The Interstellar Medium Chapter 10
... You have begun your study of the sun and other stars, but now it is time to study something that is nearly invisible. The thin gas and dust that drifts through space between the stars is produced in part by dying stars and can give birth to new stars. This chapter will show you how important spectro ...
... You have begun your study of the sun and other stars, but now it is time to study something that is nearly invisible. The thin gas and dust that drifts through space between the stars is produced in part by dying stars and can give birth to new stars. This chapter will show you how important spectro ...
Core-collapse supernovae and their massive progenitors
... assive stars form in star clusters within star-forming galaxies, pollute the interstellar medium and inject energy and momentum via powerful stellar winds and core-collapse supernovae. Direct detection of massive stars via the UV continua and indirectly via ionized H ii regions provides some of the ...
... assive stars form in star clusters within star-forming galaxies, pollute the interstellar medium and inject energy and momentum via powerful stellar winds and core-collapse supernovae. Direct detection of massive stars via the UV continua and indirectly via ionized H ii regions provides some of the ...
Measuring Interstellar Extinction
... The interstellar extinction of starlight is the most indicative phenomenon revealing the presence of diffuse dark matter in the Galaxy. The first documented observation of extinction effects, appearing in the form of dark regions, is that of Sir William Herschel who in 1784 observed a section of the ...
... The interstellar extinction of starlight is the most indicative phenomenon revealing the presence of diffuse dark matter in the Galaxy. The first documented observation of extinction effects, appearing in the form of dark regions, is that of Sir William Herschel who in 1784 observed a section of the ...
PPT - LSC
... • Many extra solar planets are found using many absorption lines (～5000) of nearby G type stars since small orbital motion up to 10m/s can be measured • Loeb (1998) proposed to apply this techniques to many QSO absorption lines so that two observations between ten years yield direct measurement of C ...
... • Many extra solar planets are found using many absorption lines (～5000) of nearby G type stars since small orbital motion up to 10m/s can be measured • Loeb (1998) proposed to apply this techniques to many QSO absorption lines so that two observations between ten years yield direct measurement of C ...
Hungry Young Stars: A New Explanation for the FU Ori Outbursts
... transient brightening (by factors of hundreds) of a class of young stars known as the FUOr’s. • We solve the equations of gas dynamics ...
... transient brightening (by factors of hundreds) of a class of young stars known as the FUOr’s. • We solve the equations of gas dynamics ...
Jan 2017 Newsletter here
... On the beach subject, Wendy has a new BBQ which we trialled successfully the other day. There is left over steak from the Xmas party in the freezer which needs to be eaten. We will try to plan a BBQ fly out whenever the tides suit. Lunchtime or evening. Sat or Sun. give me some feedback on what you ...
... On the beach subject, Wendy has a new BBQ which we trialled successfully the other day. There is left over steak from the Xmas party in the freezer which needs to be eaten. We will try to plan a BBQ fly out whenever the tides suit. Lunchtime or evening. Sat or Sun. give me some feedback on what you ...
Surveying the Stars
... How would the apparent brightness of Alpha Centauri change if it were three times farther away? A. B. C. D. ...
... How would the apparent brightness of Alpha Centauri change if it were three times farther away? A. B. C. D. ...
abstract submission - MOST - University of British Columbia
... Abstract. The MOST (Microvariability and Oscillations of STars) astronomy mission under the Canadian Space Agency’s Small Payloads Program is Canada’s first space science microsatellite and is scheduled to launch in June 2003. The MOST science team will use the satellite to conduct long-duration ste ...
... Abstract. The MOST (Microvariability and Oscillations of STars) astronomy mission under the Canadian Space Agency’s Small Payloads Program is Canada’s first space science microsatellite and is scheduled to launch in June 2003. The MOST science team will use the satellite to conduct long-duration ste ...
Lesson 4 - Scientist in Residence Program
... Stars like humans come in different sizes and colours. However, unlike people a star’s colour and brightness is highly dependent on its size. We can get clues about how hot a star is and a star’s age from a star’s colour. Stars are often classified based on size, temperature and spectra (or its colo ...
... Stars like humans come in different sizes and colours. However, unlike people a star’s colour and brightness is highly dependent on its size. We can get clues about how hot a star is and a star’s age from a star’s colour. Stars are often classified based on size, temperature and spectra (or its colo ...
The Celestial Sphere
... He was the greatest naked eye observer in history and had a clear idea about the maximal error in his observations. Based on that, he could compute how far away the stars had to be in order to not show any parallax. This distance was “astronomical” and made no sense to most people at the time, so he ...
... He was the greatest naked eye observer in history and had a clear idea about the maximal error in his observations. Based on that, he could compute how far away the stars had to be in order to not show any parallax. This distance was “astronomical” and made no sense to most people at the time, so he ...
A summary of the conference
... the Sun and stars is less accessible to scientific investigation than any other region of the universe. Our telescopes may probe farther and farther into the depths of space; but how can we ever obtain certain knowledge of that which is being hidden behind substantial barriers? What appliance can pi ...
... the Sun and stars is less accessible to scientific investigation than any other region of the universe. Our telescopes may probe farther and farther into the depths of space; but how can we ever obtain certain knowledge of that which is being hidden behind substantial barriers? What appliance can pi ...
aas_gdemessieres - Astronomy at Swarthmore College
... The MCWS model: A large-scale magnetic field can channel ionized wind material toward the magnetic equator, where it collides with material from the opposite hemisphere, leading to a strong standing shock and generating X-rays. (See udDoula & Owocki, poster 135.07.) t Sco is an unusually young star ...
... The MCWS model: A large-scale magnetic field can channel ionized wind material toward the magnetic equator, where it collides with material from the opposite hemisphere, leading to a strong standing shock and generating X-rays. (See udDoula & Owocki, poster 135.07.) t Sco is an unusually young star ...
Final Study Guide
... 7. Describe Jupiter in terms of size, composition, rotation rate, atmosphere, thermal radiations, and magnetic field. 8. Describe the evolution and deaths of the most massive stars, including Type II supernovae and supernova remnants. 9. Discuss the differences between population I and population II ...
... 7. Describe Jupiter in terms of size, composition, rotation rate, atmosphere, thermal radiations, and magnetic field. 8. Describe the evolution and deaths of the most massive stars, including Type II supernovae and supernova remnants. 9. Discuss the differences between population I and population II ...
White Dwarfs
... fusion goes into re-expanding and cooling the core. Takes only a few seconds! This slows fusion, so star gets dimmer again. - Then stable He -> C burning. Still have H -> He shell burning ...
... fusion goes into re-expanding and cooling the core. Takes only a few seconds! This slows fusion, so star gets dimmer again. - Then stable He -> C burning. Still have H -> He shell burning ...
4-6 Script
... The sun is a star! Have all the students point to the sun and discuss how to explain it's location using the compass directions, and the vocabulary: horizon and zenith. Also explain how you could use degrees (0 degrees for the horizon, 90 for the zenith) to explain the height in the sky. Why can't w ...
... The sun is a star! Have all the students point to the sun and discuss how to explain it's location using the compass directions, and the vocabulary: horizon and zenith. Also explain how you could use degrees (0 degrees for the horizon, 90 for the zenith) to explain the height in the sky. Why can't w ...
Luminosity - U of L Class Index
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
... It would be only 1/3 as bright It would be only 1/6 as bright It would be only 1/9 as bright It would be three times brighter ...
Parallax - mjeffries
... • How can the measurement of the triangle be improved? 1. Make the base larger. 2. Measure the angle more accurately. ...
... • How can the measurement of the triangle be improved? 1. Make the base larger. 2. Measure the angle more accurately. ...
Annual report 2002 - Département d`Astrophysique, Géophysique et
... obtained from the observations. These data from ESO VLT are of excellent quality showing a very precise turnoff-point from the main sequence for the cluster's youngest stellar population. Application of these data in preliminary reductions of time-series data from the Danish 1.54m telescope at La Si ...
... obtained from the observations. These data from ESO VLT are of excellent quality showing a very precise turnoff-point from the main sequence for the cluster's youngest stellar population. Application of these data in preliminary reductions of time-series data from the Danish 1.54m telescope at La Si ...
Microlensing Studies in Crowded Fields
... buttable package, much higher focal plane coverage is possible. • Could double DQE, and increase filling factor from 0.17 to about 0.75. • Increase star imaging rates x6 or so. • Upgrade would cost ~$2-3 million, but take 2-3 years to design detectors. 7 May 2014: Cambridge Exoplanets Group ...
... buttable package, much higher focal plane coverage is possible. • Could double DQE, and increase filling factor from 0.17 to about 0.75. • Increase star imaging rates x6 or so. • Upgrade would cost ~$2-3 million, but take 2-3 years to design detectors. 7 May 2014: Cambridge Exoplanets Group ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.