Stars, Galaxies, and the Universe
... The galaxies are all moving away from each other. The farther away a galaxy is away from the Milky Way, the faster it moves away, because there is more space. ...
... The galaxies are all moving away from each other. The farther away a galaxy is away from the Milky Way, the faster it moves away, because there is more space. ...
Is Protostellar Jet Spinning? Chin
... warm and dense molecular gas at high angular resolution, can be used to extract this crucial information from the jets. Herbig-Haro (HH) 211 is a well-defined bipolar (two-sided) jet located at only 1000 light-year away in the constellation Perseus. Lying close to plane of the sky, it is one of the ...
... warm and dense molecular gas at high angular resolution, can be used to extract this crucial information from the jets. Herbig-Haro (HH) 211 is a well-defined bipolar (two-sided) jet located at only 1000 light-year away in the constellation Perseus. Lying close to plane of the sky, it is one of the ...
What is a Star?
... km/s – 1 light year = the distance a ray of light travels in 1 year. 9.5 trillion km. Horsehead Nebula is 1,500 light years away) ...
... km/s – 1 light year = the distance a ray of light travels in 1 year. 9.5 trillion km. Horsehead Nebula is 1,500 light years away) ...
Model SEDs of Massive YSOs
... formation in Galaxy – Star formation rate, lifetimes of evolutionary states, IMF – A high star formation efficiency argues for turbulent cloud support (vs. magnetic) ...
... formation in Galaxy – Star formation rate, lifetimes of evolutionary states, IMF – A high star formation efficiency argues for turbulent cloud support (vs. magnetic) ...
9ol.ASTRONOMY 1 ... Identify Terms - Matching (20 @ 1 point each =...
... Asteroid Comet Kuiper belt Half-life Solar nebula theory Protoplanet Gravitational collapse Condensation Extrasolar planet Hot Jupiter Accretion Ice line Outgassing ...
... Asteroid Comet Kuiper belt Half-life Solar nebula theory Protoplanet Gravitational collapse Condensation Extrasolar planet Hot Jupiter Accretion Ice line Outgassing ...
Lecture 11 - Stars and Atomic Spectra
... Photon energy • Up to now, we have been discussing the wavelength of light as determining it color • However, light comes in discrete packets called photons and the energy of each photon is set by its color or wavelength • From Einstein, we known that the photon energy is inversely proportional to ...
... Photon energy • Up to now, we have been discussing the wavelength of light as determining it color • However, light comes in discrete packets called photons and the energy of each photon is set by its color or wavelength • From Einstein, we known that the photon energy is inversely proportional to ...
Star Formation 1 - Center for Astrostatistics
... increase, and collapse stops when hydrostatic equilibriumis achieved; that is, when the inward pull of gravity and outward push of gas pressure are equal everywhere. The result is a sphere, hot & dense in the core, cooler & less dense at the edges. Will this cloud of atoms in equilibrium persist for ...
... increase, and collapse stops when hydrostatic equilibriumis achieved; that is, when the inward pull of gravity and outward push of gas pressure are equal everywhere. The result is a sphere, hot & dense in the core, cooler & less dense at the edges. Will this cloud of atoms in equilibrium persist for ...
A stars
... However, massive, bright stars are much more short-lived than smaller, stars. In the case of the massive O stars and B main sequence stars, these very objects race through their life-cycles in only a few tens of millions of years – too quickly to allow even primitive life-forms to emerge. ...
... However, massive, bright stars are much more short-lived than smaller, stars. In the case of the massive O stars and B main sequence stars, these very objects race through their life-cycles in only a few tens of millions of years – too quickly to allow even primitive life-forms to emerge. ...
Light and the Electromagnetic Spectrum Problems
... Because light gets blocked and scattered by dust and gas, it is sometimes helpful to look at the same object in different frequencies. Look at the images of the multiwavelength of the Milky Way. Each of these images is a picture of our Milky Way galaxy; we will see later that we are just one star i ...
... Because light gets blocked and scattered by dust and gas, it is sometimes helpful to look at the same object in different frequencies. Look at the images of the multiwavelength of the Milky Way. Each of these images is a picture of our Milky Way galaxy; we will see later that we are just one star i ...
Test 2, Nov. 17, 2015 - Physics@Brock
... 15. Star S radiates most energy at 400 nanometers and star U radiates most energy at 700 nanometers. From this we can conclude that (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison of their surf ...
... 15. Star S radiates most energy at 400 nanometers and star U radiates most energy at 700 nanometers. From this we can conclude that (a) star S has hotter surface than star U. (b) star S has colder surface than star U. (c) both stars have the same surface temperature. (d) [No comparison of their surf ...
Unit 1 - UW Madison Astronomy Department
... A solid body (e.g. a brick of metallic iron of size 1 cm) does not emit a distinct emission line spectrum of its constituent atoms as a. as there are no laws for emission for solid bodies b. quantum mechanics is not applicable to any solid body starting from the size of ...
... A solid body (e.g. a brick of metallic iron of size 1 cm) does not emit a distinct emission line spectrum of its constituent atoms as a. as there are no laws for emission for solid bodies b. quantum mechanics is not applicable to any solid body starting from the size of ...
WK9Winter2004
... “Gravity as Newton and Einstein knew it does not exist. When the United States launched the first space probe it kept going off course. Well, it took them awhile to re-analyze all the evidence and what they came up with is that gravity does not exist in space. This is how I was able to detect what ...
... “Gravity as Newton and Einstein knew it does not exist. When the United States launched the first space probe it kept going off course. Well, it took them awhile to re-analyze all the evidence and what they came up with is that gravity does not exist in space. This is how I was able to detect what ...
BML_V
... Most HI studies of our Galaxy depend on first completing a mapping survey, so that the HI column density is determined as a function of position and velocity. Arecibo is ideal for this, given its sensitivity, angular resolution, and complement of high-resolution spectrometers, now it is equipped wit ...
... Most HI studies of our Galaxy depend on first completing a mapping survey, so that the HI column density is determined as a function of position and velocity. Arecibo is ideal for this, given its sensitivity, angular resolution, and complement of high-resolution spectrometers, now it is equipped wit ...
EM Spectrum notes - Biloxi Public Schools
... spiral with roughly 100 billion other stars spiral arms and a bright central part sun is halfway to the edge of galaxy along Orion spiral arm 100,000 light-years across Black hole at the center cannot see the spiral shape of the Milky Way Galaxy from Earth because we are located within one of its sp ...
... spiral with roughly 100 billion other stars spiral arms and a bright central part sun is halfway to the edge of galaxy along Orion spiral arm 100,000 light-years across Black hole at the center cannot see the spiral shape of the Milky Way Galaxy from Earth because we are located within one of its sp ...
Positions in the Solar System
... Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
... Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
Slide 1
... Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
... Bang Theory. The theory states that the universe originated sometime between 10 billion and 20 billion years ago from an enormous explosion of a small volume of matter at extremely high density and temperature. ...
Lecture1
... These small angles are very difficult to measure from the ground; the atmosphere tends to blur images on scales of ~1 arcsec. It is possible to measure parallax angles smaller than this, but only down to ~0.02 arcsec (corresponding to a distance of 1/0.02 = 50 pc). ...
... These small angles are very difficult to measure from the ground; the atmosphere tends to blur images on scales of ~1 arcsec. It is possible to measure parallax angles smaller than this, but only down to ~0.02 arcsec (corresponding to a distance of 1/0.02 = 50 pc). ...
Lecture 2+3 - University of Texas Astronomy Home Page
... 1. The Co-op has 49 new textbooks as of Friday for this class “The Cosmic Perspective, 3rd edition, Media Update” 2. What is the difference between “The Cosmic Perspective, 3rd edition” and “The Cosmic Perspective, 3rd edition, Media Update” ? The book contents are the same, but the media update ver ...
... 1. The Co-op has 49 new textbooks as of Friday for this class “The Cosmic Perspective, 3rd edition, Media Update” 2. What is the difference between “The Cosmic Perspective, 3rd edition” and “The Cosmic Perspective, 3rd edition, Media Update” ? The book contents are the same, but the media update ver ...
Geologic Time and Origins of the Earth
... • Maybe a nearby star exploded, sending its mass out into space • This mass collided with our dust cloud ...
... • Maybe a nearby star exploded, sending its mass out into space • This mass collided with our dust cloud ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.