Locating Objects in Space
... Largest stars in the upper right and smallest stars in the lower left Five Luminosity Categories: I. supergiants, II. bright giants, III. giants, IV. subgiants, V. main sequence Our Sun is a G2V star ...
... Largest stars in the upper right and smallest stars in the lower left Five Luminosity Categories: I. supergiants, II. bright giants, III. giants, IV. subgiants, V. main sequence Our Sun is a G2V star ...
PowerPoint - Chandra X
... Chandra’s image of NGC 7027 represents the first detection of X-rays from this young planetary nebula that is about 700 years old. A bubble of 3 million degree Celsius gas with a length about a hundred times that of our solar system is shown in the image. The image is brighter to the upper right -- ...
... Chandra’s image of NGC 7027 represents the first detection of X-rays from this young planetary nebula that is about 700 years old. A bubble of 3 million degree Celsius gas with a length about a hundred times that of our solar system is shown in the image. The image is brighter to the upper right -- ...
PHYS 175 (2014) Final Examination Name: ___SOLUTION_____
... a) reflected blue light from a nearby star. b) reflected red light from a nearby star. c) blue light emitted by hot (excited) hydrogen atoms. d) red light emitted by hot (excited) hydrogen atoms. e) x-‐‑rays emitted by hot (excited) hydrogen atoms. ...
... a) reflected blue light from a nearby star. b) reflected red light from a nearby star. c) blue light emitted by hot (excited) hydrogen atoms. d) red light emitted by hot (excited) hydrogen atoms. e) x-‐‑rays emitted by hot (excited) hydrogen atoms. ...
Test #3
... a) there are no stars in these areas. , b) stars in that region are hidden by interstellar gas. c) stars in that region are hidden by dark dust particles. , d) many brown dwarfs in those areas absorb light. ...
... a) there are no stars in these areas. , b) stars in that region are hidden by interstellar gas. c) stars in that region are hidden by dark dust particles. , d) many brown dwarfs in those areas absorb light. ...
Characteristics of Stars Stars Analyzing Starlight Star Characteristics
... · spectrographs - device that separates light into different wavelengths (colors) · each star produces a unique spectrum (series of colors and lines) · a star's spectrum tells us elements present (composition) surface temperature how fast the star is moving toward or away from Earth ...
... · spectrographs - device that separates light into different wavelengths (colors) · each star produces a unique spectrum (series of colors and lines) · a star's spectrum tells us elements present (composition) surface temperature how fast the star is moving toward or away from Earth ...
ppt
... fuel it contains divided by the rate at which it burns nuclear fuel. This is roughly equal to the star's mass divided by its luminosity. Therefore, T M / L using the mass luminosity relation: T M / M3.5 or T 1 / M2.5 Therefore, bigger, brighter main sequence stars die younger ...
... fuel it contains divided by the rate at which it burns nuclear fuel. This is roughly equal to the star's mass divided by its luminosity. Therefore, T M / L using the mass luminosity relation: T M / M3.5 or T 1 / M2.5 Therefore, bigger, brighter main sequence stars die younger ...
What stars do Summary: Nuclear burning in stars •
... • Still denser state of matter than electron degeneracy. • Sun: 1,000,000 km diameter • White dwarf: 10,000 km (~ same diameter as Earth) • Neutron star: 20 km • Degenerate pressure of neutrons can support stars up to 3M ...
... • Still denser state of matter than electron degeneracy. • Sun: 1,000,000 km diameter • White dwarf: 10,000 km (~ same diameter as Earth) • Neutron star: 20 km • Degenerate pressure of neutrons can support stars up to 3M ...
Astro 18 – Section Week 2
... The deeper absorption line at 760nm is caused by our atmosphere's oxygen molecule. The two absorption lines at 720 and 890nm (from methane) appear on Saturn and Titan, but the rings do not have them ...
... The deeper absorption line at 760nm is caused by our atmosphere's oxygen molecule. The two absorption lines at 720 and 890nm (from methane) appear on Saturn and Titan, but the rings do not have them ...
The birth and life of stars
... Main-sequence stars with mass between 0.08 and 0.4Msun convert all of their mass into helium and then stop fusing. Their lifetimes last hundreds of billions of years, so none of these stars has yet left the main sequence. Core hydrogen fusion ceases when hydrogen is exhausted in the core of a ma ...
... Main-sequence stars with mass between 0.08 and 0.4Msun convert all of their mass into helium and then stop fusing. Their lifetimes last hundreds of billions of years, so none of these stars has yet left the main sequence. Core hydrogen fusion ceases when hydrogen is exhausted in the core of a ma ...
Chapter 18 Study Guide
... White dwarf 9. What type of star has a low temperature but a high luminosity? (use H-R Diagram to determine) Red supergiant 10. According to the Hertzsprung-Russell diagram, what relationship exist between the brightness and temperature of a main sequence star? The Hertzsprung- Russell diagram shows ...
... White dwarf 9. What type of star has a low temperature but a high luminosity? (use H-R Diagram to determine) Red supergiant 10. According to the Hertzsprung-Russell diagram, what relationship exist between the brightness and temperature of a main sequence star? The Hertzsprung- Russell diagram shows ...
Key Facts
... expanding point, roughly ten to twenty billion years ago. Since then, the universe has continued to expand, gradually increasing the distance between our Galaxy and external galaxies. The expansion of the universe "stretches" light rays converting blue light into red light and red light into infrare ...
... expanding point, roughly ten to twenty billion years ago. Since then, the universe has continued to expand, gradually increasing the distance between our Galaxy and external galaxies. The expansion of the universe "stretches" light rays converting blue light into red light and red light into infrare ...
U7 Review WS KEY
... Despite all the gas, dust and stars in the universe, the universe is still mostly _empty space_. The sum of all matter, energy and space is _the universe_. Why do we think that dark matter exists? not enough visible matter in universe to account for effects of gravity due to mass. Einstein’s ...
... Despite all the gas, dust and stars in the universe, the universe is still mostly _empty space_. The sum of all matter, energy and space is _the universe_. Why do we think that dark matter exists? not enough visible matter in universe to account for effects of gravity due to mass. Einstein’s ...
Study Guide for Stars and Galaxies Quiz ANSWER KEY
... 1. Are stars usually by themselves or in groups of two or more? Stars are usually found in groups of two (binary stars) or three (triple stars) 2. List the three types of galaxies, and give properties of each. Be able to sketch each. a. elliptical contains old stars and little gas/dust b. irr ...
... 1. Are stars usually by themselves or in groups of two or more? Stars are usually found in groups of two (binary stars) or three (triple stars) 2. List the three types of galaxies, and give properties of each. Be able to sketch each. a. elliptical contains old stars and little gas/dust b. irr ...
Stars Part 2 - westscidept
... Earth is called apparent magnitude. • A dim star might look bright to us on Earth if it is close. At the same time, we may barely be able to see a very bright star if it is too far away. • Betelgeuse which is one of the brightest stars in the sky is 310 light years away. There are thousands of close ...
... Earth is called apparent magnitude. • A dim star might look bright to us on Earth if it is close. At the same time, we may barely be able to see a very bright star if it is too far away. • Betelgeuse which is one of the brightest stars in the sky is 310 light years away. There are thousands of close ...
Galaxies and the Universe
... galaxies exist, besides the Milky Way • He observed that galaxies were moving away from each other – Hubble Law – the farther away a galaxy is, the faster it is moving away from us; supports the Big Bang Theory ...
... galaxies exist, besides the Milky Way • He observed that galaxies were moving away from each other – Hubble Law – the farther away a galaxy is, the faster it is moving away from us; supports the Big Bang Theory ...
The Cosmic Dawn : Physics of the First Luminous Objects
... stars, accreting black holes (BHs) and galaxies, shaped the early universe at the end of the cosmic dark ages. According to the modern theory of cosmological structure formation, the hierarchical assembly of dark matter (DM) halos provided the gravitational potential wells that allowed gas to form s ...
... stars, accreting black holes (BHs) and galaxies, shaped the early universe at the end of the cosmic dark ages. According to the modern theory of cosmological structure formation, the hierarchical assembly of dark matter (DM) halos provided the gravitational potential wells that allowed gas to form s ...
www.astro.utu.fi
... 100 million years first stars form 1 billion years first galaxies form 2-4 billion years stars of the halo of Milky Way form circa 4 billion years disk of galaxy begins to form 9 billion years Sun and Earth form ...
... 100 million years first stars form 1 billion years first galaxies form 2-4 billion years stars of the halo of Milky Way form circa 4 billion years disk of galaxy begins to form 9 billion years Sun and Earth form ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.