How far, in parsecs, is an object that has a parallax of 1 arc second? How far is it, in light years? 2.) How far in parsecs, is an object that has a parallax of 0.1 arc-seconds? How far is it, in light years?arrow_forward1. The relative velocities of four stars are shown in the figure below with arrows. If an astronomer were to study the light from these four stars, in which star would the astronomer see greatest redshift of its light spectra? Hint: Think Doppler Effect A. star 1B. star 2C. star 3D. star 4arrow_forward
- Using MBH = 6.6 × 10 Mo, calculate the below. a. Find radius of the Schwarzschild sphere (Schwarzschild radius Rs). You can calculated from the appropriate formula or just use the fact that for an object of 1 solar mass Rs = 3 km. b. Express Rs in km, in AU, in parsecs. c. Using the distance to M87 and your result above, find angular radius of the SMBH (Schwarzschild radius). Express it in arcseconds (") and micro- arcseconds (pas) d. Take the radius of Pluto's orbit equal to 40 AU and find its angular size (in micro-arcseconds, pas) at the distance of M87.arrow_forwardWhich of the following can explain how we can calculate distances to stars despite being able to travel to them? a. Examining stellar spectra b. Period-Luminosity Relations c. Interstellar probes d. Radar e. Triangulation (aka parallax)arrow_forwardExplain how parallax measurements can be used to determine distances to stars. Why can we not make accurate measurements of parallax beyond a certain distance?arrow_forward
- Astronomy Briefly explain what evidence we can use to learn about the lives of stars even though their lives are far longer than human lives. Why do HR diagrams look different for star clusters of different ages? How do we use the diagram to determine the age of the cluster? How can we estimate how much longer the lifetime of a low-mass star is than the lifetime of a high-mass star? How do we use parallax to measure the distance to stars? Explain the inverse square law for light. If we know the distance to a star, how do we find its luminosity? If we know the luminosity of a star, how do we find the distance? What are apparent magnitude and absolute magnitude? How do they relate to apparent brightness and luminosity? What is meant by spectral type? What spectral type is the hottest? Which is the coolest? What is meant by luminosity class? What are the three basic types of binary stars?arrow_forward1. Planet A has an orbital period of 12 years and radius that is 0.033 times the radius of the star. Calculate the fractional dip of the star brightness in the case that planet A is transiting. Give the answer as a number. Quote the formula you use and explain any assumptions you have to make. 2. Planet B has an orbital period of 1 year and is located closer to its star than planet A. You succeed in detecting planet B with the radial velocity technique as well! From this measurement you calculate a minimum mass of planet B to be 75% that of the Earth. (a) Since you detect the planet with both transit method and radial velocity method, what do you know about the inclination of the planetary system? (b) Given this inclination, estimate the true mass of planet B (in units of Earth mass). You do not need to do a detailed calculation, just explain the argument. 3. You also measure the radius of planet B to be the same as Earth, one Earth radius. (a) How does the density of planet B compare…arrow_forwardProblem 4. Stellar Temperature, Color, and Size a) (Palen, et. al., 2nd, Problem 45) Rigel has a Hipparcos parallax of 0.00412 arcsec. Given Rigel and Betelgeuse appear almost equally bright in the sky, i) which star is actually more luminous? ii) Betelgeuse appears reddish while Rigel appears bluish white. Which star is larger and why? b) (Palen, et. al., 2nd, Problem 46) Sirius is actually a binary pair of two A-type stars. The brighter and fainter of the pair is called the Dog Star and Pup Star, respectively (they are in the constellation Canis Major). The Dog Star is 6,000 times brighter than the Pup Star even though both stars are the same distance from us. Compare the i) temperature ii) luminosities iii) sizes (radii) of these two stars. (CALCULATE using the principles of brightness and the Stefan-Boltzmann law, do not look up the answers! HINT: Star letter type is a measure of temperature)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStaxHorizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781938168284/9781938168284_smallCoverImage.gif)
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305960961/9781305960961_smallCoverImage.gif)
Horizons: Exploring the Universe (MindTap Course ...
Physics
ISBN:9781305960961
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning