lecture
... • Because the gas hits the star before it reaches a stable orbital speed, there is no way to tell where the gas is in the system. • Therefore the only way to map it is with the velocities from the Doppler Shift and phases from the timing of the observations. • Make a contour map using velocity and p ...
... • Because the gas hits the star before it reaches a stable orbital speed, there is no way to tell where the gas is in the system. • Therefore the only way to map it is with the velocities from the Doppler Shift and phases from the timing of the observations. • Make a contour map using velocity and p ...
Citizen Sky Epsilon Aurigae Script for Fulldome Planetariums
... noticeably from their constellation patterns, but a few change in brightness. One such star, Algol, appears in the winter constellation of Perseus, the ancient Greek warrior who beheaded Medusa, the serpent-haired Gorgon who threatened Cassiopeia’s kingdom. Algol marks the “evil eye” of Medusa’s sev ...
... noticeably from their constellation patterns, but a few change in brightness. One such star, Algol, appears in the winter constellation of Perseus, the ancient Greek warrior who beheaded Medusa, the serpent-haired Gorgon who threatened Cassiopeia’s kingdom. Algol marks the “evil eye” of Medusa’s sev ...
Celestial Distances - Wayne State University
... Summary of Tools for Measuring Celestial Distances Within the solar system, distances are determined by timing how long it takes radar signals to travel from the Earth to a planet or other body and then return Distances to nearest stars can be measured using the parallax (triangulation) method For ...
... Summary of Tools for Measuring Celestial Distances Within the solar system, distances are determined by timing how long it takes radar signals to travel from the Earth to a planet or other body and then return Distances to nearest stars can be measured using the parallax (triangulation) method For ...
Star Spectra - Renton School District
... A star orbited by a large planet will move in a small circle. This will cause its spectrum to be slightly redshifted part of the time and blueshifted at other times. ...
... A star orbited by a large planet will move in a small circle. This will cause its spectrum to be slightly redshifted part of the time and blueshifted at other times. ...
Summary Of the Structure of the Milky Way
... RR Lyrae variables are periodic variable stars, commonly found in globular clusters, and often used as standard candles to measure galactic distances. • This type of variable is named after the prototype, the variable star RR Lyrae in the constellation Lyra. • RR Lyraes are pulsating horizontal bra ...
... RR Lyrae variables are periodic variable stars, commonly found in globular clusters, and often used as standard candles to measure galactic distances. • This type of variable is named after the prototype, the variable star RR Lyrae in the constellation Lyra. • RR Lyraes are pulsating horizontal bra ...
Binary star formation
... Another idea is to make the stars larger targets - form binaries via capture early on when the stars still have massive disks around them: ...
... Another idea is to make the stars larger targets - form binaries via capture early on when the stars still have massive disks around them: ...
07-TysonsZodiacAreTh.. - Saptarishis Astrology
... Scorpius, the sign that is advertised to precede Sagittarius. The confusing conclusion is that most Scorpions are actually Ophiuchans, and all Scorpions and Ophiuchans are currently Librans. The fourteenth constellation in the set is Cetus. It is a large constellation that dips into Pisces. The Sun ...
... Scorpius, the sign that is advertised to precede Sagittarius. The confusing conclusion is that most Scorpions are actually Ophiuchans, and all Scorpions and Ophiuchans are currently Librans. The fourteenth constellation in the set is Cetus. It is a large constellation that dips into Pisces. The Sun ...
lecture2_3
... •Study their motions, measure their speeds •Fundamental to understand the evolution of the sources and how their interact with each other (e.g. merging, collisions) •Measure their redshift, determine their distance from us •Fundamental to chart the large-scale structure of the Universe and to study ...
... •Study their motions, measure their speeds •Fundamental to understand the evolution of the sources and how their interact with each other (e.g. merging, collisions) •Measure their redshift, determine their distance from us •Fundamental to chart the large-scale structure of the Universe and to study ...
Chapter 12 Stellar Evolution
... Which of the following are old stars with no current nuclear reactions? A. red giants B. main sequence stars C. white dwarfs D. proto stars ...
... Which of the following are old stars with no current nuclear reactions? A. red giants B. main sequence stars C. white dwarfs D. proto stars ...
Supermassive black holes
... rather random orbital orientations. Disk stars are younger, more metal rich and orbit in the same orientation, excepting some up and down motion ...
... rather random orbital orientations. Disk stars are younger, more metal rich and orbit in the same orientation, excepting some up and down motion ...
AS1001:Extra-Galactic Astronomy Stars and Gas in Galaxies
... • Multiple images of some quasars. • Background sources are magnified and distorted by gravitational lensing as the light passes through an intervening galaxy or cluster of galaxies. ...
... • Multiple images of some quasars. • Background sources are magnified and distorted by gravitational lensing as the light passes through an intervening galaxy or cluster of galaxies. ...
24.1 Hubble`s Galaxy Classification
... clusters in the halo of our Galaxy, while Cepheid variables, being so much brighter, allow measurement of galaxies to about 25 Mpc away. The image below shows a Cepheid variable spotted in a galaxy in the Virgo Cluster of galaxies. You can see it getting fainter and brighter in the insets. ...
... clusters in the halo of our Galaxy, while Cepheid variables, being so much brighter, allow measurement of galaxies to about 25 Mpc away. The image below shows a Cepheid variable spotted in a galaxy in the Virgo Cluster of galaxies. You can see it getting fainter and brighter in the insets. ...
Lecture 11, PPT version
... the “zero velocity” line pattern. The curved magenta line above shows you how one particular black absorption line sweeps up and down the spectrum due to orbital motion. ...
... the “zero velocity” line pattern. The curved magenta line above shows you how one particular black absorption line sweeps up and down the spectrum due to orbital motion. ...
Chapter 13
... graphite, and an important family of organic molecules (polycyclic aromatic hydocarbons); PAHs are common to daily life (they form by incomplete burning of carbon-containing fuels) and provide us with a tool to understanding the abundances of chemicals related to life. ...
... graphite, and an important family of organic molecules (polycyclic aromatic hydocarbons); PAHs are common to daily life (they form by incomplete burning of carbon-containing fuels) and provide us with a tool to understanding the abundances of chemicals related to life. ...
70 Thousand Million, Million, Million Stars in Space
... varies depending on the orbit of both planets. Venus can be as close as 23,612,105 miles (38 million km) or as far away as 162,177,881 miles (261 million km). At its nearest point, Venus can be seen in the night sky. It reflects sunlight, making it look like a very bright star. ...
... varies depending on the orbit of both planets. Venus can be as close as 23,612,105 miles (38 million km) or as far away as 162,177,881 miles (261 million km). At its nearest point, Venus can be seen in the night sky. It reflects sunlight, making it look like a very bright star. ...
PPT file
... “there are more stars in the universe than grains of sand on all the beaches of Earth.” In between stars there is interstellar matter, which is made up of gas (mostly Hydrogen) and dust. Birth of a Star Gravity attracts chunks of gas and dust in a nebula to come ...
... “there are more stars in the universe than grains of sand on all the beaches of Earth.” In between stars there is interstellar matter, which is made up of gas (mostly Hydrogen) and dust. Birth of a Star Gravity attracts chunks of gas and dust in a nebula to come ...
Friday, January 27, 2017 First exam a week from today. Review
... Some suggested an alien structure. Bunk (no heat signal), but still not well explained with serious science. ...
... Some suggested an alien structure. Bunk (no heat signal), but still not well explained with serious science. ...
Exam2 Review Slides
... fixed relative to Earth – They move around the center of the galaxy, just as Earth does. – This motion of stars through the sky (independent of the Earth’s rotation or orbit) is called proper motion – Over time, the constellations will change shape! ...
... fixed relative to Earth – They move around the center of the galaxy, just as Earth does. – This motion of stars through the sky (independent of the Earth’s rotation or orbit) is called proper motion – Over time, the constellations will change shape! ...
Chapter 34: Cosmology FYI 1. Radar Ranging 2. Triangulation idea
... P4: Consider light observed on earth that was emitted by atoms moving with stars or galaxies. Which statements are true? a. You can actually see little red atoms that have been shifted to the left. They have small beady red eyes and cannot be trusted. b. The spectral colors emitted by the atoms movi ...
... P4: Consider light observed on earth that was emitted by atoms moving with stars or galaxies. Which statements are true? a. You can actually see little red atoms that have been shifted to the left. They have small beady red eyes and cannot be trusted. b. The spectral colors emitted by the atoms movi ...
Star Formation, HR Diagram, and the Main Sequence (Professor
... Stars do not form isolated, but in large groups, called Open Star Clusters . Our own Sun is part of an open cluster than includes other nearby stars such as Alpha Centauri and Barnard's star. ...
... Stars do not form isolated, but in large groups, called Open Star Clusters . Our own Sun is part of an open cluster than includes other nearby stars such as Alpha Centauri and Barnard's star. ...
5. cosmic distance ladder ii: standard candles
... easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its luminosity. Then you only have to measure its brightness to be able to compute its distance. ...
... easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its luminosity. Then you only have to measure its brightness to be able to compute its distance. ...
test - Scioly.org
... b. Meteor shower e. Giant shower c. Supernova d. Nebula 30. What is the stage that stars spend majority of their lives at? a. Protostar b. Planetray nebula e. Mira c. Main sequence d. Red giant 31. What is the cloud of matter from which stars originate? a. Molecular cloud b. Proton cloud e. Dark mat ...
... b. Meteor shower e. Giant shower c. Supernova d. Nebula 30. What is the stage that stars spend majority of their lives at? a. Protostar b. Planetray nebula e. Mira c. Main sequence d. Red giant 31. What is the cloud of matter from which stars originate? a. Molecular cloud b. Proton cloud e. Dark mat ...
Learning Objectives
... easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its luminosity. Then you only have to measure its brightness to be able to compute its distance. ...
... easily calculated. However, some special types of variable and exploding stars do have known, standard luminosities. Consequently, if you can identify a star as being one of these special types, you know its luminosity. Then you only have to measure its brightness to be able to compute its distance. ...
Lecture 5: The H-R diagram, standard candles and cosmic distances
... scales strongly with mass, approximately as L∝M3.5 ...
... scales strongly with mass, approximately as L∝M3.5 ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.