Earth Science Notes
... Nebulas – large clouds of gas and dust As particles in the nebula contract they increase in temperature until the reach 10 million K. This is when fusion begins. Energy given off from the fusion process powers the star ...
... Nebulas – large clouds of gas and dust As particles in the nebula contract they increase in temperature until the reach 10 million K. This is when fusion begins. Energy given off from the fusion process powers the star ...
Measuring Stars
... Since Type Ia Supernovae involve an explosion that occurs around a fixed mass (1.4Mʘ ), they are a very homogeneous events, and have about the same luminosity. So they are like standard candles, wherever they occur, they have the same intrinsic luminosity. If we see a type Ia supernova somewhere (in ...
... Since Type Ia Supernovae involve an explosion that occurs around a fixed mass (1.4Mʘ ), they are a very homogeneous events, and have about the same luminosity. So they are like standard candles, wherever they occur, they have the same intrinsic luminosity. If we see a type Ia supernova somewhere (in ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... Why don't we see hydrogen Balmer lines in the spectra of stars with surface temperatures of 3200 K? (a) There is no hydrogen in stars this cool. (b) These stars are so hot that most of the hydrogen is ionised and the atoms cannot absorb energy. (c) These stars are so cool that nearly all of the elec ...
... Why don't we see hydrogen Balmer lines in the spectra of stars with surface temperatures of 3200 K? (a) There is no hydrogen in stars this cool. (b) These stars are so hot that most of the hydrogen is ionised and the atoms cannot absorb energy. (c) These stars are so cool that nearly all of the elec ...
Slide 1 - Documents
... The origin of comets and minor bodies of the Solar System (SS) has been and still is an unsolved puzzle. Oort (1950, Bull. Astron. Inst. Netherlands 11, 91) supported the idea of the existence of a distant cometary reservoir located far from the Sun but still gravitationally bound to the SS, the so ...
... The origin of comets and minor bodies of the Solar System (SS) has been and still is an unsolved puzzle. Oort (1950, Bull. Astron. Inst. Netherlands 11, 91) supported the idea of the existence of a distant cometary reservoir located far from the Sun but still gravitationally bound to the SS, the so ...
Observational Data
... It is likely that the disk of the Milky Way has been formed by continuous accretion of gas from the reservoir, such as the Galactic halo and the IGM, but our simulation already takes into account cosmological gas infall. Our simulation does not take into account the effect of ionizing radiation fiel ...
... It is likely that the disk of the Milky Way has been formed by continuous accretion of gas from the reservoir, such as the Galactic halo and the IGM, but our simulation already takes into account cosmological gas infall. Our simulation does not take into account the effect of ionizing radiation fiel ...
The Stars
... • What are the spectral classes? • Why is a blue star more luminous than a yellow star of the same size? • What does the H-R diagram show us about most stars (main sequence stars)? • What are red giants and white dwarf stars? • What is the mass-luminosity relationship? ...
... • What are the spectral classes? • Why is a blue star more luminous than a yellow star of the same size? • What does the H-R diagram show us about most stars (main sequence stars)? • What are red giants and white dwarf stars? • What is the mass-luminosity relationship? ...
Our Universe
... • The Earth is not expanding and neither is the Milky Way galaxy. • These objects formed under the influence of gravity and stopped moving apart. • Gravity also holds galaxies together into groups and clusters. It is mainly the groups and clusters of galaxies that are moving apart in the universe. ...
... • The Earth is not expanding and neither is the Milky Way galaxy. • These objects formed under the influence of gravity and stopped moving apart. • Gravity also holds galaxies together into groups and clusters. It is mainly the groups and clusters of galaxies that are moving apart in the universe. ...
6th Grade Science Chapter 19 Jeopardy Game
... According to the big bang theory, the universe is about? a. b. c. d. ...
... According to the big bang theory, the universe is about? a. b. c. d. ...
PPT
... The Sun releases energy by fusing four hydrogen nuclei (protons) into one helium nucleus (2 protons and 2 neutrons). Let’s look at details. ...
... The Sun releases energy by fusing four hydrogen nuclei (protons) into one helium nucleus (2 protons and 2 neutrons). Let’s look at details. ...
Booklet 5 – Stellar Processes and Evolution
... Initially, they evolve in the same way as low mass stars, turning into red giants and undergoing a core helium burning phase. In medium mass stars, however, the burning of helium into carbon is no longer the end phase of stellar evolution. When the core helium supply is exhausted, the additional mas ...
... Initially, they evolve in the same way as low mass stars, turning into red giants and undergoing a core helium burning phase. In medium mass stars, however, the burning of helium into carbon is no longer the end phase of stellar evolution. When the core helium supply is exhausted, the additional mas ...
hubble amazing universe worksheet
... 16. The gravitational field around a Black Hole is so large, that _________________ cannot even escape. 17. Most stars revolve at relatively slow speeds, but Hubble detected ones going too _______________. They must be going around a BH. 18. Hubble provided actual evidence that ______________ colli ...
... 16. The gravitational field around a Black Hole is so large, that _________________ cannot even escape. 17. Most stars revolve at relatively slow speeds, but Hubble detected ones going too _______________. They must be going around a BH. 18. Hubble provided actual evidence that ______________ colli ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
... light has taken around ten billion years to reach Earth and are undergoing the most intense type of star formation activity known - a starburst. The astronomers found that these distant starburst galaxies eventually become giant elliptical galaxies - the most massive galaxies in the Universe. They s ...
... light has taken around ten billion years to reach Earth and are undergoing the most intense type of star formation activity known - a starburst. The astronomers found that these distant starburst galaxies eventually become giant elliptical galaxies - the most massive galaxies in the Universe. They s ...
Spring Stargazing - Trimble County Schools
... one of the brightest known stars in the galaxy. It 20,000 times brighter than our sun, but is 2,000 ly away. • Epsilon Aurigau has a companion star, which eclipses it every 27 years, making it noticeably dimmer. This happens in 2009-2011. ...
... one of the brightest known stars in the galaxy. It 20,000 times brighter than our sun, but is 2,000 ly away. • Epsilon Aurigau has a companion star, which eclipses it every 27 years, making it noticeably dimmer. This happens in 2009-2011. ...
Exercise 7
... star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of the nearest stars. Of course, you will need information on where to place the stars ...
... star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of the nearest stars. Of course, you will need information on where to place the stars ...
- Astrocampus
... Betelgeuse is a huge cool red giant, 8 times larger than Rigel. Although they appear to be the same brightness, Rigel is further away (772 light years compared to 644 light years), meaning it is naturally brighter. �e sword of Orion can be seen as three stars hanging diagonally down from his belt. � ...
... Betelgeuse is a huge cool red giant, 8 times larger than Rigel. Although they appear to be the same brightness, Rigel is further away (772 light years compared to 644 light years), meaning it is naturally brighter. �e sword of Orion can be seen as three stars hanging diagonally down from his belt. � ...
Life and fate of a star
... these reactions slowly drain the available hydrogen reservoir. In ● At the end of the red giant phase of the Sun, nuclear fusion reactions another five billion years, the should produce carbon and oxygen atoms from the helium of the core. core of our Sun will run out of Heavier elements only form in ...
... these reactions slowly drain the available hydrogen reservoir. In ● At the end of the red giant phase of the Sun, nuclear fusion reactions another five billion years, the should produce carbon and oxygen atoms from the helium of the core. core of our Sun will run out of Heavier elements only form in ...
Earth
... A. Scientists use kilometers on Earth to measure distance B. Astronomical Units (AU) measure distances between planets C. Neither are big enough to measure outside of our solar system, scientists use a unit based on the speed of light ...
... A. Scientists use kilometers on Earth to measure distance B. Astronomical Units (AU) measure distances between planets C. Neither are big enough to measure outside of our solar system, scientists use a unit based on the speed of light ...
Lecture 13: The stars are suns
... Stars are fusion reactors like our sun, with similar physical properties. Spectroscopes, atomic theory, and especially measurements of stellar distances (1838) made it possible for astronomers to derive properties of stars and establish the Sun-stellar connection. • Physical properties of stars we w ...
... Stars are fusion reactors like our sun, with similar physical properties. Spectroscopes, atomic theory, and especially measurements of stellar distances (1838) made it possible for astronomers to derive properties of stars and establish the Sun-stellar connection. • Physical properties of stars we w ...
PDF version (two pages, including the full text)
... lights. When it was discovered, Proxima was the faintest star known, but it has long lost even this distinction. At a little over 4 light years away, the stars of the Alpha Centauri system are the closest neighbours of our own Sun. In August 2016, a planet orbiting around Proxima was discovered. Ach ...
... lights. When it was discovered, Proxima was the faintest star known, but it has long lost even this distinction. At a little over 4 light years away, the stars of the Alpha Centauri system are the closest neighbours of our own Sun. In August 2016, a planet orbiting around Proxima was discovered. Ach ...
Star in a Box Worksheet - Beginning with solutions
... information panel allows comparisons between the radius, surface temperature, luminosity and mass of the star relative to the Sun.The starting parameters are for a star like the Sun. ...
... information panel allows comparisons between the radius, surface temperature, luminosity and mass of the star relative to the Sun.The starting parameters are for a star like the Sun. ...
Time From the Perspective of a Particle Physicist
... usually cold (100O K or -300O F) usually almost perfect vacuum with 1 atom/cm3 (1 g water = 1023 atoms) Local concentrations: compressed by gravity and form stars. Called Giant Molecular Clouds as molecules have been observed. Need about 1,000,000 times the mass of the Sun in 100 LY volume to initia ...
... usually cold (100O K or -300O F) usually almost perfect vacuum with 1 atom/cm3 (1 g water = 1023 atoms) Local concentrations: compressed by gravity and form stars. Called Giant Molecular Clouds as molecules have been observed. Need about 1,000,000 times the mass of the Sun in 100 LY volume to initia ...
Course Expectations
... How stars evolve off the main sequence on the HR Diagram The types of stars High mass stars produce supernovae, neutron stars and black holes Low mass stars produce white dwarfs, and planetary nebulae Parallax, Cepheid’s and standard candles are methods used to measure distance in space ...
... How stars evolve off the main sequence on the HR Diagram The types of stars High mass stars produce supernovae, neutron stars and black holes Low mass stars produce white dwarfs, and planetary nebulae Parallax, Cepheid’s and standard candles are methods used to measure distance in space ...
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.