Introduction to the HR Diagram
... Important features of the HR diagram: The Y-axis is the total energy output of the star, called the Luminosity. The luminosity of stars is measured in units of the luminosity of the Sun or one solar luminosity. Thus a star that has a luminosity of 10 solar luminosities outputs 10 times more energ ...
... Important features of the HR diagram: The Y-axis is the total energy output of the star, called the Luminosity. The luminosity of stars is measured in units of the luminosity of the Sun or one solar luminosity. Thus a star that has a luminosity of 10 solar luminosities outputs 10 times more energ ...
Planet Hunters
... of several hundred worlds, but astronomers have never given up the combined efforts of many hard-working scientists and brilliant young dream of seeing such worlds directly. Such observations would let planet hunters. Maybe they’ll even be answered by some of you! i us find new planets with a single ...
... of several hundred worlds, but astronomers have never given up the combined efforts of many hard-working scientists and brilliant young dream of seeing such worlds directly. Such observations would let planet hunters. Maybe they’ll even be answered by some of you! i us find new planets with a single ...
G-stars - Gemini Astronomie
... Every star develops from a cloud (giant molecular cloud GMC) consisting almost entirely of the elements hydrogen and helium with a small percentage of other elements as well as dust, mostly from the death of older stars. Due to the force of its own gravity, the cloud begins to collapse inward when t ...
... Every star develops from a cloud (giant molecular cloud GMC) consisting almost entirely of the elements hydrogen and helium with a small percentage of other elements as well as dust, mostly from the death of older stars. Due to the force of its own gravity, the cloud begins to collapse inward when t ...
the star
... • The sun – a typical yellow dwarf star. Type G2 with 8 planets • Proxima Centauri – closest of the triplet of stars loosely known as alpha-Centauri Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light ye ...
... • The sun – a typical yellow dwarf star. Type G2 with 8 planets • Proxima Centauri – closest of the triplet of stars loosely known as alpha-Centauri Proxima Centauri is a faint red star that orbits Alpha-Centauri A and B with a period of about one million years. Proxima Centauri is 4.22 light ye ...
Introduction to Astronomy
... •The study of the properties of light that depend on wavelength •The light pattern produced by passing light through a prism, which spreads out the various wavelengths, is called a spectrum (plural: spectra) ...
... •The study of the properties of light that depend on wavelength •The light pattern produced by passing light through a prism, which spreads out the various wavelengths, is called a spectrum (plural: spectra) ...
A Unique Environmental Studies Program
... The Pointers. Not very far from the Southern Cross you will see two quite bright stars. These are known as "The Pointers". They form part of the constellation of "The Centaur" and, being the two brightest stars in that constellation, are called Alpha Centauri and Beta Centauri. If you look at Alpha ...
... The Pointers. Not very far from the Southern Cross you will see two quite bright stars. These are known as "The Pointers". They form part of the constellation of "The Centaur" and, being the two brightest stars in that constellation, are called Alpha Centauri and Beta Centauri. If you look at Alpha ...
Scientists discover surprising importance of `I Love Q` for
... "Just imagine a ball the size of the sun being squeezed until it's the size of Bozeman," he said. "All the gravity of the sun, but amplified by factors of thousands." ...
... "Just imagine a ball the size of the sun being squeezed until it's the size of Bozeman," he said. "All the gravity of the sun, but amplified by factors of thousands." ...
October 2012 - astronomy for beginners
... are named. Cygnus the Swan, Leo the Lion and Orion the Hunter are perhaps exceptions and do (with a little imagination) look remotely like those characters. The stars making up the constellations are not generally physically associated but are simply formed by a ‘line of sight’ effect. The brighter ...
... are named. Cygnus the Swan, Leo the Lion and Orion the Hunter are perhaps exceptions and do (with a little imagination) look remotely like those characters. The stars making up the constellations are not generally physically associated but are simply formed by a ‘line of sight’ effect. The brighter ...
Studying the Stars
... Now that we can be more accurate in our measurements, stars can have more specific magnitudes like 1.5, 6.73, etc. and even negative numbers for those stars that are brighter than 1st order. ...
... Now that we can be more accurate in our measurements, stars can have more specific magnitudes like 1.5, 6.73, etc. and even negative numbers for those stars that are brighter than 1st order. ...
Powerpoint file
... amplitude. • Multiple measurements of nearest 60 F-, G-, and K- stars. • Directly test rocky planet formation ...
... amplitude. • Multiple measurements of nearest 60 F-, G-, and K- stars. • Directly test rocky planet formation ...
Nebulae
... The Sun is just a star, an average star. It just looks so big and bright, because it is so close, compared with other stars. ...
... The Sun is just a star, an average star. It just looks so big and bright, because it is so close, compared with other stars. ...
ppt - Astronomy & Physics
... by Stefan-Boltzmann law they must be very large (big surface area) Outer parts of the Sun’s atmosphere will engulf Earth and Mars when it becomes a red supergiant! ...
... by Stefan-Boltzmann law they must be very large (big surface area) Outer parts of the Sun’s atmosphere will engulf Earth and Mars when it becomes a red supergiant! ...
HW #8 Stellar Evolution I Solutions
... star to collapse and heat. However, even though no hydrogen fusion is possible in the collapsing core (since there is no hydrogen in the core anymore, it being all converted into helium) a thin shell of hydrogen in a shell around the collapsing core is pushed deeper into the star as the core collaps ...
... star to collapse and heat. However, even though no hydrogen fusion is possible in the collapsing core (since there is no hydrogen in the core anymore, it being all converted into helium) a thin shell of hydrogen in a shell around the collapsing core is pushed deeper into the star as the core collaps ...
The Characteristics of Stars
... Stars are scattered across the Universe at different distances from Earth. The varying distances make it difficult to visually compare stars to determine which are emitting more light and which are emitting less. Although apparent magnitude values help us classify stars according to their observed b ...
... Stars are scattered across the Universe at different distances from Earth. The varying distances make it difficult to visually compare stars to determine which are emitting more light and which are emitting less. Although apparent magnitude values help us classify stars according to their observed b ...
Tutorial: Motion
... If you get stuck or are not sure of your answer ask another group If you get really stuck or don’t understand what the Lecture Tutorial is asking as one of us for help ...
... If you get stuck or are not sure of your answer ask another group If you get really stuck or don’t understand what the Lecture Tutorial is asking as one of us for help ...
Talk
... - numerous (population studies are feasible) - well understood in terms of single star evolution - nearby and easily accessible with 2-8m telescopes - no mass transfer systems 18 PCEBs identified from RVs SDSS ...
... - numerous (population studies are feasible) - well understood in terms of single star evolution - nearby and easily accessible with 2-8m telescopes - no mass transfer systems 18 PCEBs identified from RVs SDSS ...
Exercise 9
... declination (think of this as a space latitude). The declination runs from -90° (celestial south pole) to +90° (celestial north pole). Both of these coordinates are laminated to the metal pole bases. In addition, the stars have been colored according to their spectral classes; blue balls represent O ...
... declination (think of this as a space latitude). The declination runs from -90° (celestial south pole) to +90° (celestial north pole). Both of these coordinates are laminated to the metal pole bases. In addition, the stars have been colored according to their spectral classes; blue balls represent O ...
Astronomy 12 - hrsbstaff.ednet.ns.ca
... (d) Describe the following types of black holes: stellar-mass, supermassive and primordial. (d) How are stellar-mass black holes detected and their masses inferred? G. Mass-Luminosity Relation. A nearby star happens to be twice as massive as the Sun, and also twice as large. (a) What is its main seq ...
... (d) Describe the following types of black holes: stellar-mass, supermassive and primordial. (d) How are stellar-mass black holes detected and their masses inferred? G. Mass-Luminosity Relation. A nearby star happens to be twice as massive as the Sun, and also twice as large. (a) What is its main seq ...
Today`s Powerpoint
... temperature from spectrum (black-body curve or spectral lines), then find surface area, then find radius (sphere surface area is 4 p R2) ...
... temperature from spectrum (black-body curve or spectral lines), then find surface area, then find radius (sphere surface area is 4 p R2) ...
The Milky Way * A Classic Galaxy
... • She studied the Large Magellanic Cloud – what looked like a super star cluster of millions or billions of stars • Found stars with the right color and light curves to be classified as Cepheids • Like, Delta Cephei, Eta Aquilae, and other ...
... • She studied the Large Magellanic Cloud – what looked like a super star cluster of millions or billions of stars • Found stars with the right color and light curves to be classified as Cepheids • Like, Delta Cephei, Eta Aquilae, and other ...
PHYS 2421 EXAM #5 Wednesday, November 11
... 98. To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tu ...
... 98. To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tu ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.