GET WORKSHEETS FROM MY ASSIGNMENTS PAGE Mrs
... 4.The most likely star color to have a planet with life would be ____ because: a. b. Consider Life Span and Life Zone size ...
... 4.The most likely star color to have a planet with life would be ____ because: a. b. Consider Life Span and Life Zone size ...
Synthetic Stellar Populations Encyclopedia of Astronomy & Astrophysics eaa.iop.org Guy Worthey
... wavelengths. Isochrones of 15 billion year age are shown for [Fe/H] = −0.5, 0.0 and 0.5 dex. The effect of changing the abundance is to shift the isochrones in temperature. The [Fe/H] = 0.0 isochrone has a ‘horizontal branch’, an ‘asymptotic giant branch’ and a ‘post-asymptotic giant branch’ (marked ...
... wavelengths. Isochrones of 15 billion year age are shown for [Fe/H] = −0.5, 0.0 and 0.5 dex. The effect of changing the abundance is to shift the isochrones in temperature. The [Fe/H] = 0.0 isochrone has a ‘horizontal branch’, an ‘asymptotic giant branch’ and a ‘post-asymptotic giant branch’ (marked ...
Cosmology with GMRT
... Hierarchical Galaxy Formation The smallest objects collapse first, bigger objects form by the merger of smaller ones Kauffman & White 1993 ...
... Hierarchical Galaxy Formation The smallest objects collapse first, bigger objects form by the merger of smaller ones Kauffman & White 1993 ...
March 2010 - Pomona Valley Amateur Astronomers
... term Club members recalled Bob’s years with our Club and were glad to see him again and of course to learn more about his topic – E.E (Edward Emerson) Barnard. My own knowledge of this man was rudimentary and I was only familiar with an object called Barnard’s Star. After hearing about the rags to r ...
... term Club members recalled Bob’s years with our Club and were glad to see him again and of course to learn more about his topic – E.E (Edward Emerson) Barnard. My own knowledge of this man was rudimentary and I was only familiar with an object called Barnard’s Star. After hearing about the rags to r ...
answers2006_07_BC
... Type Ia supernovae all have very similar brightness, and are bright enough to be seen out to large redshifts, so can be used to check how the expansion of the universe changes with time. ...
... Type Ia supernovae all have very similar brightness, and are bright enough to be seen out to large redshifts, so can be used to check how the expansion of the universe changes with time. ...
The Northern Winter Constellations
... The Constellations of the Winter Sky If you live in the northern latitudes and you scan the sky from the southern horizon to the region overhead, you should be able to see the following constellations on a clear winter night: Orion the Hunter, Canis Major the Great Dog, Canis Minor the Little Dog, T ...
... The Constellations of the Winter Sky If you live in the northern latitudes and you scan the sky from the southern horizon to the region overhead, you should be able to see the following constellations on a clear winter night: Orion the Hunter, Canis Major the Great Dog, Canis Minor the Little Dog, T ...
The Life Cycle of Stars Stars are a fascinating part of our universe
... (97%) and Helium (3%) gas. Gravity causes the dust and gas to clump together. The number of atoms in the clump increases and the mass of the clump increases. This initial mass determines the mass of the star. As the gravitational attraction in the nebula grows the clump contracts and flattens into a ...
... (97%) and Helium (3%) gas. Gravity causes the dust and gas to clump together. The number of atoms in the clump increases and the mass of the clump increases. This initial mass determines the mass of the star. As the gravitational attraction in the nebula grows the clump contracts and flattens into a ...
Powerpoint Presentation (large file)
... thermonuclear reactions • The sequence of thermonuclear reactions stops here, because the formation of elements heavier than iron requires an input of energy rather than causing energy to be released ...
... thermonuclear reactions • The sequence of thermonuclear reactions stops here, because the formation of elements heavier than iron requires an input of energy rather than causing energy to be released ...
2. - Quia
... if such a civilization exists? 4 What travels at the speed of light that is capable of carrying information? 5. What would be the most practical way to get information from Earth to Sirius if we knew that a civilization existed around this star? 6. SETI scientists are listening to stars for messages ...
... if such a civilization exists? 4 What travels at the speed of light that is capable of carrying information? 5. What would be the most practical way to get information from Earth to Sirius if we knew that a civilization existed around this star? 6. SETI scientists are listening to stars for messages ...
Andromeda Galaxy www.AssignmentPoint.com The Andromeda
... The Andromeda Galaxy (/ænˈdrɒmɨdə/), also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million lightyears) from Earth. It is the nearest major galaxy to the Milky Way and was often referred to as the Great Andromeda Nebula in older texts. It received i ...
... The Andromeda Galaxy (/ænˈdrɒmɨdə/), also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million lightyears) from Earth. It is the nearest major galaxy to the Milky Way and was often referred to as the Great Andromeda Nebula in older texts. It received i ...
Leaving the Main Sequence
... it can not support itself under its own weight. So compressed that protons and electrons join to form neutrons. Core shrinks instantaneously. Rest of star falls in, then rebounds off of neutron star or black hole created in core collapse. Rebound is outward explosion. 6. Neutron star or black hole - ...
... it can not support itself under its own weight. So compressed that protons and electrons join to form neutrons. Core shrinks instantaneously. Rest of star falls in, then rebounds off of neutron star or black hole created in core collapse. Rebound is outward explosion. 6. Neutron star or black hole - ...
PDF - BYU Studies
... Mendelayev (1834–1907)15 publish the periodic table of the chemical elements, but even that was incomplete. For example, the element helium— crucial for stellar energy production—was first detected in spectral lines of an eclipsed sun in 1868 and was finally found on earth in 1895.16 It is easy to o ...
... Mendelayev (1834–1907)15 publish the periodic table of the chemical elements, but even that was incomplete. For example, the element helium— crucial for stellar energy production—was first detected in spectral lines of an eclipsed sun in 1868 and was finally found on earth in 1895.16 It is easy to o ...
the curious incident of the dog in the night-time
... Olbers was not the originator of the quandary, and in reality, it is not a paradox but rather a riddle or puzzle1 ) states that if the universe is infinite and filled uniformly with stars, then the brightness of the night sky should be equivalent to the day. As an analogy think about the old adage t ...
... Olbers was not the originator of the quandary, and in reality, it is not a paradox but rather a riddle or puzzle1 ) states that if the universe is infinite and filled uniformly with stars, then the brightness of the night sky should be equivalent to the day. As an analogy think about the old adage t ...
General Astronomy - Stockton University
... very young and still slightly eruptive. – They have characteristically fast rotation, which broadens the spectra lines. At the equator, the rotation velocity is only slightly less than escape velocity; if there is a slight eruption, a cloud of hydrogen escapes. – The type star, γ Cas is the brightes ...
... very young and still slightly eruptive. – They have characteristically fast rotation, which broadens the spectra lines. At the equator, the rotation velocity is only slightly less than escape velocity; if there is a slight eruption, a cloud of hydrogen escapes. – The type star, γ Cas is the brightes ...
Right Ascension
... increases. What happens next depends on the mass of the star. For stars with less than 0.4 M, the temperature does not get hot enough for anything else to happen. The star will end its life as an inert ball of helium, just radiating away its internal heat. But the universe is not yet old enough for ...
... increases. What happens next depends on the mass of the star. For stars with less than 0.4 M, the temperature does not get hot enough for anything else to happen. The star will end its life as an inert ball of helium, just radiating away its internal heat. But the universe is not yet old enough for ...
Astronomy 1020 Exam 4 Review Questions
... shape of the curve in the outer regions of the Galaxy suggest about the halo? When compared to the light distribution, what else can you say about the halo? How long does it take the Sun to complete one orbit about the center of the Galaxy? As such, what is the length of its galactic year? How old i ...
... shape of the curve in the outer regions of the Galaxy suggest about the halo? When compared to the light distribution, what else can you say about the halo? How long does it take the Sun to complete one orbit about the center of the Galaxy? As such, what is the length of its galactic year? How old i ...
file - University of California San Diego
... emission line. A redshift of two or greater will pull this emission line from the ultraviolet into the visible range. A large number of weaker absorption lines produced by Lyman alpha from these quasars remain obscured in the UV range, however, at wavelengths just short of the transition to the visi ...
... emission line. A redshift of two or greater will pull this emission line from the ultraviolet into the visible range. A large number of weaker absorption lines produced by Lyman alpha from these quasars remain obscured in the UV range, however, at wavelengths just short of the transition to the visi ...
Star Formation 1 - Center for Astrostatistics
... resumes. For a cloud of 1057 atoms (= 1 Mo = 1 solar mass), this cooling & contraction takes 10 6 years (Kelvin & Helmholtz, mid-1800s). The Sun should thus remain hot for this time after collapse begins. Is this astrophysical model OK? No! 19th century geology told us the Earth has been warmed by t ...
... resumes. For a cloud of 1057 atoms (= 1 Mo = 1 solar mass), this cooling & contraction takes 10 6 years (Kelvin & Helmholtz, mid-1800s). The Sun should thus remain hot for this time after collapse begins. Is this astrophysical model OK? No! 19th century geology told us the Earth has been warmed by t ...
11.1 Introduction
... The interstellar medium is a complex environment, worthy of its own lecture course. For our present purposes, suffice to say that among the various components of the ISM, it is the Giant Molecular Clouds that are associated with sites of star formation. Images taken at near-infrared wavelengths (λ ...
... The interstellar medium is a complex environment, worthy of its own lecture course. For our present purposes, suffice to say that among the various components of the ISM, it is the Giant Molecular Clouds that are associated with sites of star formation. Images taken at near-infrared wavelengths (λ ...
Lecture 10 Spectra of Stars and Binaries
... • Are there stars with temperatures higher than 50000K? • Are hoJer stars brighter than cooler stars? Are they more luminous? • Why did it take so long to find L & T stars? ...
... • Are there stars with temperatures higher than 50000K? • Are hoJer stars brighter than cooler stars? Are they more luminous? • Why did it take so long to find L & T stars? ...
Lecture 12
... Measure the energy flux from the star (integrated over all wavelengths): inverse square law, L F= 4pd 2 …gives the bolometric luminosity if the distance d is known. Can determine the distance directly if we can measure the ...
... Measure the energy flux from the star (integrated over all wavelengths): inverse square law, L F= 4pd 2 …gives the bolometric luminosity if the distance d is known. Can determine the distance directly if we can measure the ...
Cosmology Handouts
... Rainbows reveal that white light is a combination of all the colours. In 1666, Isaac Newton showed that white light could be separated into its component colours using glass prisms. Soon scientists were using this new tool to analyze the light coming from several different light sources. Some scient ...
... Rainbows reveal that white light is a combination of all the colours. In 1666, Isaac Newton showed that white light could be separated into its component colours using glass prisms. Soon scientists were using this new tool to analyze the light coming from several different light sources. Some scient ...
Nova
... In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, called the Roche lobe, within which material is gravitationally bound to the star (see Figure 1). The Roche surface is, therefore, the surface along which the gravitational potential is comm ...
... In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, called the Roche lobe, within which material is gravitationally bound to the star (see Figure 1). The Roche surface is, therefore, the surface along which the gravitational potential is comm ...
Core-collapse supernovae and their massive progenitors
... images of their host galaxies suggests that they are more likely to be associated with the brightest regions of star formation in irregular host galaxies than normal Type II SNe (Fruchter et al. 2006). The mission lifetime of SWIFT combined with follow-up from ground and space promises more exciting ...
... images of their host galaxies suggests that they are more likely to be associated with the brightest regions of star formation in irregular host galaxies than normal Type II SNe (Fruchter et al. 2006). The mission lifetime of SWIFT combined with follow-up from ground and space promises more exciting ...
New light on our Sun`s fate - Space Telescope Science Institute
... of most stars. Shortly after a star forms, its central core reaches a temperature of tens of millions of degrees, hot enough to fuse hydrogen into helium and energy. During this phase of nuclear “burning,” a star’s appearance remains quite stable, with little change in its luminosity, size, and temp ...
... of most stars. Shortly after a star forms, its central core reaches a temperature of tens of millions of degrees, hot enough to fuse hydrogen into helium and energy. During this phase of nuclear “burning,” a star’s appearance remains quite stable, with little change in its luminosity, size, and temp ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.