Astronomy Assignment #1
... Estimated minimum mass of the planet is ____________ Since the radial velocity curve appears to very much like a sine wave, the orbit must be nearly circular with almost zero eccentricity. ...
... Estimated minimum mass of the planet is ____________ Since the radial velocity curve appears to very much like a sine wave, the orbit must be nearly circular with almost zero eccentricity. ...
Stellar Brightness Apparent magnitude
... Stellar Brightness Apparent magnitude: brightness of a ...
... Stellar Brightness Apparent magnitude: brightness of a ...
Coursework 7 File
... that this is the typical energy associated with collisions between hydrogen nuclei at the centre of the Sun, leading to fusion reactions, calculate the distance of closest approach between two hydrogen nuclei, using the conservation of energy principle. The temperature at the centre of the Sun is ap ...
... that this is the typical energy associated with collisions between hydrogen nuclei at the centre of the Sun, leading to fusion reactions, calculate the distance of closest approach between two hydrogen nuclei, using the conservation of energy principle. The temperature at the centre of the Sun is ap ...
Life Cycles of Stars
... • Star expels outermost layers as Planetary Nebulae • Inert core left as white dwarf • Dwarf has such tiny surface area it takes billions of years to cool • Coolest (oldest?) known: 3900 K ...
... • Star expels outermost layers as Planetary Nebulae • Inert core left as white dwarf • Dwarf has such tiny surface area it takes billions of years to cool • Coolest (oldest?) known: 3900 K ...
Astro 1 & 100 Levine Homework Stars Name:____________________________
... 8. Mark the location of the Sun and label it (it’s a G-type star). (2 points) ...
... 8. Mark the location of the Sun and label it (it’s a G-type star). (2 points) ...
search for extrasolar planets
... controlled for beam combination • Example: five four-telescope interferometers (8m each), hundreds of km apart • Goal: many resolution elements across disk of planets found by TPF ...
... controlled for beam combination • Example: five four-telescope interferometers (8m each), hundreds of km apart • Goal: many resolution elements across disk of planets found by TPF ...
White Dwarf
... • After explosions the remaining core collapses due to gravity. – Radiation too weak ...
... • After explosions the remaining core collapses due to gravity. – Radiation too weak ...
Exoplanets. I
... Planets do not orbit the Sun - they both orbit the center of mass. The radius of the orbit is inversely proportional to the mass The radius of the Sun’s orbit with respect to the Earth is 1/300,000 AU, or 500 km R 1 M1 = R 2 M 2 ...
... Planets do not orbit the Sun - they both orbit the center of mass. The radius of the orbit is inversely proportional to the mass The radius of the Sun’s orbit with respect to the Earth is 1/300,000 AU, or 500 km R 1 M1 = R 2 M 2 ...
Document
... Kepler sought a geometrical model of the universe that would be consistent with the best observations available (i.e. Tycho’s). ...
... Kepler sought a geometrical model of the universe that would be consistent with the best observations available (i.e. Tycho’s). ...
ASTR 1010 – Spring 2016 – Study Notes Dr. Magnani
... should change as the Earth went part of the way around its orbit. Since no observed shift in position is detected with the naked eye over many months, the Earth could not be moving around t ...
... should change as the Earth went part of the way around its orbit. Since no observed shift in position is detected with the naked eye over many months, the Earth could not be moving around t ...
Understanding Stars
... Every element has it’s own unique spectrum – Use this to identify the composition of a gas • Chromosphere or corona Extremely dense things (opaque gases, liquids or solids) the atoms are too close – Emit a continuous spectrum • photosphere Stefan-Boltzman Law A dense hot object emits light of all co ...
... Every element has it’s own unique spectrum – Use this to identify the composition of a gas • Chromosphere or corona Extremely dense things (opaque gases, liquids or solids) the atoms are too close – Emit a continuous spectrum • photosphere Stefan-Boltzman Law A dense hot object emits light of all co ...
Sample Exam Questions
... a) red supergiant b) black hole c) pulsar d) all pull equally 30. Which of the following exists almost exclusively in the halo of the Milky Way? a) globular star clusters b) open star clusters c) stellar associations d) cold gas and dust clouds 31. A galaxy that has just a little dust, but lots of r ...
... a) red supergiant b) black hole c) pulsar d) all pull equally 30. Which of the following exists almost exclusively in the halo of the Milky Way? a) globular star clusters b) open star clusters c) stellar associations d) cold gas and dust clouds 31. A galaxy that has just a little dust, but lots of r ...
Unit 1
... electrons merge into neutrons, taking energy away from the core • The core collapses, and the layers above fall rapidly toward the center, where they collide with the core material and “bounce” • The “bounced material collides with the remaining infalling gas, raising temperatures high enough to set ...
... electrons merge into neutrons, taking energy away from the core • The core collapses, and the layers above fall rapidly toward the center, where they collide with the core material and “bounce” • The “bounced material collides with the remaining infalling gas, raising temperatures high enough to set ...
How Is a Star`s Color Related to Its Temperature?
... How Is a Star’s Color Related to Its Temperature? ...
... How Is a Star’s Color Related to Its Temperature? ...
Chapter 1 Starts and Galaxies
... Corona- outermost layer of the sun’s atmosphere Chromosphere- middle layer of the sun’s atmosphere Photosphere- innermost layer of the sun’s atmosphere Core- center of the sun Prominence- violent storm on the sun that can be seen from Earth as a huge bright arch or loop of hot gas Solar flare- storm ...
... Corona- outermost layer of the sun’s atmosphere Chromosphere- middle layer of the sun’s atmosphere Photosphere- innermost layer of the sun’s atmosphere Core- center of the sun Prominence- violent storm on the sun that can be seen from Earth as a huge bright arch or loop of hot gas Solar flare- storm ...
3. Stellar Formation and Evolution
... condition of hydrostatic equilibrium, a protostar forms at the core. • These pre-main sequence stars are often surrounded by a protoplanetary disk (explain later). ...
... condition of hydrostatic equilibrium, a protostar forms at the core. • These pre-main sequence stars are often surrounded by a protoplanetary disk (explain later). ...
Orbital Geometry Notes
... The Solar System • Looking at the Solar System Data table, most of the planets have fairly circular orbits (low eccentricities) with the exception of Mercury. ...
... The Solar System • Looking at the Solar System Data table, most of the planets have fairly circular orbits (low eccentricities) with the exception of Mercury. ...
A - 4
... Epsilon Eridani is surrounded by a dust disk, which might indicate that a Solar System is being formed around this star. Dust disks are much easier to spot than tiny planets, so they are signposts for the presence of planets. The disks also give clues about how planets are formed. ...
... Epsilon Eridani is surrounded by a dust disk, which might indicate that a Solar System is being formed around this star. Dust disks are much easier to spot than tiny planets, so they are signposts for the presence of planets. The disks also give clues about how planets are formed. ...
WEDNESDAY JULY 1
... Separation of 4 forces: gravity, strong nuclear, weak nuclear, electromagnetic ...
... Separation of 4 forces: gravity, strong nuclear, weak nuclear, electromagnetic ...
Chapter 5 - AstroStop
... How many stars are there in the solar system? Only one star, the Sun Was the solar system created as a direct result of the formation of the universe? No. All matter and energy were created by the Big Bang, but the solar system formed billions of years after the Big Bang. How long has the Ea ...
... How many stars are there in the solar system? Only one star, the Sun Was the solar system created as a direct result of the formation of the universe? No. All matter and energy were created by the Big Bang, but the solar system formed billions of years after the Big Bang. How long has the Ea ...