Evan_Skillman_1
... cores are no longer on the main sequence. • All stars become larger and redder after exhausting their core hydrogen: giants and ...
... cores are no longer on the main sequence. • All stars become larger and redder after exhausting their core hydrogen: giants and ...
Stella Finger Prints
... Analyze and predict trends from data. Background: Now that you know how astronomers use light to collect information from the universe, let’s look at stars by themselves. All stars start out in a specific place, called a nebula (plural is nebulae). Nebulae are large areas of gas and dust where sta ...
... Analyze and predict trends from data. Background: Now that you know how astronomers use light to collect information from the universe, let’s look at stars by themselves. All stars start out in a specific place, called a nebula (plural is nebulae). Nebulae are large areas of gas and dust where sta ...
Infrared - World of Teaching
... Infrared Telescopes • Infrared telescopes work much like visible light telescopes • Light hits parabolic mirror • Light is sent to focal point • Light is recorded by computer and translated into visible light ...
... Infrared Telescopes • Infrared telescopes work much like visible light telescopes • Light hits parabolic mirror • Light is sent to focal point • Light is recorded by computer and translated into visible light ...
April, 2004 Observer - Fort Bend Astronomy Club
... purchased equipment towards the sky and immediately see the bright galaxies, spiral arms and other objects which the marketing literature would have us believe should immediately pop into view. So to begin this series of articles we are going to look at the different types of telescopes which are av ...
... purchased equipment towards the sky and immediately see the bright galaxies, spiral arms and other objects which the marketing literature would have us believe should immediately pop into view. So to begin this series of articles we are going to look at the different types of telescopes which are av ...
How Big is the Universe
... the sky than are visible to the naked eye. Later, astronomers learned they were part of the Milky Way Galaxy. They also observed many fuzzy, cloudy looking patches. They were called nebulae. This is the Latin word for clouds. Some of them appeared to be giant clouds of gas and dust inside the Milky ...
... the sky than are visible to the naked eye. Later, astronomers learned they were part of the Milky Way Galaxy. They also observed many fuzzy, cloudy looking patches. They were called nebulae. This is the Latin word for clouds. Some of them appeared to be giant clouds of gas and dust inside the Milky ...
If you wish to a copy of this months Night Sky News
... Castor B is now also known to be a spectroscopic binary whose components are even closer, at only 4.5 million km distance and having an orbital period of only three days. A distant 9th mag. companion star was also discovered 150 billion km (1000 AU) distant from the A-B pair. It was also detected as ...
... Castor B is now also known to be a spectroscopic binary whose components are even closer, at only 4.5 million km distance and having an orbital period of only three days. A distant 9th mag. companion star was also discovered 150 billion km (1000 AU) distant from the A-B pair. It was also detected as ...
A rocky planet transiting a nearby low-mass star
... Venus-like Bond albedo of 0.75), GJ"1132b may have retained a substantial atmosphere. At these temperatures, the average thermal speeds of atoms or molecules heavier than helium are less than one-eighth of the escape velocity, suggesting an atmosphere potentially stable against thermal escape. This ...
... Venus-like Bond albedo of 0.75), GJ"1132b may have retained a substantial atmosphere. At these temperatures, the average thermal speeds of atoms or molecules heavier than helium are less than one-eighth of the escape velocity, suggesting an atmosphere potentially stable against thermal escape. This ...
Nebulae - Innovative Teachers BG
... populated with relatively young hot stars. Interestingly here is that astronomers have observed two different disc-like objects - one of them located near the brightest stars in the cluster, and others not associated with visible stars. In the first case the star heats the gas and we observe a disc- ...
... populated with relatively young hot stars. Interestingly here is that astronomers have observed two different disc-like objects - one of them located near the brightest stars in the cluster, and others not associated with visible stars. In the first case the star heats the gas and we observe a disc- ...
Astronomy 162 Lab 4: Stars
... properties you are actually trying to compare. Observational Astronomers tend to use an HR Diagram that plots Spectral Class (which is directly related to temperature) on the x-axis against Absolute Magnitude on the y-axis. From this diagram, astronomers can study the relationship between temperatu ...
... properties you are actually trying to compare. Observational Astronomers tend to use an HR Diagram that plots Spectral Class (which is directly related to temperature) on the x-axis against Absolute Magnitude on the y-axis. From this diagram, astronomers can study the relationship between temperatu ...
Resolving the night sky with SPIRIT
... The focal length (f) of a telescope is the distance to the point (F) where light rays from an object are brought to focus after hitting the primary mirror or lens. It is determined by the design and size of the telescope’s optics. In general, telescopes with long focal length provide a more magnifie ...
... The focal length (f) of a telescope is the distance to the point (F) where light rays from an object are brought to focus after hitting the primary mirror or lens. It is determined by the design and size of the telescope’s optics. In general, telescopes with long focal length provide a more magnifie ...
Ch9CTa
... There is no gravity here and since nothing is touching the pen, there is no force on it (I am ignoring the small drag force due to the air in the centrifuge.). Before the pen is released, it is moving (along with astronaut's hand) with a tangential velocity. When the pen is released, it continues wi ...
... There is no gravity here and since nothing is touching the pen, there is no force on it (I am ignoring the small drag force due to the air in the centrifuge.). Before the pen is released, it is moving (along with astronaut's hand) with a tangential velocity. When the pen is released, it continues wi ...
chapter01 - California State University, Long Beach
... 7. This problem is a modern version of the method Eratosthenes used to measure the size of the Earth. Given that the shadow length is 15 degrees, the distance in latitude between the two points on the asteroid must be 15 degrees, or 15/360 = 1/24 th the circumference of the asteroid. If the 15 degre ...
... 7. This problem is a modern version of the method Eratosthenes used to measure the size of the Earth. Given that the shadow length is 15 degrees, the distance in latitude between the two points on the asteroid must be 15 degrees, or 15/360 = 1/24 th the circumference of the asteroid. If the 15 degre ...
2. Astronomers` Tools - Lawrencehallofscience
... two telescopes, each with a 10 meter diameter primary mirror to collect light. The mirrors are each made of 36 hexagonal segments, each 1.8 meters wide. Courtesy W. M. Keck Observatory. ...
... two telescopes, each with a 10 meter diameter primary mirror to collect light. The mirrors are each made of 36 hexagonal segments, each 1.8 meters wide. Courtesy W. M. Keck Observatory. ...
May 2009 Tz 2
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
Lecture 10 - University of Minnesota
... shows how the minimum mass of a star forming cloud varies with density. Following these examples (especially the ones on page 533), figure out how dense the could would have to be to form a single, 1 solar mass star. What does this say about why stars usually form in clusters? ...
... shows how the minimum mass of a star forming cloud varies with density. Following these examples (especially the ones on page 533), figure out how dense the could would have to be to form a single, 1 solar mass star. What does this say about why stars usually form in clusters? ...
Probing the Atmospheres of Exoplanets
... external solar systems has been truly remarkable. (Note: both “exoplanet” and “extrasolar planet” are used interchangeably in this article.) By early 2009, more than 340 planets had been found orbiting other stars—almost all of them discovered indirectly by ground-based telescopes as a result of the ...
... external solar systems has been truly remarkable. (Note: both “exoplanet” and “extrasolar planet” are used interchangeably in this article.) By early 2009, more than 340 planets had been found orbiting other stars—almost all of them discovered indirectly by ground-based telescopes as a result of the ...
Fingerprints-in-Sunlight
... radiates/emits energy, i.e. light Sun & stars emit a continuous spectrum (“black body”) of EM radiation Our eyes see “white” light, which is made of a spectrum of colors, visible in a rainbow Spectrum = “The distribution of energy emitted by a radiant source, e.g. the Sun, arranged in order of wavel ...
... radiates/emits energy, i.e. light Sun & stars emit a continuous spectrum (“black body”) of EM radiation Our eyes see “white” light, which is made of a spectrum of colors, visible in a rainbow Spectrum = “The distribution of energy emitted by a radiant source, e.g. the Sun, arranged in order of wavel ...
Events: - Temecula Valley Astronomers
... As the sun sets, I try to point out the first stars visible - usually the summer triangle. I talk about constellations and asterisms. Once the sky is dark, our first targets are man-made satellites. Many web sites and cell phone apps help you find what is visible. While we are waiting for them to co ...
... As the sun sets, I try to point out the first stars visible - usually the summer triangle. I talk about constellations and asterisms. Once the sky is dark, our first targets are man-made satellites. Many web sites and cell phone apps help you find what is visible. While we are waiting for them to co ...
The cosmological distance ladder
... A typical Type Ia supernova at maximum light is 4 billion times brighter than the Sun. As a result, such an object can be detected halfway across the observable universe, further than 8 billion light-years away. ...
... A typical Type Ia supernova at maximum light is 4 billion times brighter than the Sun. As a result, such an object can be detected halfway across the observable universe, further than 8 billion light-years away. ...
The Helix Nebula • NGC 7293
... rim of the nebula points back toward the central, dying star, a small but super-hot white dwarf that seems to float in a sea of blue gas [white dot in center of nebula]. These tentacles, which superficially resemble comets, formed when a hot “stellar wind” of particles plowed into colder shells of d ...
... rim of the nebula points back toward the central, dying star, a small but super-hot white dwarf that seems to float in a sea of blue gas [white dot in center of nebula]. These tentacles, which superficially resemble comets, formed when a hot “stellar wind” of particles plowed into colder shells of d ...
AST 1010 Quiz questions
... 1. Explain why the Moon goes through a series of phases. Be sure to include a description of how the relative positions of the Sun, Moon and Earth affect this process. 2. Explain why most locations on the Earth experience a cycle of seasons. Be sure to be specific as to which hemisphere you are desc ...
... 1. Explain why the Moon goes through a series of phases. Be sure to include a description of how the relative positions of the Sun, Moon and Earth affect this process. 2. Explain why most locations on the Earth experience a cycle of seasons. Be sure to be specific as to which hemisphere you are desc ...
Announcements Evolution of High-Mass Stars: Red Supergiants
... • To map the Milky Way Galaxy, we need to measure distances to stars. • Parallax only works for nearby stars (within about 1000 light years) • For more distant stars, we use Standard Candles Car Headlights are standard candles: We use them to determine the car’s distance ...
... • To map the Milky Way Galaxy, we need to measure distances to stars. • Parallax only works for nearby stars (within about 1000 light years) • For more distant stars, we use Standard Candles Car Headlights are standard candles: We use them to determine the car’s distance ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... times smaller than the 3 km radius we heard about for the Sun. This is not surprising, because 3.74 × 10−8 is about 1/30 million. . . i.e. the Moon is one thirty-millionth the mass of the Sun, so the size of a Moon mass black hole is one thirty-millionth the size of a Sun mass black hole. (b) None! ...
... times smaller than the 3 km radius we heard about for the Sun. This is not surprising, because 3.74 × 10−8 is about 1/30 million. . . i.e. the Moon is one thirty-millionth the mass of the Sun, so the size of a Moon mass black hole is one thirty-millionth the size of a Sun mass black hole. (b) None! ...
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.