MS 1512–CB58 - Columbia University Department of Astronomy
... (Steidel et al., 1996). Discovered by Yee et al. (1996), cB58 is, as far as we can tell, a typical ∼ L∗ galaxy magnified by a factor of ∼ 30 by the foreground cluster MS 1512+36 at z = 0.37 (Seitz et al., 1998). This fortuitous alignment makes it by far the brightest known member of the Lyman break ...
... (Steidel et al., 1996). Discovered by Yee et al. (1996), cB58 is, as far as we can tell, a typical ∼ L∗ galaxy magnified by a factor of ∼ 30 by the foreground cluster MS 1512+36 at z = 0.37 (Seitz et al., 1998). This fortuitous alignment makes it by far the brightest known member of the Lyman break ...
The Superhero's Universe: Observing the Cosmos with X-ray Vision and Beyond
... Galaxy: Centaurus A ★ Discovered in 1847 ★ 14 million light-years away ★ 5th brightest visible galaxy ...
... Galaxy: Centaurus A ★ Discovered in 1847 ★ 14 million light-years away ★ 5th brightest visible galaxy ...
a Supernova!
... But there is 100x as much energy again in the form of rapidly-moving material (kinetic energy)… and 100 times as much again in the form of neutrinos. That is, the energy in the form of neutrinos is 10,000 times as much as the visible light it produces!! ...
... But there is 100x as much energy again in the form of rapidly-moving material (kinetic energy)… and 100 times as much again in the form of neutrinos. That is, the energy in the form of neutrinos is 10,000 times as much as the visible light it produces!! ...
Barium Stars Observed with the Coude Echelle Spectrometer
... evolved objects - a TrA (K4 111) and E Peg (K2 Ib) - show a selective enrichment of Ba (the Sr abundance is not yet known). It seems to me that the high-quality CES/Reticon data of the Ba star confirm that a chemical peculiarity of this kind may occur among evolved objects. The question arises which ...
... evolved objects - a TrA (K4 111) and E Peg (K2 Ib) - show a selective enrichment of Ba (the Sr abundance is not yet known). It seems to me that the high-quality CES/Reticon data of the Ba star confirm that a chemical peculiarity of this kind may occur among evolved objects. The question arises which ...
Shining Light on the Stars: The Hertzsprung-Russell
... Our Sun is located here on the diagram, and as before, the 122 brightest stars visible in the night sky from Earth are located here. But what about all the stars in the nearby solar neighborhood, most of which are too faint to be seen without a telescope? We immediately see that these two groups of ...
... Our Sun is located here on the diagram, and as before, the 122 brightest stars visible in the night sky from Earth are located here. But what about all the stars in the nearby solar neighborhood, most of which are too faint to be seen without a telescope? We immediately see that these two groups of ...
Lives of stars HR
... envelope in a violent explosion called a supernova. Supernova are so bright they can shine brighter than an entire galaxy, and they can be seen across the visible universe. ...
... envelope in a violent explosion called a supernova. Supernova are so bright they can shine brighter than an entire galaxy, and they can be seen across the visible universe. ...
Life Cycle of a Star - Intervention Worksheet
... Black hole Supernova White dwarf Planetary nebula Main Sequence Black dwarf ...
... Black hole Supernova White dwarf Planetary nebula Main Sequence Black dwarf ...
1 - Quia
... 15. During nuclear fusion, what element is changed into helium? A. Oxygen B. Carbon C. Hydrogen D. Nitrogen 16. What is the first stage in the life cycle of a star? (2 points) ...
... 15. During nuclear fusion, what element is changed into helium? A. Oxygen B. Carbon C. Hydrogen D. Nitrogen 16. What is the first stage in the life cycle of a star? (2 points) ...
astronomy 31 - UNC Physics
... D. All transitions down to the second excited state result in Paschen series photons. The first transition in the series (third excited state to second excited state) is called Paschen alpha. The second transition in the series (fourth excited state to second excited state) is called Paschen beta. 2 ...
... D. All transitions down to the second excited state result in Paschen series photons. The first transition in the series (third excited state to second excited state) is called Paschen alpha. The second transition in the series (fourth excited state to second excited state) is called Paschen beta. 2 ...
Zairamink_Lifecycle of a Star
... If you have some where around that mass then after the super nova the protons and electrons of atoms are forced together into neutrons. When neutron stars form, they maintain the momentum of the entire star, but now they're just a few kilometers across. This causes them to spin at tremendous rates, ...
... If you have some where around that mass then after the super nova the protons and electrons of atoms are forced together into neutrons. When neutron stars form, they maintain the momentum of the entire star, but now they're just a few kilometers across. This causes them to spin at tremendous rates, ...
AST1001.ch2
... • all lie at about the same distance from Earth. • may actually be quite far away from each other. ...
... • all lie at about the same distance from Earth. • may actually be quite far away from each other. ...
Galaxy clusters - University of Iowa Astrophysics
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
Astro-MilkyWay
... a. Light intensity falls off with the inverse square of distance. b. Stars that appear brighter are on average closer to Earth. c. Large pulsating objects have longer periods than small pulsating objects. d. Objects with large proper motion tend to be closer than objects with small proper motion. e. ...
... a. Light intensity falls off with the inverse square of distance. b. Stars that appear brighter are on average closer to Earth. c. Large pulsating objects have longer periods than small pulsating objects. d. Objects with large proper motion tend to be closer than objects with small proper motion. e. ...
The star and the trees prostrate
... core that eventually cools and contracts gravitationally to about the size of the Earth. The result is a white dwarf: the more massive it is, the greater its inward gravitational pull, and the smaller it becomes. A teaspoonful of white dwarf material would weigh five-and-a-half tons or more in the E ...
... core that eventually cools and contracts gravitationally to about the size of the Earth. The result is a white dwarf: the more massive it is, the greater its inward gravitational pull, and the smaller it becomes. A teaspoonful of white dwarf material would weigh five-and-a-half tons or more in the E ...
Today`s Powerpoint
... Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV ...
... Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV ...
Astronomy 401 Lecture 1 Overview of the Universe 1 Class overview
... independent of r. The time H0−1 is called the Hubble time, and is an approximate timescale for the age of the Universe (it is only equal to the age of the Universe if galaxy velocities were the same at all times in the past). H0−1 = 13.8 Gyr. Let’s use this to return to Olbers’ paradox. We saw above ...
... independent of r. The time H0−1 is called the Hubble time, and is an approximate timescale for the age of the Universe (it is only equal to the age of the Universe if galaxy velocities were the same at all times in the past). H0−1 = 13.8 Gyr. Let’s use this to return to Olbers’ paradox. We saw above ...
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.