ASTR 1101-001 Spring 2008 - Louisiana State University
... Transient Events (in time) also occur ...
... Transient Events (in time) also occur ...
Objectives
... • Energy released is more than 100 times what our sun will radiate over its entire lifetime • Supernovas outshine ALL the stars in its own galaxy COMBINED!! • May even be visible on earth during daylight hours • very rare ...
... • Energy released is more than 100 times what our sun will radiate over its entire lifetime • Supernovas outshine ALL the stars in its own galaxy COMBINED!! • May even be visible on earth during daylight hours • very rare ...
High resolution spectroscopy: what`s next?
... atmospheric features of the spectrum are marked. On the second panel from the top, the location of the Hα solar line (0.6563 µm) is indicated, although the solar signal is completely removed in the transmission spectrum. The signal-to-noise ratio (S/N) of the data as measured at the pseudo-continuum ...
... atmospheric features of the spectrum are marked. On the second panel from the top, the location of the Hα solar line (0.6563 µm) is indicated, although the solar signal is completely removed in the transmission spectrum. The signal-to-noise ratio (S/N) of the data as measured at the pseudo-continuum ...
Week 11 Concept Summary
... (c) Halo: The halo contains only older stars, almost all inside the globular clusters also found there. There is no gas and dust, and what stars are there have very low concentrations of heavy elements. They also orbit randomly in the gallaxy. 2. Interstellar Medium: This is the gas and dust that fl ...
... (c) Halo: The halo contains only older stars, almost all inside the globular clusters also found there. There is no gas and dust, and what stars are there have very low concentrations of heavy elements. They also orbit randomly in the gallaxy. 2. Interstellar Medium: This is the gas and dust that fl ...
ESA Science Program: Status of ILWS Related Activities
... Project for On-Board Autonomy within ESA D/TEC Successor of PROBA1 (launched in 2001, dedicated to Earth observation) ESA mission with Belgium as lead funder (through GSTP) Prime contractor: Verhaert Design & Devl. (Belgium) 2 calls for ideas for technology experiments and scientific payload resulte ...
... Project for On-Board Autonomy within ESA D/TEC Successor of PROBA1 (launched in 2001, dedicated to Earth observation) ESA mission with Belgium as lead funder (through GSTP) Prime contractor: Verhaert Design & Devl. (Belgium) 2 calls for ideas for technology experiments and scientific payload resulte ...
How to Become a Planet Hunter-Careers in
... How Much Wobble? It can be measured with an accuracy of about 1 μas (quite a bit thinner than the line plotted here). “The wobble effect”: our Solar System as seen at 10 pc distance ...
... How Much Wobble? It can be measured with an accuracy of about 1 μas (quite a bit thinner than the line plotted here). “The wobble effect”: our Solar System as seen at 10 pc distance ...
PLANETARY MOTION
... geometry of ellipses has to be well understood and it is required to understand the fitting procedure of data points to a linear relation. The use case is therefore suggested for students at college level. ...
... geometry of ellipses has to be well understood and it is required to understand the fitting procedure of data points to a linear relation. The use case is therefore suggested for students at college level. ...
Ch. 21 notes-1
... Some galaxies do not have regular shapes. The Large Magellanic Cloud is an irregular galaxy about 160,000 light-years away from our galaxy. It is one of our closest neighbors. 21.5 History of the Universe Explain the big bang theory of how the universe was formed. Describe how the solar system ...
... Some galaxies do not have regular shapes. The Large Magellanic Cloud is an irregular galaxy about 160,000 light-years away from our galaxy. It is one of our closest neighbors. 21.5 History of the Universe Explain the big bang theory of how the universe was formed. Describe how the solar system ...
PLANETARY MOTION G. Iafrate(a) and M. Ramella(a) (a) INAF
... geometry of ellipses has to be well understood and it is required to understand the fitting procedure of data points to a linear relation. The use case is therefore suggested for students at college level. ...
... geometry of ellipses has to be well understood and it is required to understand the fitting procedure of data points to a linear relation. The use case is therefore suggested for students at college level. ...
UNIVERSAL GRAVITATION
... The numbers above show that g is smaller by about 0.05 m/s2 at the equator than at the poles. An obvious candidate to explain this is the rotation of the earth which requires a centripetal acceleration at the equator but not on the earth’s axis (ie at the poles). We see that ac, which must be subtra ...
... The numbers above show that g is smaller by about 0.05 m/s2 at the equator than at the poles. An obvious candidate to explain this is the rotation of the earth which requires a centripetal acceleration at the equator but not on the earth’s axis (ie at the poles). We see that ac, which must be subtra ...
ASTR 101 Final Study Guide Use as a guide to the topics as you
... Black holes do not allow anything in their event horizon to escape this includes any type of matter as well as photons A black holes gravity warps space time We know they are there by watching their interactions with things around them. Through watching things orbit them at a safe distance away givi ...
... Black holes do not allow anything in their event horizon to escape this includes any type of matter as well as photons A black holes gravity warps space time We know they are there by watching their interactions with things around them. Through watching things orbit them at a safe distance away givi ...
14 The Interstellar Medium and Star Formation
... wavelength of 21 centimeters, which is in the radio portion of the electromagnetic spectrum. Actual 21-cm spectra are complex because the lines are Doppler-shifted and broadened. The Doppler shift is caused by the radial velocity of the cloud. It is used to measure the radial velocity. ...
... wavelength of 21 centimeters, which is in the radio portion of the electromagnetic spectrum. Actual 21-cm spectra are complex because the lines are Doppler-shifted and broadened. The Doppler shift is caused by the radial velocity of the cloud. It is used to measure the radial velocity. ...
Measuring Stars
... band, going from upper left corner (hot, luminous, massive stars) to the lower right corner (cool, dim, low mass stars). Those are the stars fusing hydrogen in their cores. Since every star spend most of their life cycle in the hydrogen burning main sequence stage, it is the mostly populated region ...
... band, going from upper left corner (hot, luminous, massive stars) to the lower right corner (cool, dim, low mass stars). Those are the stars fusing hydrogen in their cores. Since every star spend most of their life cycle in the hydrogen burning main sequence stage, it is the mostly populated region ...
The Earth in the Universe - Sierra College Astronomy Home Page
... Kepler’s empirical laws were later explained by the use of Newton’s dynamical laws of motion and gravitation – the first unified theory of physics © Sierra College Astronomy Department ...
... Kepler’s empirical laws were later explained by the use of Newton’s dynamical laws of motion and gravitation – the first unified theory of physics © Sierra College Astronomy Department ...
Sky Science Notes
... the same time as it is revolving around the Earth, once in 27 1/3 days. This is why we never seen the dark side of the moon. The moon shows different phases as it revolves around Earth. Half the moon is always in the sunlight, just as half the Earth has day while the other half has night. The phases ...
... the same time as it is revolving around the Earth, once in 27 1/3 days. This is why we never seen the dark side of the moon. The moon shows different phases as it revolves around Earth. Half the moon is always in the sunlight, just as half the Earth has day while the other half has night. The phases ...
Light, spectra, Doppler shifts
... other metallic lines in its spectrum, but it has relatively weak hydrogen lines, then its atmosphere must be composed of Fe, Ca, Na, but little H, right? That's what astronomers thought until the 1920's. They then realized that the fraction of atoms that were ionized was critical to understanding wh ...
... other metallic lines in its spectrum, but it has relatively weak hydrogen lines, then its atmosphere must be composed of Fe, Ca, Na, but little H, right? That's what astronomers thought until the 1920's. They then realized that the fraction of atoms that were ionized was critical to understanding wh ...
05spectralclasses
... Classification of Stellar Spectra Late 1800s: first high-quality spectral measurements of stars What are the main features – and how to classify them? ...
... Classification of Stellar Spectra Late 1800s: first high-quality spectral measurements of stars What are the main features – and how to classify them? ...
Stars - winterk
... • Named it SN 1987A and it is 163 000 light years away • This means Shelton was looking at the supernova the way it was 163 000 yrs ago! ...
... • Named it SN 1987A and it is 163 000 light years away • This means Shelton was looking at the supernova the way it was 163 000 yrs ago! ...
PDF
... Many of the faint red low mass objects that can potentially add up to some significant fraction of the mass of the Milky Way are out of reach for Gaia but well within these surveys limiting magnitudes. Challenges in this work are related to the electronics and read-out related systematics affecting ...
... Many of the faint red low mass objects that can potentially add up to some significant fraction of the mass of the Milky Way are out of reach for Gaia but well within these surveys limiting magnitudes. Challenges in this work are related to the electronics and read-out related systematics affecting ...
Fred Chapman`s Rebuilding Projects Some Cave History
... without destroying the post or fence. A little push with my truck would have solved the problem also, but Lora didn’t think it was a good idea. By 8:40 we were in place and setting up our scopes. By 9 pm the guest and public were arriving. Oh yea, I did spot a field mouse running across the road as ...
... without destroying the post or fence. A little push with my truck would have solved the problem also, but Lora didn’t think it was a good idea. By 8:40 we were in place and setting up our scopes. By 9 pm the guest and public were arriving. Oh yea, I did spot a field mouse running across the road as ...
1. absolute brightness -
... 33. star cluster • group of stars that formed at the same time from the same materials. • All roughly the same age, composition, and distance from Earth. ...
... 33. star cluster • group of stars that formed at the same time from the same materials. • All roughly the same age, composition, and distance from Earth. ...
Naval IQbservatory Washington 25. DC
... Sirius B, has a density roughly 50,000 times that of the sun. Before its discovery Eddington had forecast the existence of such super-C:ense white dwarf stars. In 1'9.25 W:llter Adams at Mt. Wilson Cbservatory confirmed the Eirurteinian gravitati·on8J.• red shift in the spectrum of dense ~t.ars by o ...
... Sirius B, has a density roughly 50,000 times that of the sun. Before its discovery Eddington had forecast the existence of such super-C:ense white dwarf stars. In 1'9.25 W:llter Adams at Mt. Wilson Cbservatory confirmed the Eirurteinian gravitati·on8J.• red shift in the spectrum of dense ~t.ars by o ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.