1. - TeacherWeb
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
Goal: To understand how Saturn formed and what its core is
... • How? By using the Doppler effect! • When an object moves towards us, the wavelengths of light it emits (or sound on earth) decrease (because the object is closer to us when the wave finishes than when it starts • the shrink in the wave is the distance the object travels in the time it takes to mak ...
... • How? By using the Doppler effect! • When an object moves towards us, the wavelengths of light it emits (or sound on earth) decrease (because the object is closer to us when the wave finishes than when it starts • the shrink in the wave is the distance the object travels in the time it takes to mak ...
Peer Instruction/Active Learning
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
fact packet spring 2014
... The greater the mass of an object the greater the gravitational force. The force increases as the distance decreases between the objects. ...
... The greater the mass of an object the greater the gravitational force. The force increases as the distance decreases between the objects. ...
Galaxies Powerpoint
... • A galaxy is a large grouping of stars, gas, and dust in space that are held together by gravity. • The largest galaxies contain more than a trillion stars. Smaller galaxies may have only a few million. • Scientists estimate the number of stars from the size and brightness of the galaxy. ...
... • A galaxy is a large grouping of stars, gas, and dust in space that are held together by gravity. • The largest galaxies contain more than a trillion stars. Smaller galaxies may have only a few million. • Scientists estimate the number of stars from the size and brightness of the galaxy. ...
Main Types of Galaxies
... • A galaxy is a large grouping of stars, gas, and dust in space that are held together by gravity. • The largest galaxies contain more than a trillion stars. Smaller galaxies may have only a few million. • Scientists estimate the number of stars from the size and brightness of the galaxy. ...
... • A galaxy is a large grouping of stars, gas, and dust in space that are held together by gravity. • The largest galaxies contain more than a trillion stars. Smaller galaxies may have only a few million. • Scientists estimate the number of stars from the size and brightness of the galaxy. ...
Ages of Star Clusters - Indiana University Astronomy
... Massive stars burn their nuclear fuel faster than lower mass stars and leave the main sequence sooner. In a cluster in which all the stars formed at the same time, the stars “peel off” the main sequence from the top, leaving only progressively less and less massive stars remaining on the main sequen ...
... Massive stars burn their nuclear fuel faster than lower mass stars and leave the main sequence sooner. In a cluster in which all the stars formed at the same time, the stars “peel off” the main sequence from the top, leaving only progressively less and less massive stars remaining on the main sequen ...
Exploring The Universe
... • Quasars may be infant galaxies. • In 1960, a faint object was matched with a strong radio signal. This object was called a quasar. • quasar quasi-stellar radio sources; very luminous objects that produce energy at a high rate and that are thought to be the most distant objects in the universe • Ea ...
... • Quasars may be infant galaxies. • In 1960, a faint object was matched with a strong radio signal. This object was called a quasar. • quasar quasi-stellar radio sources; very luminous objects that produce energy at a high rate and that are thought to be the most distant objects in the universe • Ea ...
ON THE TEMPERATURE STRUCTURE OF THE
... One potential source of error is simply that we have underestimated the extent of G0.253-0.016 along the observed line-of-sight, and so the true effective column of the cloud is much smaller than we are assuming in the fiducial models. However we find that similar environmental conditions are also r ...
... One potential source of error is simply that we have underestimated the extent of G0.253-0.016 along the observed line-of-sight, and so the true effective column of the cloud is much smaller than we are assuming in the fiducial models. However we find that similar environmental conditions are also r ...
photons.
... Earth’s atmosphere at what wavelengths?: A: at visible, ultraviolet, and gamma-ray wavelengths B: at all wavelengths C: only at infrared wavelengths D: only at optical wavelengths E: at radio, visible, and part of the infrared wavelengths ...
... Earth’s atmosphere at what wavelengths?: A: at visible, ultraviolet, and gamma-ray wavelengths B: at all wavelengths C: only at infrared wavelengths D: only at optical wavelengths E: at radio, visible, and part of the infrared wavelengths ...
Star Arsenic, Star Selenium The Big Bang produced lots of hydrogen
... The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine the chemical makeup of stars, the origin of the elements, the ages of ...
... The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine the chemical makeup of stars, the origin of the elements, the ages of ...
ASTR 553/554 (1) : Questions
... questions that follow, work with either I(R) or µ(R), which ever your prefer. b. What's the surface brightness, I(0), at the center of the Milky Way disk, and what's the disk's total luminosity in LV, . c. Using MV, = 4.82, calculate the Milky Way's absolute magnitude, MV. If viewed from Virgo (dist ...
... questions that follow, work with either I(R) or µ(R), which ever your prefer. b. What's the surface brightness, I(0), at the center of the Milky Way disk, and what's the disk's total luminosity in LV, . c. Using MV, = 4.82, calculate the Milky Way's absolute magnitude, MV. If viewed from Virgo (dist ...
Diapositiva 1
... The spectra of two nebulous objects near NGC 1999 (ApJ 113, 697). On a series of direct photographs taken with the Crosslyer reflector in 1946 and 1947 and centered on the diffuse nebula NGC 1999, there appear several peculiar nebulous objects. The brightest of these (referred to hereafter as "No. 1 ...
... The spectra of two nebulous objects near NGC 1999 (ApJ 113, 697). On a series of direct photographs taken with the Crosslyer reflector in 1946 and 1947 and centered on the diffuse nebula NGC 1999, there appear several peculiar nebulous objects. The brightest of these (referred to hereafter as "No. 1 ...
Equation of state constraints for the cold dense matter inside neutron
... Kazan Federal University, 420008, Kremlevskaya 18, Kazan, Russia ...
... Kazan Federal University, 420008, Kremlevskaya 18, Kazan, Russia ...
Lecture 16, PPT version
... • Extraordinarily bright, so can use them to measure distances to galaxies that are very far away: b = L / (4 d2) • Supernovae are the source of all heavy chemical elements! • The heavy chemical elements are produced during the explosion itself, when there is more than enough energy to fuse nuclei ...
... • Extraordinarily bright, so can use them to measure distances to galaxies that are very far away: b = L / (4 d2) • Supernovae are the source of all heavy chemical elements! • The heavy chemical elements are produced during the explosion itself, when there is more than enough energy to fuse nuclei ...
Measuring the Milky Way
... the center of the Galaxy, which is the source of these phenomena. An accretion disk surrounding the black hole emits enormous amounts of radiation. ...
... the center of the Galaxy, which is the source of these phenomena. An accretion disk surrounding the black hole emits enormous amounts of radiation. ...
Luminosity
... • Parallax is the apparent motion of an object due to the motion of the observer • Star seen from two sites separated by 1 AU with a parallax of 1 arc second is at 1 parsec ~ 3 light years • Distance in parsecs=1/Parallax in arc seconds ...
... • Parallax is the apparent motion of an object due to the motion of the observer • Star seen from two sites separated by 1 AU with a parallax of 1 arc second is at 1 parsec ~ 3 light years • Distance in parsecs=1/Parallax in arc seconds ...
Today`s Objectives - RanelaghALevelPhysics
... • The luminosity of a star is the total energy given out per second, so it's the power. • From the graph the luminosity increases rapidly with temperature, which gives rise to Stefan's Law. • The total energy per unit time radiated by a black body is proportional to the fourth power of its absolute ...
... • The luminosity of a star is the total energy given out per second, so it's the power. • From the graph the luminosity increases rapidly with temperature, which gives rise to Stefan's Law. • The total energy per unit time radiated by a black body is proportional to the fourth power of its absolute ...
Friday, April 25 - Otterbein University
... • In the plane of the Milky Way the thinning was slower and depended upon the direction in which he looked • Flaws: – Observations made only in visible spectrum – Did not take into account absorption by interstellar gas and dust ...
... • In the plane of the Milky Way the thinning was slower and depended upon the direction in which he looked • Flaws: – Observations made only in visible spectrum – Did not take into account absorption by interstellar gas and dust ...
Marcelo Borges Fernandes1, Michaela Kraus2, Jiri Kubát2
... Abstract: We report on the variation of the rapidly rotating SMC supergiant star LHA 115-S 23 (AzV 172) for which we found a decrease in effective temperature from 11000 K to 9000 K and a simultaneous increase in rotation velocity from 110 km/s to 150 km/s (the latter corresponding to 75% of its cri ...
... Abstract: We report on the variation of the rapidly rotating SMC supergiant star LHA 115-S 23 (AzV 172) for which we found a decrease in effective temperature from 11000 K to 9000 K and a simultaneous increase in rotation velocity from 110 km/s to 150 km/s (the latter corresponding to 75% of its cri ...
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.