Systematics of Galaxy Properties and Scaling Relations Ay 127
... – Thus, they could be (and are) different for different galaxy families ...
... – Thus, they could be (and are) different for different galaxy families ...
CLASSICAL KUIPER BELT OBJECTS (CKBOs)
... SKBOs form a fat doughnut around the Classical and Resonant KBOs, extending to large distances. 1999 CF119 has an aphelion distance near 200 AU, showing that the SKBO doughnut extends to at least this distance. Eventually, much larger orbits will be found. There is, however, an important bias agains ...
... SKBOs form a fat doughnut around the Classical and Resonant KBOs, extending to large distances. 1999 CF119 has an aphelion distance near 200 AU, showing that the SKBO doughnut extends to at least this distance. Eventually, much larger orbits will be found. There is, however, an important bias agains ...
Plotting Supernova Light Curves
... For stars with masses of more than 15 times the mass of the Sun, their lives end in a violent explosion called a supernova. Nuclear fusion stops in the core of the star, which then collapses and bounces back outwards, ejecting most of its matter into space. During this explosion, the star increases ...
... For stars with masses of more than 15 times the mass of the Sun, their lives end in a violent explosion called a supernova. Nuclear fusion stops in the core of the star, which then collapses and bounces back outwards, ejecting most of its matter into space. During this explosion, the star increases ...
Red Giants - Faculty Web Pages
... As we discussed in class, the brightest stars in the sky are not the same as the nearest stars in the sky. Those two groups are not the same! The nearby stars in the sky are mostly dim Type-M stars. The bright stars in the sky, on the other hand, tend to be Type O, B or A stars, with a few Type-M st ...
... As we discussed in class, the brightest stars in the sky are not the same as the nearest stars in the sky. Those two groups are not the same! The nearby stars in the sky are mostly dim Type-M stars. The bright stars in the sky, on the other hand, tend to be Type O, B or A stars, with a few Type-M st ...
Student Exploration Sheet: Growing Plants
... Gizmo Warm-up In the early 1900s, astronomers were able to identify many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. However, astronomers did not yet understand exactly how these characteristics were related. Using the H-R Diagram Gizmo™, you will d ...
... Gizmo Warm-up In the early 1900s, astronomers were able to identify many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. However, astronomers did not yet understand exactly how these characteristics were related. Using the H-R Diagram Gizmo™, you will d ...
Discovery of a candidate inner Oort cloud planetoid
... distance (r) of 90.32±0.02, a semimajor axis (a) of 480±40AU, an eccentricity e of 0.84±0.01, and an inclination i of 11.927. The object reaches perihelion at a distance of 76 AU on 22 September 2075±260 days. The RMS residuals to the best-fit error are 0.4 arcseconds with a maximum of 0.6 arcsecond ...
... distance (r) of 90.32±0.02, a semimajor axis (a) of 480±40AU, an eccentricity e of 0.84±0.01, and an inclination i of 11.927. The object reaches perihelion at a distance of 76 AU on 22 September 2075±260 days. The RMS residuals to the best-fit error are 0.4 arcseconds with a maximum of 0.6 arcsecond ...
objects in telescope are farther than they appear
... because all have the same Airy Disk radius. However, the star image diameter seen by a telescope user like Galileo depends not just on the Airy Disk radius, but also on factors that set a limit on the intensity of light that can be detected, such sky conditions and the sensitivity of the human eye.1 ...
... because all have the same Airy Disk radius. However, the star image diameter seen by a telescope user like Galileo depends not just on the Airy Disk radius, but also on factors that set a limit on the intensity of light that can be detected, such sky conditions and the sensitivity of the human eye.1 ...
Spectral Variations of Three RV Tauri Stars Donald K. Walter
... preliminary results of our study of the spectral variations of these stars including observations from 2003 to the present. Changes on the order of several spectral types and luminosity classes are observed. We discuss each object’s shift in position on the L vs. T diagram as a function of the phase ...
... preliminary results of our study of the spectral variations of these stars including observations from 2003 to the present. Changes on the order of several spectral types and luminosity classes are observed. We discuss each object’s shift in position on the L vs. T diagram as a function of the phase ...
telescope as time machine - Galaxy Evolution Explorer
... How will scientists know how old the light is that GALEX is receiving? Scientists know that the universe is expanding. Like a chocolate chip cake in the oven, space is the “cake batter” that keeps getting bigger and bigger, while the stars and galaxies are the “chocolate chips” that keep getting far ...
... How will scientists know how old the light is that GALEX is receiving? Scientists know that the universe is expanding. Like a chocolate chip cake in the oven, space is the “cake batter” that keeps getting bigger and bigger, while the stars and galaxies are the “chocolate chips” that keep getting far ...
PHYSICS – Astrophysics Section I
... of the Moon. Galileo saw that the Moon was not perfect and unchanging as was the prevailing Aristotelian view, but in fact had a very rough surface. He observed the “seas” and mountains on the surface of the Moon as well as craters. These observations blatantly contradicted the Church’s Aristotelian ...
... of the Moon. Galileo saw that the Moon was not perfect and unchanging as was the prevailing Aristotelian view, but in fact had a very rough surface. He observed the “seas” and mountains on the surface of the Moon as well as craters. These observations blatantly contradicted the Church’s Aristotelian ...
Understanding Stars
... Astronomy 10, Section 101/106 Worksheet 7 Constructing a Temperature-Luminosity Diagram In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives r ...
... Astronomy 10, Section 101/106 Worksheet 7 Constructing a Temperature-Luminosity Diagram In this exercise, your group will calculate the temperature, luminosity, and radius of a number of stars, and add these values to the temperature-luminosity diagram on the board. The accompanying handout gives r ...
The Properties of Stars Early in its history, the universe organized
... The most obvious differences among the stars in the sky are their apparent brightness. Apparent brightness is determined by how much energy in the form of visible light reaches our eyes per second – the more energy per second, the brighter the star appears. To begin to understand the factors that de ...
... The most obvious differences among the stars in the sky are their apparent brightness. Apparent brightness is determined by how much energy in the form of visible light reaches our eyes per second – the more energy per second, the brighter the star appears. To begin to understand the factors that de ...
chap8 (WP)
... the surface are receding with a Hubble law form for their velocities. There is no "special" position on the balloon's surface: a Hubble law for the velocities will be seen by all observers on the surface. The balloon surface is a two-dimensional situation, and we live in a three-dimensional world. H ...
... the surface are receding with a Hubble law form for their velocities. There is no "special" position on the balloon's surface: a Hubble law for the velocities will be seen by all observers on the surface. The balloon surface is a two-dimensional situation, and we live in a three-dimensional world. H ...
Stars and Galaxies - La Salle Elementary Public Schools No 122
... • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as luminosity. ...
... • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as luminosity. ...
Dynamics of elliptical galaxies
... Could classify ellipticals based on their degree of boxiness / disky-ness - S0s would then be continuation of a trend to increasing disky-ness. ASTR 3830: Spring 2004 ...
... Could classify ellipticals based on their degree of boxiness / disky-ness - S0s would then be continuation of a trend to increasing disky-ness. ASTR 3830: Spring 2004 ...
CS3_Ch 3 - Leon County Schools
... • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as luminosity. ...
... • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as luminosity. ...
August Newsletter
... of the most spectacular and well-known objects in the sky. The centre of our Milky Way galaxy is located in the direction of Sagittarius and because of this Sagittarius contains more deep sky objects than any other constellation. There are no less than 15 Messier objects found in this constellation, ...
... of the most spectacular and well-known objects in the sky. The centre of our Milky Way galaxy is located in the direction of Sagittarius and because of this Sagittarius contains more deep sky objects than any other constellation. There are no less than 15 Messier objects found in this constellation, ...
Lecture02: Astronomical Distance
... One ly is the distance light can travel in one year at a speed of about 3 ×105 km/s or 186,000 miles/s n 1 ly = 9.46 × 1012 km or 63,240 AU Q: What are the distances of planets to the Sun in units of AU ? q Parsec (pc) Q: 1 pc = ? Km = ? ly n the distance at which 1 AU subtends an angle of 1 a ...
... One ly is the distance light can travel in one year at a speed of about 3 ×105 km/s or 186,000 miles/s n 1 ly = 9.46 × 1012 km or 63,240 AU Q: What are the distances of planets to the Sun in units of AU ? q Parsec (pc) Q: 1 pc = ? Km = ? ly n the distance at which 1 AU subtends an angle of 1 a ...
TheSky6 Review - Sierra College Astronomy Home Page
... 10. Filters. Right Click on a star that is not connected to a constellation line. When you do you should get the following menu which includes Display Properties of Star. Select that and this should appear: ...
... 10. Filters. Right Click on a star that is not connected to a constellation line. When you do you should get the following menu which includes Display Properties of Star. Select that and this should appear: ...
Astrophysics
... 02238 USA, Fax: 617 864 6117 It is possible to obtain a 'Sampler Pack' containing one each of the 18 exercises (almost all of which could be adapted/used) and a number of charts and graphs for US$10-95 plus post – which is about as much again! Request the: C0001 ESSCO Sampler Pack (20 charts and 18 ...
... 02238 USA, Fax: 617 864 6117 It is possible to obtain a 'Sampler Pack' containing one each of the 18 exercises (almost all of which could be adapted/used) and a number of charts and graphs for US$10-95 plus post – which is about as much again! Request the: C0001 ESSCO Sampler Pack (20 charts and 18 ...
HD 140283: A Star in the Solar Neighborhood that Formed Shortly
... We made FGS observations of HD 140283 at 11 epochs between 2003 August and 2011 March, at dates close to the biannual times of maximum parallax factor. The FGS are interferometers that, in addition to providing guiding control during imaging or spectroscopic observations, can measure precise positio ...
... We made FGS observations of HD 140283 at 11 epochs between 2003 August and 2011 March, at dates close to the biannual times of maximum parallax factor. The FGS are interferometers that, in addition to providing guiding control during imaging or spectroscopic observations, can measure precise positio ...
Merak
... To the Greeks, this star was named Helike, one of their names to the whole constellation, Ursa Major. According to Burnham, Merak is part of a star cluster including at least 16 other stars from the Ursa Major area of the sky. (http://domeofthesky.com/clicks/merak.html) ...
... To the Greeks, this star was named Helike, one of their names to the whole constellation, Ursa Major. According to Burnham, Merak is part of a star cluster including at least 16 other stars from the Ursa Major area of the sky. (http://domeofthesky.com/clicks/merak.html) ...
A Collection of Curricula for the STARLAB Deep Sky Objects
... All the stars, clusters and nebulae seen in the night sky with the unaided eye are part of the Milky Way Galaxy. (Slides #58 and 59 show photographs of the Milky Way.) The Milky Way is one of many millions (perhaps billions) of galaxies that are part of our universe. Though there are several types o ...
... All the stars, clusters and nebulae seen in the night sky with the unaided eye are part of the Milky Way Galaxy. (Slides #58 and 59 show photographs of the Milky Way.) The Milky Way is one of many millions (perhaps billions) of galaxies that are part of our universe. Though there are several types o ...
HR DIAGRAM (Page 1) - McDonald Observatory
... instance, the faintest stars our eyes alone may see are apparent magnitude 6. A fairly bright star like Sirius is magnitude -1.4, while the sun is a blinding -26. For each single step up or down on the magnitude scale, the brightness changes by a factor of 2.512. And for every five steps, the bright ...
... instance, the faintest stars our eyes alone may see are apparent magnitude 6. A fairly bright star like Sirius is magnitude -1.4, while the sun is a blinding -26. For each single step up or down on the magnitude scale, the brightness changes by a factor of 2.512. And for every five steps, the bright ...
GoSkyWatch User`s Guide
... Tapping on an object will display a panel of detailed information on the object. Tapping the [GoTo] button will move the sky view to that object. In overhead navigation mode an arrow will appear guiding you to the object. Solar System objects. Pluto can be optionally enabled in the preferences. Cons ...
... Tapping on an object will display a panel of detailed information on the object. Tapping the [GoTo] button will move the sky view to that object. In overhead navigation mode an arrow will appear guiding you to the object. Solar System objects. Pluto can be optionally enabled in the preferences. Cons ...
Malmquist bias
The Malmquist bias is an effect in observational astronomy which leads to the preferential detection of intrinsically bright objects. It was first described in 1922 by Swedish astronomer Gunnar Malmquist (1893–1982), who then greatly elaborated upon this work in 1925. In statistics, this bias is referred to as a selection bias and affects the survey results in a brightness limited survey, where stars below a certain apparent brightness are not included. Since observed stars and galaxies appear dimmer when farther away, the brightness that is measured will fall off with distance until their brightness falls below the observational threshold. Objects which are more luminous, or intrinsically brighter, can be observed at a greater distance, creating a false trend of increasing intrinsic brightness, and other related quantities, with distance. This effect has led to many spurious claims in the field of astronomy. Properly correcting for these effects has become an area of great focus.