distance
... Measuring the Hubble Law Slope: Distances to Galaxies • Distance measurements that work to other galaxies: Cepheids — BRIGHT! Can see them out to ~40 Mpc ...
... Measuring the Hubble Law Slope: Distances to Galaxies • Distance measurements that work to other galaxies: Cepheids — BRIGHT! Can see them out to ~40 Mpc ...
PDF - Department of Statistics
... in variability among stars of differing magnitudes. All Yksh should then have approximately equal first and second moments. If the flux distributions were Gaussian, for example, the distributions of the standardized statistics would all be identical. The time dedicated to collecting the preliminary ...
... in variability among stars of differing magnitudes. All Yksh should then have approximately equal first and second moments. If the flux distributions were Gaussian, for example, the distributions of the standardized statistics would all be identical. The time dedicated to collecting the preliminary ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... the Texas Supernova Search revealed that they actually were incredibly distant supernovae—ones dating from beyond a redshift of z = 1, that is, more than halfway back to the Big Bang. The mysterious lines in the visible spectra were actually ultraviolet emission redshifted—their short UV wavelengths ...
... the Texas Supernova Search revealed that they actually were incredibly distant supernovae—ones dating from beyond a redshift of z = 1, that is, more than halfway back to the Big Bang. The mysterious lines in the visible spectra were actually ultraviolet emission redshifted—their short UV wavelengths ...
PowerPoint Presentation - 16. Properties of Stars
... • What is the most important property of a star? • A star’s most important property is its mass, which determines its luminosity and spectral type at each stage of its life. • What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see disti ...
... • What is the most important property of a star? • A star’s most important property is its mass, which determines its luminosity and spectral type at each stage of its life. • What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see disti ...
Tasks - ESA Science
... the surface repeatedly during this late stage of a low-mass star’s life, thereby enriching the outer envelope with elements other than hydrogen, in a process called dredge-up. The envelope is finally ejected out into space, sometimes in a spherical shell, but often in an asymmetrical shape, creating ...
... the surface repeatedly during this late stage of a low-mass star’s life, thereby enriching the outer envelope with elements other than hydrogen, in a process called dredge-up. The envelope is finally ejected out into space, sometimes in a spherical shell, but often in an asymmetrical shape, creating ...
SRMP Stars Curriculum - American Museum of Natural History
... Session Three: Magnitudes and Wein’s Law (continued) ...
... Session Three: Magnitudes and Wein’s Law (continued) ...
KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN
... positions of stars in Galactic coordinates, and noted that many of these velocity-selected giant stars with metallicities between −2.8 < [Fe/H] < −1.8 are concentrated in a small fraction of a single SDSS spectroscopic plate centered at l = 136◦ and b = −35◦ (see Figure 2). Figure 2 was produced usi ...
... positions of stars in Galactic coordinates, and noted that many of these velocity-selected giant stars with metallicities between −2.8 < [Fe/H] < −1.8 are concentrated in a small fraction of a single SDSS spectroscopic plate centered at l = 136◦ and b = −35◦ (see Figure 2). Figure 2 was produced usi ...
MillionaireGame__Science_Review
... A NEBULA is a huge cloud of gases and dust, and are scattered throughout many regions of space. ...
... A NEBULA is a huge cloud of gases and dust, and are scattered throughout many regions of space. ...
M13/4/PHYSI/SP3/ENG/TZ1/XX Tuesday 7 May
... Newton suggested that the universe is infinite, uniform and static. For each of Newton’s three suggestions, outline one piece of current astronomical evidence that contradicts the suggestion. ...
... Newton suggested that the universe is infinite, uniform and static. For each of Newton’s three suggestions, outline one piece of current astronomical evidence that contradicts the suggestion. ...
Galactic Archaeology: Current Surveys
... clump stars. The surveys also differ in which phase-space coordinates can be studied: 2D or 3D spatial coordinates, 1D or 3D kinematics, overall metallicity or detailed elemental abundances. Ideally the survey would be capable of analyzing the sample in as many properties as possible. The quality an ...
... clump stars. The surveys also differ in which phase-space coordinates can be studied: 2D or 3D spatial coordinates, 1D or 3D kinematics, overall metallicity or detailed elemental abundances. Ideally the survey would be capable of analyzing the sample in as many properties as possible. The quality an ...
Quiz 2 Lecture 12
... a. Ring galaxies can be produced by head-on collisions between galaxies. b. The ratio of the number of elliptical to spiral galaxies remains constant over time. c. The Magellanic Clouds may eventually be "cannibalized" by our Galaxy. d. The shape of a galaxy can be influenced by collision with anoth ...
... a. Ring galaxies can be produced by head-on collisions between galaxies. b. The ratio of the number of elliptical to spiral galaxies remains constant over time. c. The Magellanic Clouds may eventually be "cannibalized" by our Galaxy. d. The shape of a galaxy can be influenced by collision with anoth ...
Lecture 3 - University of Washington
... This all (i.e. exp. profile and Freeman’s law) applies to disks of spiral galaxies. What about (luminous) halo? The answer depends on tracer; for the Milky Way ...
... This all (i.e. exp. profile and Freeman’s law) applies to disks of spiral galaxies. What about (luminous) halo? The answer depends on tracer; for the Milky Way ...
Surface reflectance properties of distant Solar system bodies
... filters. Images of the standard fields SAlOl, SA107 and SA110 (Landolt 1992) were measured through both B and R filters on both nights, allowing subsequent magnitudes in the Kitt Peak system to be derived. The observing conditions were photometric throughout the observing run, thus enabling absolute ...
... filters. Images of the standard fields SAlOl, SA107 and SA110 (Landolt 1992) were measured through both B and R filters on both nights, allowing subsequent magnitudes in the Kitt Peak system to be derived. The observing conditions were photometric throughout the observing run, thus enabling absolute ...
Chapter 13 Measuring the properties of stars
... The amount of energy emitted by a star each second is the ____ and is measured in ____. A. Apparent brightness; degrees K B. Temperature; degrees K C. Apparent brightness; Watts D. Luminosity; Watts ...
... The amount of energy emitted by a star each second is the ____ and is measured in ____. A. Apparent brightness; degrees K B. Temperature; degrees K C. Apparent brightness; Watts D. Luminosity; Watts ...
Teacher`s Guide - Cornell Science Inquiry Partnerships
... to learn about the properties of stars and also make a connection between astronomical techniques and practical, down-to-earth applications. In the standard high school earth science or astronomy curriculum, the only exposure that students have to graphing properties of stars is to learn about the H ...
... to learn about the properties of stars and also make a connection between astronomical techniques and practical, down-to-earth applications. In the standard high school earth science or astronomy curriculum, the only exposure that students have to graphing properties of stars is to learn about the H ...
Here - Astrophysics Research Institute
... • If a northern hemisphere star’s small circle does not intersect the observer’s horizon, the star never SETS and the star is said to be circumpolar • If a southern hemisphere star’s small circle does not intersect the observer’s horizon, the star never RISES ...
... • If a northern hemisphere star’s small circle does not intersect the observer’s horizon, the star never SETS and the star is said to be circumpolar • If a southern hemisphere star’s small circle does not intersect the observer’s horizon, the star never RISES ...
Constellation Classification Cards*
... 5. Ask the students from each constellation to identify themselves. As in the U-shaped model in Activity #1, the model should begin with the Sun and Sirius and end with Aludra from the constellation Canis Major. 6. Ask the students to consult their cards to find their brightness. A “0” on the brigh ...
... 5. Ask the students from each constellation to identify themselves. As in the U-shaped model in Activity #1, the model should begin with the Sun and Sirius and end with Aludra from the constellation Canis Major. 6. Ask the students to consult their cards to find their brightness. A “0” on the brigh ...
Document
... Cimatti et al. 2006 A&A 453, L29 -- same conclusion, a factor of two growth in the red sequence, and no growth for the massive systems. Brown et al. 2006 astro-ph 0609584 -- NOAO and Spitzer IRAC survey: “…the stellar mass contained within the red galaxy population has roughly doubled over the past ...
... Cimatti et al. 2006 A&A 453, L29 -- same conclusion, a factor of two growth in the red sequence, and no growth for the massive systems. Brown et al. 2006 astro-ph 0609584 -- NOAO and Spitzer IRAC survey: “…the stellar mass contained within the red galaxy population has roughly doubled over the past ...
flare swg usa
... The large red circles denote our stepwise maximum likelihood luminosity function, ...
... The large red circles denote our stepwise maximum likelihood luminosity function, ...
The Hipparcos Star Globe Booklet - Cosmos
... a number of stringent new tests for general relativity and cosmology. Due for launch in 2011, Gaia will use advanced technology to create an extremely precise dynamic 3D map of our Galaxy with positions, distances and velocities of stars. Significantly, Gaia’s observing programme will be complete an ...
... a number of stringent new tests for general relativity and cosmology. Due for launch in 2011, Gaia will use advanced technology to create an extremely precise dynamic 3D map of our Galaxy with positions, distances and velocities of stars. Significantly, Gaia’s observing programme will be complete an ...
Homework #3, AST 1002
... (b) A stellar spectrum visible from the Earth is an absorption spectrum. (c) The H and R in the term, "HR Diagram", stand for Helmholtz and Roberts. The correct answer(s) is(are) ____________. ...
... (b) A stellar spectrum visible from the Earth is an absorption spectrum. (c) The H and R in the term, "HR Diagram", stand for Helmholtz and Roberts. The correct answer(s) is(are) ____________. ...
Astronomy Chapter 17 – Galaxies A. Main Ideas 1. Discovering
... position changes as we move around the Sun is too small to be measured. Astronomers use the method of standard candles to measure the distance to distant galaxies. Using the inverse-square law and the known luminosity of Cepheid variables scientists are able to reasonable measurements of the distanc ...
... position changes as we move around the Sun is too small to be measured. Astronomers use the method of standard candles to measure the distance to distant galaxies. Using the inverse-square law and the known luminosity of Cepheid variables scientists are able to reasonable measurements of the distanc ...
PDF format
... e) False, you would have an equal chance of finding an elliptical galaxy in any environment in the universe. © 2014 Pearson Education, Inc. ...
... e) False, you would have an equal chance of finding an elliptical galaxy in any environment in the universe. © 2014 Pearson Education, Inc. ...
... the finite speed of light to measure distances. However, stars are so far away and such poor reflectors that this approach is impractical (though it is used to determine distances to planets in our solar system). The question of measuring star distances has occupied astronomers at least since the ti ...
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.