H-R Diagram
... To identify the characteristics of a star from data in the diagram To classify a star by its position in the diagram To compare the life cycle stages of stars based on their positions in the diagram Background The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature ...
... To identify the characteristics of a star from data in the diagram To classify a star by its position in the diagram To compare the life cycle stages of stars based on their positions in the diagram Background The Hertzsprung-Russell diagram, or H-R diagram, is a graph in which a star's temperature ...
Classifying the Spectra of Stars:
... presence of spectral features due to absorption. The amount of this energy deficit is proportional to the approximate triangular area of the line. Now we convert this triangular area to a rectangle with the height of actual continuum. The width of this rectangle is the equivalent width and is measur ...
... presence of spectral features due to absorption. The amount of this energy deficit is proportional to the approximate triangular area of the line. Now we convert this triangular area to a rectangle with the height of actual continuum. The width of this rectangle is the equivalent width and is measur ...
N5128PNSydney
... O is the most efficient coolant for the nebula < 15% of the stellar luminosity (1-2x104 L )סּis emitted in a single collisionally excited line O++ 1D2 – 3P2 [O III]5007Å This strong line allows detection of PN; high [O III]/Hα ratio discriminates against H I I regions Other lines of H, He, N, Ne, A ...
... O is the most efficient coolant for the nebula < 15% of the stellar luminosity (1-2x104 L )סּis emitted in a single collisionally excited line O++ 1D2 – 3P2 [O III]5007Å This strong line allows detection of PN; high [O III]/Hα ratio discriminates against H I I regions Other lines of H, He, N, Ne, A ...
Stars, Galaxies, and the Universe Section 1 Section 1
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
Key Areas covered
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
Dark Matter: What is it?
... And do not interact at all. The earth is just a silly ball To them, through which they simply pass, Like dustmaids down a drafty hall Or photons through a pane of glass. ...
... And do not interact at all. The earth is just a silly ball To them, through which they simply pass, Like dustmaids down a drafty hall Or photons through a pane of glass. ...
Globular Clusters - Lick Observatory
... Elinor Gates, Edgar Navarro; Lick Observatory; 40” Nickel Telescope ...
... Elinor Gates, Edgar Navarro; Lick Observatory; 40” Nickel Telescope ...
Key Areas covered
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
... The Big Bang Theory took place around 13.8 billion years ago. The universe was originally very hot and very dense concentrated in a tiny point known as a singularity (smaller than an atom). It caused our universe to expand suddenly from the singularity bringing time and space into existence. Followi ...
Lecture11 - UCSB Physics
... •A) All the known elements have been formed by the radioactive breakup of the heavy elements formed in the initial Big Bang •B) All of the known elements were formed in the Big Bang •C)H and He were formed in the Big Bang, while the heavier elements have been slowly forming by collisions in cold int ...
... •A) All the known elements have been formed by the radioactive breakup of the heavy elements formed in the initial Big Bang •B) All of the known elements were formed in the Big Bang •C)H and He were formed in the Big Bang, while the heavier elements have been slowly forming by collisions in cold int ...
Stellar Pops 2
... these problems with the current generation of telescopes. – Near-IR abundances studies just getting started – AO-photometry and spectroscopy just now beginning to be put to work ...
... these problems with the current generation of telescopes. – Near-IR abundances studies just getting started – AO-photometry and spectroscopy just now beginning to be put to work ...
Microsoft Word - LifeCycleInteractive
... has contracted. That means that density has increased, and the atoms are closer 4 Core together. If theContracts atoms are closer together, then their atomic collisions should: 5 Supernova 19. The atomic collisions have indicating that theC temperatureStar has:D Star A increased, Star B Star Star E ...
... has contracted. That means that density has increased, and the atoms are closer 4 Core together. If theContracts atoms are closer together, then their atomic collisions should: 5 Supernova 19. The atomic collisions have indicating that theC temperatureStar has:D Star A increased, Star B Star Star E ...
Light and Spectra I (Professor Powerpoint)
... 1. A hot solid, liquid or gas at high pressure has a continuous spectrum. Example : the Sun and a light bulb There is energy at all wavelengths ...
... 1. A hot solid, liquid or gas at high pressure has a continuous spectrum. Example : the Sun and a light bulb There is energy at all wavelengths ...
August 2015 - Shasta Astronomy Club
... California. They also created a video simulation depicting how such dense galaxies can form with a supermassive black hole at their core. Looking up from a planet embedded inside one of the newfound galaxies, an observer would see more than a million stars at once, compared to the few thousand stars ...
... California. They also created a video simulation depicting how such dense galaxies can form with a supermassive black hole at their core. Looking up from a planet embedded inside one of the newfound galaxies, an observer would see more than a million stars at once, compared to the few thousand stars ...
Motions of the Celestial Sphere
... A space ship lands on an unknown planet. The occupants notice that the stars never rise or set but appear to move in circles parallel to the horizon. Where on the planet did the space ship land? a) At the equator. b) At 45 degrees latitude. c) At one of the celestial poles. ...
... A space ship lands on an unknown planet. The occupants notice that the stars never rise or set but appear to move in circles parallel to the horizon. Where on the planet did the space ship land? a) At the equator. b) At 45 degrees latitude. c) At one of the celestial poles. ...
1 - ESO
... • For a variety of reasons, total disk mass is best measured at submillimeter wavelengths. But tau, which is a measure of far-IR excess emission, is much easier to measure and has been determined for an order of magnitude more stars than has dust mass. ...
... • For a variety of reasons, total disk mass is best measured at submillimeter wavelengths. But tau, which is a measure of far-IR excess emission, is much easier to measure and has been determined for an order of magnitude more stars than has dust mass. ...
galaxy evolution
... • Gravitational potential energy of matter is converted into kinetic energy which then heats the gas. • The heat then generates the emission of intense radiation. ...
... • Gravitational potential energy of matter is converted into kinetic energy which then heats the gas. • The heat then generates the emission of intense radiation. ...
lesson V - Caesars
... SUR means over. The surface of the sea is over the rest; a surrealist is an artist who depicts things beyond ordinary reality; and a surfeit is an excess. ALTER means other. An alteration is to make something other than what it was; an alternative is another option, and altruism is thinking of other ...
... SUR means over. The surface of the sea is over the rest; a surrealist is an artist who depicts things beyond ordinary reality; and a surfeit is an excess. ALTER means other. An alteration is to make something other than what it was; an alternative is another option, and altruism is thinking of other ...
Hubble Does Double-Duty Science: Finding Planets and
... Out of 229,701 stars that could be searched, 105 showed flares (128 flares total; some stars flared multiple times). The flare energies and peak intensities are consistent with those seen in nearby active stars (1033-1035 ergs), and show a disconnect with solar flare behavior. Based on the star’s br ...
... Out of 229,701 stars that could be searched, 105 showed flares (128 flares total; some stars flared multiple times). The flare energies and peak intensities are consistent with those seen in nearby active stars (1033-1035 ergs), and show a disconnect with solar flare behavior. Based on the star’s br ...
chap17_s05_probs
... A star is determined to have a surface temperature twice that of the Sun, and a luminosity 64 times greater. What is this star’s radius, expressed in solar units ? ANSWER: Problem 4 is an application of the radius – luminosity – temperature relation for stars. Given two of these values, the third va ...
... A star is determined to have a surface temperature twice that of the Sun, and a luminosity 64 times greater. What is this star’s radius, expressed in solar units ? ANSWER: Problem 4 is an application of the radius – luminosity – temperature relation for stars. Given two of these values, the third va ...
Astronomy news
... "There has been debate about the masses and how intermediate black holes would form. RXTE has provided major new insight." said Dr. Jean Swank. "We caught this otherwise ordinary star in a unique stage in its evolution, toward the end of its life when it has bloated into a red giant phase. As a resu ...
... "There has been debate about the masses and how intermediate black holes would form. RXTE has provided major new insight." said Dr. Jean Swank. "We caught this otherwise ordinary star in a unique stage in its evolution, toward the end of its life when it has bloated into a red giant phase. As a resu ...
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.