Properties of Main Sequence Stars
... Determine approximate values of the luminosity, temperature, mass and radius of an O5 and M5 main sequence star using the HR diagram on the accompanying page. ...
... Determine approximate values of the luminosity, temperature, mass and radius of an O5 and M5 main sequence star using the HR diagram on the accompanying page. ...
Stellar Evolution
... Considering that material in the accretion disk around a white dwarf heats up to ~ 1 million oK, in which wavelength band do you expect that it radiates the most strongly? ...
... Considering that material in the accretion disk around a white dwarf heats up to ~ 1 million oK, in which wavelength band do you expect that it radiates the most strongly? ...
Life Cycle of Stars Flipbook Assignment
... 1. Gather in groups of 3 (one for each mass type) 2. Share each flip book explaining the stages to the other two 3. Complete the worksheet provided. Life Cycle of Stars ...
... 1. Gather in groups of 3 (one for each mass type) 2. Share each flip book explaining the stages to the other two 3. Complete the worksheet provided. Life Cycle of Stars ...
The Evolutionary Cycle of Stars
... White Dwarf The final evolutionary state whose mass is not too high. This is the last stage of stellar evolution. ...
... White Dwarf The final evolutionary state whose mass is not too high. This is the last stage of stellar evolution. ...
Life Cycle of Stars
... •When atomic nuclei form a nucleus •Hydrogen fuses into helium •All stars (low and high mass) go through this •How long a star lives depends on its mass •Small stars use their fuel slow = longer lives ...
... •When atomic nuclei form a nucleus •Hydrogen fuses into helium •All stars (low and high mass) go through this •How long a star lives depends on its mass •Small stars use their fuel slow = longer lives ...
Comparing Earth, Sun and Jupiter
... All emitted from the million-degree corona Show a very stormy and dynamic atmosphere, the source of the solar wind Ultraviolet: UV radiation comes from the chromosphere, between the photosphere and corona Infrared: Long-wavelength radiation from the chromosphere and corona Dark spots cause ...
... All emitted from the million-degree corona Show a very stormy and dynamic atmosphere, the source of the solar wind Ultraviolet: UV radiation comes from the chromosphere, between the photosphere and corona Infrared: Long-wavelength radiation from the chromosphere and corona Dark spots cause ...
PowerPoint Presentation - Super Massive Black Holes
... stars known to exist in the universe; with a radius of only about 7 mi, they can have a mass of about two times that of the Sun. ...
... stars known to exist in the universe; with a radius of only about 7 mi, they can have a mass of about two times that of the Sun. ...
Foundation 1 - Discovering Astronomy
... As the temperature in the interior rises, nuclear reactions produce outward force and balances the inward force of gravity hydrostatic equilibrium = star becomes stable and contraction stopsmain-sequence star ...
... As the temperature in the interior rises, nuclear reactions produce outward force and balances the inward force of gravity hydrostatic equilibrium = star becomes stable and contraction stopsmain-sequence star ...
Stars and Black Holes: Stars A star is a massive, luminous ball of
... Astronomers believe each galaxy in the universe contains at least one supermassive black hole. Astronomers can detect black holes by the presence of rapidly _______________ moving around an ________________. This point is a black hole. The gravity of a black hole is so strong that is can pull a star ...
... Astronomers believe each galaxy in the universe contains at least one supermassive black hole. Astronomers can detect black holes by the presence of rapidly _______________ moving around an ________________. This point is a black hole. The gravity of a black hole is so strong that is can pull a star ...
Review3-2016
... How do we use the atomic emission and absorption spectra to find the composition of a star? How do we determine the rotation period of a star? How do we determine the distance to a star using Stellar Parallax? What is an H-R diagram and what information does it give us? One of the Ca spectral lines ...
... How do we use the atomic emission and absorption spectra to find the composition of a star? How do we determine the rotation period of a star? How do we determine the distance to a star using Stellar Parallax? What is an H-R diagram and what information does it give us? One of the Ca spectral lines ...
Kepler`s Laws wkst
... 8. V404 Cygni is a dark object orbited by a star in the constellation Cygnus. Many astronomers believe the object is a black hole. Suppose the star’s orbit has a mean radius of 2.30 1010 m and a period of 6.47 days. What is the mass of the black hole? How many times larger is the mass of the black ...
... 8. V404 Cygni is a dark object orbited by a star in the constellation Cygnus. Many astronomers believe the object is a black hole. Suppose the star’s orbit has a mean radius of 2.30 1010 m and a period of 6.47 days. What is the mass of the black hole? How many times larger is the mass of the black ...
How the Universe Works Extreme Stars Name 1. When a star dies
... How the Universe Works Extreme Stars Name _______________ 1. When a star dies (gravity) (fusion) wins out. 2. The sun will run out of fuel in about (3) (7) (10) billion years. 3. When the sun runs out of hydrogen fuel, it will become a (red giant) (neutron star) (black hole). 4. Eventually, the heli ...
... How the Universe Works Extreme Stars Name _______________ 1. When a star dies (gravity) (fusion) wins out. 2. The sun will run out of fuel in about (3) (7) (10) billion years. 3. When the sun runs out of hydrogen fuel, it will become a (red giant) (neutron star) (black hole). 4. Eventually, the heli ...
Exploration of the Universe
... 1. What astronomical observations allow us to know the time of day, the date, direction and the timing of ocean tides? 2. What is the difference between an asterism and a constellation? 3. How would observations of stars differ from the observations of planets? 4. What is retrograde motion? 5. What ...
... 1. What astronomical observations allow us to know the time of day, the date, direction and the timing of ocean tides? 2. What is the difference between an asterism and a constellation? 3. How would observations of stars differ from the observations of planets? 4. What is retrograde motion? 5. What ...
Almach or Alberio
... Imagine seeing the stars of Alberio, but much closer together, both in separation on the sky and in true distance from each other. The pair's primary is a giant golden star which has a diameter 80 times that of our Sun (large enough to swallow the orbit of Venus) and a luminosity 2,000 times that of ...
... Imagine seeing the stars of Alberio, but much closer together, both in separation on the sky and in true distance from each other. The pair's primary is a giant golden star which has a diameter 80 times that of our Sun (large enough to swallow the orbit of Venus) and a luminosity 2,000 times that of ...
g9u4c12part3
... consume their fuel faster than smaller stars Become red giants. (supergiants) last for only 7 billion years. they collapse in on themselves causing a massive explosion called a supernova. the remaining core of the supernova will eventually collapse to form a neutron star. A sphere only 10 km ...
... consume their fuel faster than smaller stars Become red giants. (supergiants) last for only 7 billion years. they collapse in on themselves causing a massive explosion called a supernova. the remaining core of the supernova will eventually collapse to form a neutron star. A sphere only 10 km ...
solution
... white dwarf or neutron star, the giant swells beyond its Roche lobe and the smaller, more dense companion takes on inflating matter from its bigger companion, this causes the mass of the core remnant to exceed about 3 M , thus forming a black hole; and finally 3) two neutron stars are in close orbi ...
... white dwarf or neutron star, the giant swells beyond its Roche lobe and the smaller, more dense companion takes on inflating matter from its bigger companion, this causes the mass of the core remnant to exceed about 3 M , thus forming a black hole; and finally 3) two neutron stars are in close orbi ...
CMC The Universe – Pics of the day 1. Neutron Star A Neutron Star
... OpenOffice didn't let me upload the video here in the presentation, so I just could write the link ...
... OpenOffice didn't let me upload the video here in the presentation, so I just could write the link ...
Astronomy Learning Objectives and Study Questions for Chapter 13
... 6. Briefly describe the conditions that must be met if a neutron star is to behave as an X-ray burster. 1. As He and H-shell fusion cause a low-mass star like Sol to expand a second time, its outer atmosphere will waft off into space to create a/an _____. A. planetary nebula B. supernova C. nova D. ...
... 6. Briefly describe the conditions that must be met if a neutron star is to behave as an X-ray burster. 1. As He and H-shell fusion cause a low-mass star like Sol to expand a second time, its outer atmosphere will waft off into space to create a/an _____. A. planetary nebula B. supernova C. nova D. ...
Black Holes - University of Surrey
... Black Holes The ‘Black Hole’ is a theoretical concept in the study of gravitation. A Black Hole is an extremely dense body and its gravitational field is so strong that, if the body is large enough, nothing, including electromagnetic radiation, can escape from its vicinity. The Black Hole derives it ...
... Black Holes The ‘Black Hole’ is a theoretical concept in the study of gravitation. A Black Hole is an extremely dense body and its gravitational field is so strong that, if the body is large enough, nothing, including electromagnetic radiation, can escape from its vicinity. The Black Hole derives it ...
Star Vocabulary
... 1. Apparent Magnitude- a measure of how bright a star appears to an observer. 2. Absolute Magnitude- a measure of how bright a star would be if all stars were at the same distance. 3. Luminosity- the actual brightness of a star. Depends only on the size and temperature of the star. 4.Doppler Effect- ...
... 1. Apparent Magnitude- a measure of how bright a star appears to an observer. 2. Absolute Magnitude- a measure of how bright a star would be if all stars were at the same distance. 3. Luminosity- the actual brightness of a star. Depends only on the size and temperature of the star. 4.Doppler Effect- ...
Old Sample Exam #2
... a) a comet b) the Sun c) Mars orbit d) Jupiter e) Earth _____ 2) What is the luminosity of a white dwarf with surface temperature equal to the Sun? (in solar luminosities) a) 104 b) 102 c) 1 d) 10-2 e) 10-4 _____ 3) How long can a star run on gravity without nuclear fusion? (in years) a) 1031 b) 101 ...
... a) a comet b) the Sun c) Mars orbit d) Jupiter e) Earth _____ 2) What is the luminosity of a white dwarf with surface temperature equal to the Sun? (in solar luminosities) a) 104 b) 102 c) 1 d) 10-2 e) 10-4 _____ 3) How long can a star run on gravity without nuclear fusion? (in years) a) 1031 b) 101 ...
Use this form to take notes in class about stars
... Stars of Spectral Classes B to M 9. What color is our sun? ___________what class is it in? ...
... Stars of Spectral Classes B to M 9. What color is our sun? ___________what class is it in? ...
Cygnus X-1
Cygnus X-1 (abbreviated Cyg X-1) is a well-known galactic X-ray source, thought to be a black hole, in the constellation Cygnus. It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources seen from Earth, producing a peak X-ray flux density of 6977229999999999999♠2.3×10−23 Wm−2 Hz−1 (7003230000000000000♠2.3×103 Jansky). Cygnus X-1 was the first X-ray source widely accepted to be a black hole and it remains among the most studied astronomical objects in its class. The compact object is now estimated to have a mass about 14.8 times the mass of the Sun and has been shown to be too small to be any known kind of normal star, or other likely object besides a black hole. If so, the radius of its event horizon is about 7004440000000000000♠44 km.Cygnus X-1 belongs to a high-mass X-ray binary system about 7019574266339685654♠6070 ly from the Sun that includes a blue supergiant variable star designated HDE 226868 which it orbits at about 0.2 AU, or 20% of the distance from the Earth to the Sun. A stellar wind from the star provides material for an accretion disk around the X-ray source. Matter in the inner disk is heated to millions of degrees, generating the observed X-rays. A pair of jets, arranged perpendicular to the disk, are carrying part of the energy of the infalling material away into interstellar space.This system may belong to a stellar association called Cygnus OB3, which would mean that Cygnus X-1 is about five million years old and formed from a progenitor star that had more than 7001400000000000000♠40 solar masses. The majority of the star's mass was shed, most likely as a stellar wind. If this star had then exploded as a supernova, the resulting force would most likely have ejected the remnant from the system. Hence the star may have instead collapsed directly into a black hole.Cygnus X-1 was the subject of a friendly scientific wager between physicists Stephen Hawking and Kip Thorne in 1975, with Hawking betting that it was not a black hole. He conceded the bet in 1990 after observational data had strengthened the case that there was indeed a black hole in the system. This hypothesis has not been confirmed due to a lack of direct observation but has generally been accepted from indirect evidence.