MAPLE: Reflected Light from Exoplanets with a 50
... than one hundred million years old, to host any kind of life. In mature planetary systems, i.e. greater than one billion years old, such as our Sun and most of the stars in the solar neighbourhood, the systems’ planets barely emit enough thermal light for detection. It is thus impossible to search a ...
... than one hundred million years old, to host any kind of life. In mature planetary systems, i.e. greater than one billion years old, such as our Sun and most of the stars in the solar neighbourhood, the systems’ planets barely emit enough thermal light for detection. It is thus impossible to search a ...
not - ISDC
... ● How can we describe the beginning of the universe? ● What (anti-)particles and elements are abundant in the universe and how did they form? ● What observations led to today’s cosmology? ...
... ● How can we describe the beginning of the universe? ● What (anti-)particles and elements are abundant in the universe and how did they form? ● What observations led to today’s cosmology? ...
AST 207 Test 2 Answers 20 October 2010
... star A. Prof. Adams says he discovered a new type of star that is fainter than white dwarfs. Has he discovered a new type of star? Explain. The clues are very much like Walter Adams’ discovery that Sirius B is a white dwarf. However, there is a crucial missing clue. Since Sirius A and B were known t ...
... star A. Prof. Adams says he discovered a new type of star that is fainter than white dwarfs. Has he discovered a new type of star? Explain. The clues are very much like Walter Adams’ discovery that Sirius B is a white dwarf. However, there is a crucial missing clue. Since Sirius A and B were known t ...
GAIA Composition, Formation and Evolution of our Galaxy
... – e.g. Amors, Apollos and Atens (442: 455: 75 known today) – ~1600 Earth-crossing asteroids > 1 km predicted (100 currently known) – GAIA detection: 260 - 590 m at 1 AU, depending on albedo ...
... – e.g. Amors, Apollos and Atens (442: 455: 75 known today) – ~1600 Earth-crossing asteroids > 1 km predicted (100 currently known) – GAIA detection: 260 - 590 m at 1 AU, depending on albedo ...
Astronomy 350 Fall 2011 Homework #1
... 5. Baseball and the Scale of the Solar System [10 points]. To get a gut feeling for the relative scales of the Solar System, imagine that Dr. Evil creates a diabolical shrink ray which zaps the solar system, reducing the size of everything in it by the same proportion. The new size of the Sun (norm ...
... 5. Baseball and the Scale of the Solar System [10 points]. To get a gut feeling for the relative scales of the Solar System, imagine that Dr. Evil creates a diabolical shrink ray which zaps the solar system, reducing the size of everything in it by the same proportion. The new size of the Sun (norm ...
Answer to question 1 - Northwestern University
... Type II’s are also called WW Virginis stars are found in old star clusters called Globular clusters ...
... Type II’s are also called WW Virginis stars are found in old star clusters called Globular clusters ...
Name: Period: Date: The Celestial Sphere What is the Celestial
... The entire sky appears to rotate once in ________ hours. This is termed the daily or ___________ motion of the celestial sphere, and results from the daily rotation of the earth on its __________. ...
... The entire sky appears to rotate once in ________ hours. This is termed the daily or ___________ motion of the celestial sphere, and results from the daily rotation of the earth on its __________. ...
UNIT VIII/B: THE EARTH IN SPACE – STARS AND GALAXIES
... 3. Understand why light years are used to measure distances in space. a. A light-year is a unit of distance (NOT TIME!!!). It is the distance that light can travel in one year. b. Light moves at a velocity of about 300,000 km each second (in a vacuum). So in one year, it can travel about 10 trillion ...
... 3. Understand why light years are used to measure distances in space. a. A light-year is a unit of distance (NOT TIME!!!). It is the distance that light can travel in one year. b. Light moves at a velocity of about 300,000 km each second (in a vacuum). So in one year, it can travel about 10 trillion ...
Astronomy and Cosmology - spring 2003 - final exam
... A) The Sun rises at its most northerly point on the horizon on this day. B) Both day and night are almost exactly 12 hours long at all locations on the Earth. C) Daylight is longest on this day. D) The Sun passes through an observer's zenith only on this day each year. 20. The star grouping Leo (the ...
... A) The Sun rises at its most northerly point on the horizon on this day. B) Both day and night are almost exactly 12 hours long at all locations on the Earth. C) Daylight is longest on this day. D) The Sun passes through an observer's zenith only on this day each year. 20. The star grouping Leo (the ...
Sept2 - University of Arizona
... Reactions to Copernicus: On March 5, 1616, Copernicus' work was banned from being taught and discussed by the Congregation of the Index "until corrected." It stayed on this list of prohibited books and teachings until 1822. Martin Luther (1483-1546): [Copernicus] “is a fool who wishes to reverse th ...
... Reactions to Copernicus: On March 5, 1616, Copernicus' work was banned from being taught and discussed by the Congregation of the Index "until corrected." It stayed on this list of prohibited books and teachings until 1822. Martin Luther (1483-1546): [Copernicus] “is a fool who wishes to reverse th ...
Solutions: Exploring Blackbody Radiation using the PhET Simulation
... 5. Would a sensor that responds only to infrared be able to detect this EM source? Yes – some energy is emitted at infrared wavelengths (longer than red light) 6. Would a sensor that responds only to ultraviolet be able to detect this EM source? Yes – some energy is emitted at ultraviolet wavelength ...
... 5. Would a sensor that responds only to infrared be able to detect this EM source? Yes – some energy is emitted at infrared wavelengths (longer than red light) 6. Would a sensor that responds only to ultraviolet be able to detect this EM source? Yes – some energy is emitted at ultraviolet wavelength ...
PDF introduction
... we owe to Rosse the visual discovery of the spiral structure of several galaxies. William Lassell, a merchant who retired and sought better observing conditions by moving to the island of Malta for three years, constructed the last successful large telescope with a bronze mirror, which he mounted on ...
... we owe to Rosse the visual discovery of the spiral structure of several galaxies. William Lassell, a merchant who retired and sought better observing conditions by moving to the island of Malta for three years, constructed the last successful large telescope with a bronze mirror, which he mounted on ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... (a) regions in the interstellar medium comprised of twice-ionised hydrogen. (b) regions in the interstellar medium comprised of molecular hydrogen. (c) regions in the interstellar medium detected by the observing the 21 cm (1420 MHz) radio signal. (d) emission nebulae in which hydrogen is ionised by ...
... (a) regions in the interstellar medium comprised of twice-ionised hydrogen. (b) regions in the interstellar medium comprised of molecular hydrogen. (c) regions in the interstellar medium detected by the observing the 21 cm (1420 MHz) radio signal. (d) emission nebulae in which hydrogen is ionised by ...
WORD - UWL faculty websites
... 5. Would a sensor that responds only to infrared be able to detect this EM source? Yes – some energy is emitted at infrared wavelengths (longer than red light) 6. Would a sensor that responds only to ultraviolet be able to detect this EM source? Yes – some energy is emitted at ultraviolet wavelength ...
... 5. Would a sensor that responds only to infrared be able to detect this EM source? Yes – some energy is emitted at infrared wavelengths (longer than red light) 6. Would a sensor that responds only to ultraviolet be able to detect this EM source? Yes – some energy is emitted at ultraviolet wavelength ...
Gresham Lecture, Wednesday 15 December 2010 Unsolved
... only matter. So far, physicists have not been able to identify the exact mechanism that would produce this apparent "asymmetry", or difference, between matter and antimatter to explain why there arose this tiny excess of matter over antimatter. Today, antimatter is created primarily by cosmic rays ...
... only matter. So far, physicists have not been able to identify the exact mechanism that would produce this apparent "asymmetry", or difference, between matter and antimatter to explain why there arose this tiny excess of matter over antimatter. Today, antimatter is created primarily by cosmic rays ...
Motion in the Sky & Getting to know the Sky
... See Mathematical Insight 4.3 on page 137 where the mass of the sun is calculated using the earth’s orbit. Warning! Book Typo! The period of the earth’s orbit is 1 year = 3.15x107 seconds. ...
... See Mathematical Insight 4.3 on page 137 where the mass of the sun is calculated using the earth’s orbit. Warning! Book Typo! The period of the earth’s orbit is 1 year = 3.15x107 seconds. ...
universe
... Some galaxies look much smaller and fainter than others, showing they may be much further away. The Andromeda galaxy is 2.3 million light years away. That is, we are seeing it as it was 2.3 million years ago. In recent decades, astronomers have detected galaxies located several billion light years a ...
... Some galaxies look much smaller and fainter than others, showing they may be much further away. The Andromeda galaxy is 2.3 million light years away. That is, we are seeing it as it was 2.3 million years ago. In recent decades, astronomers have detected galaxies located several billion light years a ...
the life cycle of stars
... • WHITE DWARF – a small, hot, dim star that is the leftover center of an old star • No hydrogen left • Can shine for billions of years before they cool completely • RED DWARF – low-mass stars • Oldest stars in the universe ...
... • WHITE DWARF – a small, hot, dim star that is the leftover center of an old star • No hydrogen left • Can shine for billions of years before they cool completely • RED DWARF – low-mass stars • Oldest stars in the universe ...
Chapter 25 Beyond Our Solar System
... due to the orbital motion of Earth. Parallax is the most basic way to measure star distance. • The light-year is the distance light travels in one year—about 9.5 trillion kilometers. Three factors control the apparent brightness of a star as seen from Earth: how big it is, how hot it is, and how far ...
... due to the orbital motion of Earth. Parallax is the most basic way to measure star distance. • The light-year is the distance light travels in one year—about 9.5 trillion kilometers. Three factors control the apparent brightness of a star as seen from Earth: how big it is, how hot it is, and how far ...
cocoon - Adams State University
... B) The universe was much hotter in the first billion years, so the gas clouds had to be more massive to overcome the warmer temperature. C) Hydrogen can’t radiate away heat below about 100 K, so the gas clouds had to be more massive to overcome the warmer temperature. D) The heavier elements availab ...
... B) The universe was much hotter in the first billion years, so the gas clouds had to be more massive to overcome the warmer temperature. C) Hydrogen can’t radiate away heat below about 100 K, so the gas clouds had to be more massive to overcome the warmer temperature. D) The heavier elements availab ...
Related Handout - Orange County Astronomers
... When looking at the night sky with a telescope, we see from a few dozen to a few hundred of stars no matter where the scope is pointing to. Certain areas, however, contain accumulations of stars that appear to fill the ski as diamonds on a black velvet background. These accumulations are called star ...
... When looking at the night sky with a telescope, we see from a few dozen to a few hundred of stars no matter where the scope is pointing to. Certain areas, however, contain accumulations of stars that appear to fill the ski as diamonds on a black velvet background. These accumulations are called star ...
Astronomical e-Science in Edinburgh Introduction: astronomy and e-science Sky Survey Science Archives
... spatial and temporal data (with confidence intervals), [generated by] many different instruments from many different places and many different times. There is a lot of it.” The principal e-science initiative within astronomy is the creation of an international Virtual Observatory (VO), which will fe ...
... spatial and temporal data (with confidence intervals), [generated by] many different instruments from many different places and many different times. There is a lot of it.” The principal e-science initiative within astronomy is the creation of an international Virtual Observatory (VO), which will fe ...
EM review
... Measuring the brightness of stars (and NEAS) The observed brightness of a star is given by its apparent magnitude. (First devised by Hipparchus who made a catalogue of about 850) The brightest stars: m=1. Dimmest stars (visible to the naked eye) m=6. The magnitude scale has been shown to be loga ...
... Measuring the brightness of stars (and NEAS) The observed brightness of a star is given by its apparent magnitude. (First devised by Hipparchus who made a catalogue of about 850) The brightest stars: m=1. Dimmest stars (visible to the naked eye) m=6. The magnitude scale has been shown to be loga ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.