![Stars and telescopes](http://s1.studyres.com/store/data/008083877_1-586f89d61f842bc5140a214db7d8ec17-300x300.png)
Stars and telescopes
... Radio Telescopes • Operate in the radio frequency portion of the EM spectrum where they can detect and collect data on radio sources. • Used anytime, no light pollution or weather problems ...
... Radio Telescopes • Operate in the radio frequency portion of the EM spectrum where they can detect and collect data on radio sources. • Used anytime, no light pollution or weather problems ...
The Hubble Deep Field (HDF)
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
The Hubble Deep Field (HDF)
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
The life of Stars
... • Mira (=wonderful, lat.) [o Ceti]: sometimes visible with bare eye, sometimes faint • Long period variable star: 332 days period ...
... • Mira (=wonderful, lat.) [o Ceti]: sometimes visible with bare eye, sometimes faint • Long period variable star: 332 days period ...
Question C:
... We can find the absolute magnitude MV at B-4=0.4 from a couple of places: • Table A4-3 says that MV≈3.5 • The HR diagram used with the Hoff exercise on Distance to the Pleiades says MV≈4 • Fig. 13-15 implies that MV≈4 for Main Sequence stars We therefore have a distance modulus ...
... We can find the absolute magnitude MV at B-4=0.4 from a couple of places: • Table A4-3 says that MV≈3.5 • The HR diagram used with the Hoff exercise on Distance to the Pleiades says MV≈4 • Fig. 13-15 implies that MV≈4 for Main Sequence stars We therefore have a distance modulus ...
Gemini
... Catalogue 2000.0 and the first edition of Uranometria 2000.0 give 200 members, the second edition of Uranometria 2000.0 gives 434, while Cudworth (1971) counted 513 probable member stars. At its distance of 2,700 (WEBDA) or 2,800 light years (Sky Catalogue 2000.0), this corresponds to a linear diame ...
... Catalogue 2000.0 and the first edition of Uranometria 2000.0 give 200 members, the second edition of Uranometria 2000.0 gives 434, while Cudworth (1971) counted 513 probable member stars. At its distance of 2,700 (WEBDA) or 2,800 light years (Sky Catalogue 2000.0), this corresponds to a linear diame ...
The Milky Way – A Classic Galaxy
... light variation to show them as Cepheids • Therefore, this was not a nearby nebula around a new star, it was an entire galaxy. • Herschel’s map then could be seen as a map of our own Milky Way Galaxy ...
... light variation to show them as Cepheids • Therefore, this was not a nearby nebula around a new star, it was an entire galaxy. • Herschel’s map then could be seen as a map of our own Milky Way Galaxy ...
GLY 1001 Earth Science Name:__Answers
... Degenerate matter Elliptical galaxy – A galaxy that is round or elliptical in outline. It contains little gas and dust, no disk, or spiral arms, and few, hot bright stars. Emission nebula – A gaseous nebula that derives its visible light from the fluorescence of ultraviolet light from a star in or n ...
... Degenerate matter Elliptical galaxy – A galaxy that is round or elliptical in outline. It contains little gas and dust, no disk, or spiral arms, and few, hot bright stars. Emission nebula – A gaseous nebula that derives its visible light from the fluorescence of ultraviolet light from a star in or n ...
ParalStellarDist.V2doc
... parallax for determining the distances to stars. As the Earth moves around the Sun in its annual motion, nearby stars appear to move relative to the background of more distant stars (see the figure below). ...
... parallax for determining the distances to stars. As the Earth moves around the Sun in its annual motion, nearby stars appear to move relative to the background of more distant stars (see the figure below). ...
Scientific method, night sky, parallax, angular size
... falsifiable) and predictive. They address how questions (e.g. How do stars form? How is a lunar eclipse caused? How did the Universe evolve?) • Religious and ethical statements are (generally) not verifiable. They address why questions (e.g. Why does the Universe exist? What kind of life is worth li ...
... falsifiable) and predictive. They address how questions (e.g. How do stars form? How is a lunar eclipse caused? How did the Universe evolve?) • Religious and ethical statements are (generally) not verifiable. They address why questions (e.g. Why does the Universe exist? What kind of life is worth li ...
Integrative Studies 410 Our Place in the Universe
... Stars nebulae molecular clouds star clusters ...
... Stars nebulae molecular clouds star clusters ...
Astronomy - The-A-List
... planet to the Sun sweeps equal areas in equal times Kepler’s Third Law: The square of a planet’s sidereal period (P) around the Sun is directly proportional to the cube of the length of its orbit’s semimajor axis (a) P2 = a3, planet closer to the Sun has a shorter year ...
... planet to the Sun sweeps equal areas in equal times Kepler’s Third Law: The square of a planet’s sidereal period (P) around the Sun is directly proportional to the cube of the length of its orbit’s semimajor axis (a) P2 = a3, planet closer to the Sun has a shorter year ...
Astronomical Distances
... This gives us a means to measure distances directly by measuring the parallaxes of nearby stars. We call this powerful direct distance technique the Method of Trigonometric Parallaxes. Stellar Parallaxes Because even the nearest stars are very far away, the largest measured parallaxes is very small; ...
... This gives us a means to measure distances directly by measuring the parallaxes of nearby stars. We call this powerful direct distance technique the Method of Trigonometric Parallaxes. Stellar Parallaxes Because even the nearest stars are very far away, the largest measured parallaxes is very small; ...
STUDY GUIDE FOR CHAPTER 1
... 1. Which direction does temperature increase in? Luminosity? 2. What can we plot instead of temperature? Instead of luminosity? B. Different types of stars are in different regions. You should know what types they are and what regions of the H-R diagram they are found in. 1. Where are the supergiant ...
... 1. Which direction does temperature increase in? Luminosity? 2. What can we plot instead of temperature? Instead of luminosity? B. Different types of stars are in different regions. You should know what types they are and what regions of the H-R diagram they are found in. 1. Where are the supergiant ...
10 September: Faint Stars and Bright Stars
... Absolute Magnitude: a measure of the intrinsic brilliance of a star • Pick a star (any star) • Imagine moving it to a distance of 10 parsecs • The apparent magnitude it would have is its absolute magnitude • The absolute magnitude is a distanceindependent quantity • Look at Appendix 12 and Appendix ...
... Absolute Magnitude: a measure of the intrinsic brilliance of a star • Pick a star (any star) • Imagine moving it to a distance of 10 parsecs • The apparent magnitude it would have is its absolute magnitude • The absolute magnitude is a distanceindependent quantity • Look at Appendix 12 and Appendix ...
Bright stars and faint stars: the stellar magnitude system Magnitudes
... Absolute Magnitude: a measure of the intrinsic brilliance of a star • Pick a star (any star) • Imagine moving it to a distance of 10 parsecs • The apparent magnitude it would have is its absolute magnitude • The absolute magnitude is a distanceindependent quantity • Look at Appendix 12 and Appendix ...
... Absolute Magnitude: a measure of the intrinsic brilliance of a star • Pick a star (any star) • Imagine moving it to a distance of 10 parsecs • The apparent magnitude it would have is its absolute magnitude • The absolute magnitude is a distanceindependent quantity • Look at Appendix 12 and Appendix ...
Summary of week 1:
... Galaxies (The Milky Way) A large (typically 5000-200,000 ly) gravitationally-bound system of hundreds of millions (or up to a trillion) of stars. The Milky Way is about 100,000 light years across and has over 100 billion stars. Clusters of Galaxies (The Local Group) Superclusters of galaxies (The Vi ...
... Galaxies (The Milky Way) A large (typically 5000-200,000 ly) gravitationally-bound system of hundreds of millions (or up to a trillion) of stars. The Milky Way is about 100,000 light years across and has over 100 billion stars. Clusters of Galaxies (The Local Group) Superclusters of galaxies (The Vi ...
7.1 Space Flight to the Stars
... -Eventually, stars explode. They have life spans just as humans do. When a star explodes, it is called a supernova! Some stars can live for millions or even billions of years and suddenly explode in a matter of minutes. This is caused by a gradual buildup of heavy ...
... -Eventually, stars explode. They have life spans just as humans do. When a star explodes, it is called a supernova! Some stars can live for millions or even billions of years and suddenly explode in a matter of minutes. This is caused by a gradual buildup of heavy ...
Lecture 6: Properties of Stars The Constellations The Constellations
... o Stellar distances are measured using parallax. o Distant stars used as reference points. Closer star appears to move relative to distant stars during Earth’s orbit about Sun. o Parallax angle: p ~ 1 AU / d => d = ~ 1 AU / p ...
... o Stellar distances are measured using parallax. o Distant stars used as reference points. Closer star appears to move relative to distant stars during Earth’s orbit about Sun. o Parallax angle: p ~ 1 AU / d => d = ~ 1 AU / p ...
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 ...
Astronomical Unit (AU)
... by scientific evidence. • Theory statements can be refuted, but not verified, no matter how strongly we believe in the truth of a theory. It is always possible for it to be falsified. ...
... by scientific evidence. • Theory statements can be refuted, but not verified, no matter how strongly we believe in the truth of a theory. It is always possible for it to be falsified. ...
Space Science Distance Definitions
... Earth. In general, the effects of absorption and scattering by dust and gas in the ISM result in the light from the star appearing fainter and redder. The reddening is caused by the fact that particles whose size is similar to that of the electromagnetic radiation that interacts with them preferenti ...
... Earth. In general, the effects of absorption and scattering by dust and gas in the ISM result in the light from the star appearing fainter and redder. The reddening is caused by the fact that particles whose size is similar to that of the electromagnetic radiation that interacts with them preferenti ...
General Astronomy - Stockton University
... Even though the Sun is much larger than the moon the distances are such that they subtend nearly the same angle. ...
... Even though the Sun is much larger than the moon the distances are such that they subtend nearly the same angle. ...
Stars and Galaxies Section 1 Stars
... 4. Circumpolar constellations in the northern sky appear to circle around Polaris and are visible all year B. Star magnitude 1. Absolute magnitude—measure of the amount of light a star actually gives off 2. Apparent magnitude—measure of the amount of a star’s light received on Earth C. Space measure ...
... 4. Circumpolar constellations in the northern sky appear to circle around Polaris and are visible all year B. Star magnitude 1. Absolute magnitude—measure of the amount of light a star actually gives off 2. Apparent magnitude—measure of the amount of a star’s light received on Earth C. Space measure ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.