Hinsdale Astro TEST
... 14. Is this a young star or an old star? Image H 15. Give the proper name of this substellar brown dwarf. 16. What type of radiation does this type of object mainly emit? ...
... 14. Is this a young star or an old star? Image H 15. Give the proper name of this substellar brown dwarf. 16. What type of radiation does this type of object mainly emit? ...
1 Star Formation and Main Sequence Evolution Condensation
... but fragments into clumps with a range of masses ...
... but fragments into clumps with a range of masses ...
Document
... Radiation from stars is not a perfect continuous spectrum There are particular wavelengths that are missing The missing wavelengths correspond to the absorption spectrum of a number of elements Although is seems sensible to assume that the elements concerned are in the Earth’s atmosphere, th ...
... Radiation from stars is not a perfect continuous spectrum There are particular wavelengths that are missing The missing wavelengths correspond to the absorption spectrum of a number of elements Although is seems sensible to assume that the elements concerned are in the Earth’s atmosphere, th ...
Unit 1
... • a. Because this is the only phase that is common to all stars • b. because most stars die at the end of main sequence phase • c. because most stars in the sky are created at about the same time • d. because this is the longest lasting phase in each star life ...
... • a. Because this is the only phase that is common to all stars • b. because most stars die at the end of main sequence phase • c. because most stars in the sky are created at about the same time • d. because this is the longest lasting phase in each star life ...
Name
... 29. The supernova that was recorded in China in 1054 was so bright that it was visible in daylight. It was visible for about ______________months. The spreading gases from the explosion form what is now called the _____________________ ________________. 30. In 1987 a supernova called _______________ ...
... 29. The supernova that was recorded in China in 1054 was so bright that it was visible in daylight. It was visible for about ______________months. The spreading gases from the explosion form what is now called the _____________________ ________________. 30. In 1987 a supernova called _______________ ...
Physics 1025: Lecture 18 Stellar Magnitudes, Absolute Magnitudes
... brighter? Thirdly, the eye cannot integrate add up light – it either sees a dim object or not; it is an instantaneous detector. Eye estimates of brightness are called visual magnitudes, mv It is better to use photographs which can have long exposures and thus integrate up the light; these are typica ...
... brighter? Thirdly, the eye cannot integrate add up light – it either sees a dim object or not; it is an instantaneous detector. Eye estimates of brightness are called visual magnitudes, mv It is better to use photographs which can have long exposures and thus integrate up the light; these are typica ...
Astro 10 Practice Test 2
... 15. If you wanted to determine the composition of the interstellar medium, which of the following techniques would be the most effective? a. Send a spacecraft into Earth orbit to collect samples of this material. b. Look at light from the ISM that is reflected off the surfaces of nearby stars. c. O ...
... 15. If you wanted to determine the composition of the interstellar medium, which of the following techniques would be the most effective? a. Send a spacecraft into Earth orbit to collect samples of this material. b. Look at light from the ISM that is reflected off the surfaces of nearby stars. c. O ...
Mass Segregation in Globular Clusters
... A second, related prediction is that more-massive stars should sink toward the center of a cluster because of their lower speeds. This mass segregation should occur because the maximum radius to which a star can “climb” against the force of gravity pulling it toward the middle is only dependent upo ...
... A second, related prediction is that more-massive stars should sink toward the center of a cluster because of their lower speeds. This mass segregation should occur because the maximum radius to which a star can “climb” against the force of gravity pulling it toward the middle is only dependent upo ...
Physics 1025: Lecture 17 Sun (cont.), Stellar Distances, Parallax
... the wavelength shift from the unshifted line λ. The star’s light will be blue-shifted if the star approaches earth. (Note in the case of an expanding nebula like the Crab Nebula, we assume it expands equally in all directions (i.e. spherically) and set VR= VT and can solve for the distance R to the ...
... the wavelength shift from the unshifted line λ. The star’s light will be blue-shifted if the star approaches earth. (Note in the case of an expanding nebula like the Crab Nebula, we assume it expands equally in all directions (i.e. spherically) and set VR= VT and can solve for the distance R to the ...
Our Local Group of Galaxies
... The Sgr dSph has proved to be a very interesting object - has 4, perhaps 6+, globular clusters of its own, and is currently being disrupted by the tidal field of the Galaxy. Sgr stars are spread over a large part of the sky, tracing out the orbit. See Law & Majewski 2010 ApJ 714 229 and refs ...
... The Sgr dSph has proved to be a very interesting object - has 4, perhaps 6+, globular clusters of its own, and is currently being disrupted by the tidal field of the Galaxy. Sgr stars are spread over a large part of the sky, tracing out the orbit. See Law & Majewski 2010 ApJ 714 229 and refs ...
Archaeology of the Milky Way - Max-Planck
... center of the Milky Way. “This finding can be explained by the fact that some stars don’t remain on their original orbit around the center, but are able to migrate inwards and outwards,” says Rix. New computer simulations support this scenario for the process of star migration. The Milky Way is a s ...
... center of the Milky Way. “This finding can be explained by the fact that some stars don’t remain on their original orbit around the center, but are able to migrate inwards and outwards,” says Rix. New computer simulations support this scenario for the process of star migration. The Milky Way is a s ...
chap17_s05_probs
... Given a star with an apparent magnitude of 10.0, and an absolute magnitude of 2.5, you are asked to find the distance to the star. ANSWER: Stars appear fainter if located further away, just like any luminous object. The magnitude of a star represents its brightness, either its perceived brightness, ...
... Given a star with an apparent magnitude of 10.0, and an absolute magnitude of 2.5, you are asked to find the distance to the star. ANSWER: Stars appear fainter if located further away, just like any luminous object. The magnitude of a star represents its brightness, either its perceived brightness, ...
1. Base your answer to the following question
... (1) the distance traveled by light in one year (2) the time it takes light to travel one year (3) the time it takes light to go once around the Earth's orbit (4) the distance the Earth moves in one year ...
... (1) the distance traveled by light in one year (2) the time it takes light to travel one year (3) the time it takes light to go once around the Earth's orbit (4) the distance the Earth moves in one year ...
Measuring the Milky Way
... These objects are very close to the Galactic center. The orbit on the right is the best fit; it assumes a central black hole of 3.7 million solar masses. ...
... These objects are very close to the Galactic center. The orbit on the right is the best fit; it assumes a central black hole of 3.7 million solar masses. ...
Vampy Astronomy Syllabus
... Make rough angular measurements between objects in the night sky using only your hand. Locate significant constellations in the night sky. Conduct family and friends on a tour of the night sky. Explain what is meant by the statement, “When we look at the night sky, we look into the past.” View the s ...
... Make rough angular measurements between objects in the night sky using only your hand. Locate significant constellations in the night sky. Conduct family and friends on a tour of the night sky. Explain what is meant by the statement, “When we look at the night sky, we look into the past.” View the s ...
chap17_f04_probs
... Given a star with an apparent magnitude of 10.0, and an absolute magnitude of 2.5, you are asked to find the distance to the star. ANSWER: Stars appear fainter if located further away, just like any luminous object. The magnitude of a star represents its brightness, either its perceived brightness, ...
... Given a star with an apparent magnitude of 10.0, and an absolute magnitude of 2.5, you are asked to find the distance to the star. ANSWER: Stars appear fainter if located further away, just like any luminous object. The magnitude of a star represents its brightness, either its perceived brightness, ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.