COSMIC PERSPECTIVE
9th Edition
ISBN: 9780135729458
Author: Bennett
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 15, Problem 44EAP
a.
To determine
The brightest star in our sky.
b.
To determine
The faintest star in our sky.
c.
To determine
The most luminous star in our sky.
d.
To determine
The least luminous star in our sky.
e.
To determine
The star having highest surface temperature.
f.
To determine
The star having lowest surface temperature.
g.
To determine
The star most similar to Sun.
h.
To determine
The red supergiant star.
i.
To determine
The star of largest radius.
j.
To determine
The star in which fusion process is finished fusion hydrogen in its core.
k.
To determine
The most massive star
i.
To determine
The star having longest life-time.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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?
Tutorial
Two stars have the same apparent magnitude, my = 14, but Star A has a parallax of 0.060 arc seconds and Star B has a parallax of 0.040 arc seconds.
Which star is farther from Earth?
What are their distances (in pc)?
What are their absolute magnitudes?
Which star is more massive?
Part 1 of 4
Which star is farther from Earth? Using the parallax equation we see that the distance is inversely related to the parallax by:
1
Parc seconds
d pc
Which star has the smaller parallax?
O Star A
O Star B
Stellar Classification and H-R Diagram Placement (40 points
available).
a. Where is your star located on the H-R diagram (luminosity class/region of the
diagram, spectral class, luminosity/brightness)? How does this compare to that of
The sun ?
Discuss the inferences of the specific placement and stellar classification of your
star with respect to mass, size/radius, color/temperature, composition?
c. Discuss how this placement on the diagram relates to the star’s observed stage of
evolution, previous evolution, and expected future evolutionary path. How does
this compare to that of the Sun?
d. What is the estimated total lifespan of your star and what is the estimated age of
your star right now? How does this compare to that of the Sun?
All of them is about Lutyen star .
Chapter 15 Solutions
COSMIC PERSPECTIVE
Ch. 15 - Prob. 1VSCCh. 15 - Prob. 2VSCCh. 15 - Prob. 3VSCCh. 15 - Prob. 4VSCCh. 15 - Prob. 5VSCCh. 15 - Prob. 6VSCCh. 15 - Prob. 1EAPCh. 15 - Prob. 2EAPCh. 15 - Prob. 3EAPCh. 15 - Prob. 4EAP
Ch. 15 - Prob. 5EAPCh. 15 - Prob. 6EAPCh. 15 - Prob. 7EAPCh. 15 - Prob. 8EAPCh. 15 - Prob. 9EAPCh. 15 - Prob. 10EAPCh. 15 - Prob. 11EAPCh. 15 - Prob. 12EAPCh. 15 - Prob. 13EAPCh. 15 - Prob. 14EAPCh. 15 - Prob. 15EAPCh. 15 - Prob. 16EAPCh. 15 - Prob. 17EAPCh. 15 - Prob. 18EAPCh. 15 - Prob. 19EAPCh. 15 - Prob. 20EAPCh. 15 - Prob. 21EAPCh. 15 - Prob. 22EAPCh. 15 - Prob. 23EAPCh. 15 - Prob. 24EAPCh. 15 - Prob. 25EAPCh. 15 - Prob. 26EAPCh. 15 - Prob. 27EAPCh. 15 - Prob. 28EAPCh. 15 - Prob. 29EAPCh. 15 - Prob. 30EAPCh. 15 - Prob. 31EAPCh. 15 - Prob. 32EAPCh. 15 - Prob. 33EAPCh. 15 - Prob. 34EAPCh. 15 - Prob. 35EAPCh. 15 - Prob. 36EAPCh. 15 - Prob. 37EAPCh. 15 - Prob. 40EAPCh. 15 - Prob. 42EAPCh. 15 - Prob. 44EAPCh. 15 - Prob. 45EAPCh. 15 - Prob. 46EAPCh. 15 - Prob. 47EAPCh. 15 - Prob. 48EAPCh. 15 - Prob. 49EAPCh. 15 - Prob. 50EAPCh. 15 - Prob. 52EAPCh. 15 - Prob. 53EAPCh. 15 - Prob. 54EAPCh. 15 - Prob. 55EAPCh. 15 - Prob. 56EAPCh. 15 - Prob. 57EAPCh. 15 - Prob. 58EAPCh. 15 - Prob. 59EAP
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
- "51 Pegasi" is the name of the first normal star (besides the Sun) around which a planet was discovered. It is in the constellation Pegasus the horse. Its parallax is measured to be 0.064 arcsec. a. What is its distance from us? b. The apparent brightness is 1.79 × 10-10 J/(s·m2 ). What is the luminosity? How does that compare with that of the Sun? Look up the temperature: how doarrow_forwardHow does one go about these questions?arrow_forwardChoose the correct statements concerning spectral classes of stars. (Give ALL correct answers, i.e., B, AC, BCD...) A) Neutral hydrogen lines dominate the spectrum for stars with temperatures around 10,000 K because a lot of the hydrogen is in the n=2 level. B) Hydrogen lines are weak in type O-stars because most of it is completely ionized. C) Oh Be A Fine Guy/Girl Kiss Me, is a mnemonic for remembering spectral classes. D) The spectral sequence has recently been expanded to include L, T, and Y classes. E) K-stars are dominated by lines from ionized helium because they are so hot. F) The spectral types of stars arise primarily as a result of differences in temperature.arrow_forward
- Each choice below lists a spectral type and luminosity class for a star. Which one is a hot main sequence star? OA. spectral type 09, luminosity class I O B. spectral type 01, luminosity class V O C. spectral type M2, luminosity class I OD. spectral type M2, luminosity class Varrow_forwardStellar parallax is used as a tool to determine distances to stars. Describe how stellar parallax works. Also discuss the limiting factors in its use and the maximum distance that can be accurately measured using this technique. Do you believe this concept is unique to astronomy or used in other technical disciplines? Provide examples.arrow_forwardSuppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0x10-12 watt/m?. How far away is it? Give your answer in both kilometers and light-years.arrow_forward
- On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to measure Procyon's parallax angle from Venus, what would the parallax angle be? (Note: Earth's orbital radius is larger than Venus's orbital radius.) A. more than 0.29 arcseconds O B. 0.29 arcseconds O C. less than 0.29 arcseconds D. zero arcseconds (no parallax)arrow_forwardThe spectral type of a star is directly related to its color. Recall that a star emits light as a blackbody, which has a particular shape to its spectrum, as shown in this figure. Based on this, what basic property of a star determines its color (and thus its spectral type)? Choose one: A. age B. composition C. radius D. temperaturearrow_forward1:Which star has been redshifted the most? 2:Which star is moving towards us the fastest? Star C Star D Star A Star B 3:The wavelength of this spectral feature is measured to be 600nm in the lab, and 609 in Star A. What is the radial velocity of Star A? using km/s,arrow_forward
- What are the three characteristics we use to classify stars? B IVE = 而arrow_forwardIn this unit, you learned about the Hertzsprung-Russell diagram which is used to classify stars based on their temperature and luminosity. How would you classify stars based on their radii on that diagram (you can draw a picture if that is easier for you to articulate). Please explain your reasoning (Hint: I recommend citing physical laws that you learned about earlier in the semester; if you are really confused, part of the lab from this unit might make the idea more clear to you).arrow_forwardWhich of the following WOULD NOT characterizes the type(s) of star we would find at g, m, n, o, and p on the Hertzsprung-Russel Diagram (Figure 4) a. are all smaller than q,i,h. b. fuse hydrogen into helium. c. are called, “the main sequence”. d. fuse He into heavier elements. e. get smaller towards the right sidearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
Stars and GalaxiesPhysicsISBN:9781305120785Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax
Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
Stars and Galaxies
Physics
ISBN:9781305120785
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning