Week one: Space Physics and Aeronomy (pdf, 1.3 MB)
... • Planetesimals clump into a lumpy protoplanet. • The interior heats, softens, and forms a sphere. The interior differentiates into: ...
... • Planetesimals clump into a lumpy protoplanet. • The interior heats, softens, and forms a sphere. The interior differentiates into: ...
Ay122a&Fall&2015+16& Background&subtrac9on,&calibra9on,& analysis& &
... Although&the&background&responds&to&the&QE/flat&field,&it&may&and&oQen&will& illuminate&the&detector&non+uniformly,&i.e.&differently&than&does&an& astronomical&source&located&at&infinity.&&&Background&is&composed&of:& • Thermal&emission&from&telescope&components& • Stray&or&scaVered&light&from&out&of& ...
... Although&the&background&responds&to&the&QE/flat&field,&it&may&and&oQen&will& illuminate&the&detector&non+uniformly,&i.e.&differently&than&does&an& astronomical&source&located&at&infinity.&&&Background&is&composed&of:& • Thermal&emission&from&telescope&components& • Stray&or&scaVered&light&from&out&of& ...
QSOs . Continuum Radiation Energy Source
... Do collisions between Spirals make Ellipticals? The Milky Way Meets Andromeda 2.5 million ly away Approaching at 500,000 km/hr Collision in 3 billion yrs Movie lasts 1.3 billion yrs. ...
... Do collisions between Spirals make Ellipticals? The Milky Way Meets Andromeda 2.5 million ly away Approaching at 500,000 km/hr Collision in 3 billion yrs Movie lasts 1.3 billion yrs. ...
30-1
... _____ 12. In the Northern Hemisphere, circumpolar stars appear a. to be extremely distant. b. to circle the sun. c. to circle Polaris, the North Star. d. to circle Mars and Venus. 13. What is the Doppler effect? _______________________________________________________________ ________________________ ...
... _____ 12. In the Northern Hemisphere, circumpolar stars appear a. to be extremely distant. b. to circle the sun. c. to circle Polaris, the North Star. d. to circle Mars and Venus. 13. What is the Doppler effect? _______________________________________________________________ ________________________ ...
Lecture 26
... (and thus nearly stellar), hence the term `quasi-stellar object' (QSO), which became quasar. ...
... (and thus nearly stellar), hence the term `quasi-stellar object' (QSO), which became quasar. ...
Spectral Classification of Stars
... From the relative strength of absorption lines (carefully accounting for their temperature dependence), one can infer the composition of stars. ...
... From the relative strength of absorption lines (carefully accounting for their temperature dependence), one can infer the composition of stars. ...
Astronomy 100, Fall 2006 Name: Due: December 5, 2006 at 11 a.m.
... Two models for how stars orbit a galactic center: the “record” model, in which the stars all revolve at the same angular rate around the center, like they were stuck on a record on a turntable, and the “swirling taffy” model, in which stars at a certain distance from the center all move at the same ...
... Two models for how stars orbit a galactic center: the “record” model, in which the stars all revolve at the same angular rate around the center, like they were stuck on a record on a turntable, and the “swirling taffy” model, in which stars at a certain distance from the center all move at the same ...
Spectra and the Doppler Effect
... 11. What will happen to the frequency (or color) of light if a star is moving towards us? ...
... 11. What will happen to the frequency (or color) of light if a star is moving towards us? ...
Size and Scale
... Moons, Asteroids, and Comets • Moons (or satellites) are objects that orbit a planet • An asteroid is a relatively small and rocky object that orbits a star • A comet is a relatively small and icy object that orbits a star ...
... Moons, Asteroids, and Comets • Moons (or satellites) are objects that orbit a planet • An asteroid is a relatively small and rocky object that orbits a star • A comet is a relatively small and icy object that orbits a star ...
EXERCISES: Set 4 of 4 Q1: (You will need a ruler and a calculator
... (b) Measure the equivalent widths of lines (1) and (2). Why is it not possible to measure the equivalent width of line (3) accurately? (c) Assuming that lines (1) and (2) are Lyα lines, deduce the corresponding column densities of neutral hydrogen, N (H i), if it is possible to do so. If it is not p ...
... (b) Measure the equivalent widths of lines (1) and (2). Why is it not possible to measure the equivalent width of line (3) accurately? (c) Assuming that lines (1) and (2) are Lyα lines, deduce the corresponding column densities of neutral hydrogen, N (H i), if it is possible to do so. If it is not p ...
Bill Nye: Outer Space
... 1. _______ is the fastest thing in the universe. It travels ___________ km/sec. 2. The closest star to our sun is 4.3 _________________ away. 3. ________________________ is the distance that light travels in a year. 4. __________ trillion km = 1 light year 5. True or False: All the stars you can see ...
... 1. _______ is the fastest thing in the universe. It travels ___________ km/sec. 2. The closest star to our sun is 4.3 _________________ away. 3. ________________________ is the distance that light travels in a year. 4. __________ trillion km = 1 light year 5. True or False: All the stars you can see ...
1.1 Safety in the Science Classroom
... 10.1 The Early Universe • Until 100 years ago, scientists believed nothing ever changed in outer space. a) Using powerful telescopes, astronomers like Edwin Hubble discovered many new celestial bodies, and observed that everything in the universe was moving further apart. b) The universe expands li ...
... 10.1 The Early Universe • Until 100 years ago, scientists believed nothing ever changed in outer space. a) Using powerful telescopes, astronomers like Edwin Hubble discovered many new celestial bodies, and observed that everything in the universe was moving further apart. b) The universe expands li ...
Intro to Astronomy
... In 1919 Edwin Hubble was working as an astronomer in California. He was using a telescope that was nearly 3 meters across and discovered that there were objects millions of light years away- and that these objects are other galaxies!! ...
... In 1919 Edwin Hubble was working as an astronomer in California. He was using a telescope that was nearly 3 meters across and discovered that there were objects millions of light years away- and that these objects are other galaxies!! ...
Lec11
... We can measure rotation curves of other spiral galaxies using the Doppler shift of the 21-cm line of atomic H ...
... We can measure rotation curves of other spiral galaxies using the Doppler shift of the 21-cm line of atomic H ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.