The Pennsylvanian Period in Alabama: Looking Up Astronomy and
... one must observe it with telescopes sensitive to longer wavelengths of light. The Galactic center is important because all objects in the disk of the Milky Way rotate around that point. If the Milky Way could be seen from the outside, it might resemble the galaxy shown in Fig. 8.2, bottom., known as ...
... one must observe it with telescopes sensitive to longer wavelengths of light. The Galactic center is important because all objects in the disk of the Milky Way rotate around that point. If the Milky Way could be seen from the outside, it might resemble the galaxy shown in Fig. 8.2, bottom., known as ...
The Milky Way - Midlandstech
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens as a star uses up its hydrogen? • What happens when a star exhausts its hydrogen? • What evidence do astronomers ha ...
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens as a star uses up its hydrogen? • What happens when a star exhausts its hydrogen? • What evidence do astronomers ha ...
Study Guide for 1ST Astronomy Exam
... Study Guide for Final Astronomy Exam The successful will be able to… Unit 5: The Night Sky Draw and label the celestial sphere for an observer at any latitude, Draw the apparent motion of stars as seen by any observer looking North, East, South or West, Use the simplified celestial sphere diag ...
... Study Guide for Final Astronomy Exam The successful will be able to… Unit 5: The Night Sky Draw and label the celestial sphere for an observer at any latitude, Draw the apparent motion of stars as seen by any observer looking North, East, South or West, Use the simplified celestial sphere diag ...
The Milky Way - 清華大學物理系歡迎頁 Welcome to
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens as a star uses up its hydrogen? • What happens when a star exhausts its hydrogen? • What evidence do astronomers ha ...
... is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens as a star uses up its hydrogen? • What happens when a star exhausts its hydrogen? • What evidence do astronomers ha ...
Galaxies - Mike Brotherton
... Mpc = megaparsec = 1 million parsecs Gpc = gigaparsec = 1 billion parsecs Distances of Mpc or even Gpc The light we see has left the galaxy millions or billions of years ago!! “Look-back times” of millions or billions of years ...
... Mpc = megaparsec = 1 million parsecs Gpc = gigaparsec = 1 billion parsecs Distances of Mpc or even Gpc The light we see has left the galaxy millions or billions of years ago!! “Look-back times” of millions or billions of years ...
The definition of a microscope: An instrument for viewing objects that
... the naked eye. Circa 1284 - Italian, Salvino D'Armate is credited with inventing the first wearable eye glasses. Hans Lippershey (ca. 1570-1619), a German-Dutch lens grinder and spectacle (glasses) maker, is generally credited with inventing the telescope. This is because in 1608 Lippsershey became ...
... the naked eye. Circa 1284 - Italian, Salvino D'Armate is credited with inventing the first wearable eye glasses. Hans Lippershey (ca. 1570-1619), a German-Dutch lens grinder and spectacle (glasses) maker, is generally credited with inventing the telescope. This is because in 1608 Lippsershey became ...
Extreme Optics and the Search for Earth-Like Planets
... • Are there Earth-like planets? • Are they common? • Is there life on some of them? ...
... • Are there Earth-like planets? • Are they common? • Is there life on some of them? ...
nasafinal - University of Oregon
... (hereafter XUV) features around normal galaxies that stimulated our interest in using PMO to discover possible new candidates for follow-up imaging with the GALEX satellite. Using the initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of th ...
... (hereafter XUV) features around normal galaxies that stimulated our interest in using PMO to discover possible new candidates for follow-up imaging with the GALEX satellite. Using the initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of th ...
Unit 8 Chapter 30
... average star, Rigel has an Absolute Magnitude of -6.4 which makes it appear brighter than most stars. Remember, all stars are not the same distance away, therefore, a faint star may really be very bright if it were closer. ...
... average star, Rigel has an Absolute Magnitude of -6.4 which makes it appear brighter than most stars. Remember, all stars are not the same distance away, therefore, a faint star may really be very bright if it were closer. ...
The Milky Way
... The Galactic Center does not emit visible light. There are too many stars in the way that block our view to the Galactic Center. The Galactic Center is always hidden behind the sun. The Milky Way does not have a center. There is too much dust and gas in the way that blocks our view to the Galactic C ...
... The Galactic Center does not emit visible light. There are too many stars in the way that block our view to the Galactic Center. The Galactic Center is always hidden behind the sun. The Milky Way does not have a center. There is too much dust and gas in the way that blocks our view to the Galactic C ...
star-formation rate
... • Instead we have photometric images in different broadband filters, since the observing time required for spectroscopy is substantially larger than for photometry. ...
... • Instead we have photometric images in different broadband filters, since the observing time required for spectroscopy is substantially larger than for photometry. ...
Build your own Galaxy - McDonald Observatory
... Extending your knowledge about galaxies Stars are easy to see with your eyes, but lots of hydrogen clumped into cool gas clouds also orbits the galaxy. Astronomers can see these clouds because they emit radio waves at a specific wavelength. Using radio telescopes, astronomers map out these hydrogen ...
... Extending your knowledge about galaxies Stars are easy to see with your eyes, but lots of hydrogen clumped into cool gas clouds also orbits the galaxy. Astronomers can see these clouds because they emit radio waves at a specific wavelength. Using radio telescopes, astronomers map out these hydrogen ...
What theories account for the origin of the solar system?
... Mercury, Venus, Earth, Mars: ~ size of a grain of salt. Jupiter: ~ size of an apple seed. Saturn: ~ slightly smaller than Jupiter’s “apple seed”. Pluto: ~ Speck of pepper. ...
... Mercury, Venus, Earth, Mars: ~ size of a grain of salt. Jupiter: ~ size of an apple seed. Saturn: ~ slightly smaller than Jupiter’s “apple seed”. Pluto: ~ Speck of pepper. ...
Slide 1 - Lawrencehallofscience
... Brown Dwarfs are stars that have too little mass to have ignited sustained nuclear fusion in their cores. They steadily cool as they age and are quite dim. Their sizes are not much larger than Jupiter. It turns out that objects with masses about that of Jupiter and higher do not get physically bigge ...
... Brown Dwarfs are stars that have too little mass to have ignited sustained nuclear fusion in their cores. They steadily cool as they age and are quite dim. Their sizes are not much larger than Jupiter. It turns out that objects with masses about that of Jupiter and higher do not get physically bigge ...
Galaxy Formation and Evolution Open Problems
... Stellar Halo • 109 old and metal poor stars (Pop.II) • 150 globular clusters (13 Gyr) • <0.2% Galaxy mass, 2% of the light •Dark Halo ...
... Stellar Halo • 109 old and metal poor stars (Pop.II) • 150 globular clusters (13 Gyr) • <0.2% Galaxy mass, 2% of the light •Dark Halo ...
Galaxies and the Universe
... • Proxima Centauri has a parallax of 0.77 arcseconds. So it is 1/0.77= 1.3 parsecs away. • Sense of scale: – If you make a model where the distance between the Earth and the Sun (1 AU) is an inch, then one light-year is a mile. One parsec is 3.26 miles. – The size of our galaxy, the Milky Way, is ab ...
... • Proxima Centauri has a parallax of 0.77 arcseconds. So it is 1/0.77= 1.3 parsecs away. • Sense of scale: – If you make a model where the distance between the Earth and the Sun (1 AU) is an inch, then one light-year is a mile. One parsec is 3.26 miles. – The size of our galaxy, the Milky Way, is ab ...
talk.wyse - Johns Hopkins University
... Massive pure-thin-disk galaxies exist: None should since mergers heat and puff-up disks, create bulges The MWG has a thick disk, and these stars are old, as in the bulge. This seems common but implies little merging since early times, to build them up Sgr dSph in the MWG proves late minor merging ha ...
... Massive pure-thin-disk galaxies exist: None should since mergers heat and puff-up disks, create bulges The MWG has a thick disk, and these stars are old, as in the bulge. This seems common but implies little merging since early times, to build them up Sgr dSph in the MWG proves late minor merging ha ...
Document
... Students will learn how to interpret observational characteristics of stars in terms of the underlying physical parameters You should gain an understanding of how stars of different mass evolve, and what end products are produced Students should learn what causes planetary nebulae and supernovae You ...
... Students will learn how to interpret observational characteristics of stars in terms of the underlying physical parameters You should gain an understanding of how stars of different mass evolve, and what end products are produced Students should learn what causes planetary nebulae and supernovae You ...
Crowdclass Supplemental Materials - Doris Jung
... • Sprial galaxies are formed by collisions of many galaxies. • (*) Tidal debris results from the differential force between one part of the galaxy and another part of the galaxy. • Spiral arms of galaxies contain old, red stars that are undergoing very little star formation activity. • We can identi ...
... • Sprial galaxies are formed by collisions of many galaxies. • (*) Tidal debris results from the differential force between one part of the galaxy and another part of the galaxy. • Spiral arms of galaxies contain old, red stars that are undergoing very little star formation activity. • We can identi ...
MSci Astrophysics 210PHY412
... Students will learn how to interpret observational characteristics of stars in terms of the underlying physical parameters You should gain an understanding of how stars of different mass evolve, and what end products are produced Students should learn what causes planetary nebulae and supernovae You ...
... Students will learn how to interpret observational characteristics of stars in terms of the underlying physical parameters You should gain an understanding of how stars of different mass evolve, and what end products are produced Students should learn what causes planetary nebulae and supernovae You ...
Syllabus
... Student Learning Outcomes, Core Curriculum, and Objectives: Astronomy is the study of the universe in which we live. The celestial bodies, including Earth, will be studied to improve our understanding of the origins, evolution, composition as well as the motion of these celestial bodies including: s ...
... Student Learning Outcomes, Core Curriculum, and Objectives: Astronomy is the study of the universe in which we live. The celestial bodies, including Earth, will be studied to improve our understanding of the origins, evolution, composition as well as the motion of these celestial bodies including: s ...
General Introduction 1. Luminosity, Flux and Magnitude The
... mass in a violent wind leading to a planetary nebula, the core slowly cools into a white dwarf remnant composed largely of carbon and oxygen. Stellar evolution can be easily observed using the HR diagram. Clusters contain stars presumably formed at nearly the same time and all stars within the clust ...
... mass in a violent wind leading to a planetary nebula, the core slowly cools into a white dwarf remnant composed largely of carbon and oxygen. Stellar evolution can be easily observed using the HR diagram. Clusters contain stars presumably formed at nearly the same time and all stars within the clust ...
Space Interferometry Mission
The Space Interferometry Mission, or SIM, also known as SIM Lite (formerly known as SIM PlanetQuest), was a planned space telescope developed by the U.S. National Aeronautics and Space Administration (NASA), in conjunction with contractor Northrop Grumman. One of the main goals of the mission was the hunt for Earth-sized planets orbiting in the habitable zones of nearby stars other than the Sun. SIM was postponed several times and finally cancelled in 2010.In addition to hunting for extrasolar planets, SIM would have helped astronomers construct a map of the Milky Way galaxy. Other important tasks would have included collecting data to help pinpoint stellar masses for specific types of stars, assisting in the determination of the spatial distribution of dark matter in the Milky Way and in the Local Group of galaxies and using the gravitational microlensing effect to measure the mass of stars.The spacecraft would have used optical interferometry to accomplish these and other scientific goals. This technique collects light with multiple mirrors (in SIM's case, two) which is combined to make an interference pattern which can be very precisely measured.The initial contracts for SIM Lite were awarded in 1998, totaling US$200 million. Work on the SIM project required scientists and engineers to move through eight specific new technology milestones, and by November 2006, all eight had been completed.SIM Lite was originally scheduled for a 2005 launch, aboard an Evolved Expendable Launch Vehicle (EELV). As a result of continued budget cuts, the launch date has been pushed back at least five times. NASA has set a preliminary launch date for 2015 and U.S. federal budget documents confirm that a launch date is expected ""no earlier"" than 2015. The budget cuts to SIM Lite are expected to continue through FY 2010. As of February 2007, many of the engineers working on the SIM program had moved on to other areas and projects, and NASA directed the project to allocate its resources toward engineering risk reduction. However, the preliminary budget for NASA for 2008 included zero dollars for SIM.In December 2007, the Congress restored funding for fiscal year 2008 as part of an omnibus appropriations bill which the President later signed. At the same time the Congress directed NASA to move the mission forward to the development phase. In 2009 the project continued its risk reduction work while waiting for the findings and recommendations of the Astronomy and Astrophysics Decadal Survey, Astro2010, performed by the National Academy of Sciences, which would determine the project's future.On 13 August 2010, the Astro2010 Decadal Report was released and did not recommend that NASA continue the development of the SIM Lite Astrometric Observatory. This prompted NASA Astronomy and Physics Director, Jon Morse, to issue a letter on 24 September 2010 to the SIM Lite project manager, informing him that NASA was discontinuing its sponsorship of the SIM Lite mission and directing the project to discontinue Phase B activities immediately or as soon as practical. Accordingly, all SIM Lite activities were closed down by the end of calendar year 2010.