31-2 - Fremont Peak Observatory
... that will be sited, the name was inappropriate. In one case, we still use a description coined in the 1700’s. In another case, the designation was so wrong that the term has been replaced. A nebula is an area of diffuse gas or dust. But from there the origin and properties of the nebula differ great ...
... that will be sited, the name was inappropriate. In one case, we still use a description coined in the 1700’s. In another case, the designation was so wrong that the term has been replaced. A nebula is an area of diffuse gas or dust. But from there the origin and properties of the nebula differ great ...
key for the HR Diagram Lab Handout
... questions about what they are seeing before getting to the answers! Many students will focus on color and be surprised that stars come in so many. These observations will likely also include temperature, brightness, and lifespan information. If your students are not familiar with or confident in sci ...
... questions about what they are seeing before getting to the answers! Many students will focus on color and be surprised that stars come in so many. These observations will likely also include temperature, brightness, and lifespan information. If your students are not familiar with or confident in sci ...
April - Magic Valley Astronomical Society
... and more may reveal its cigar-shaped profile surrounding circular core. Next, try for M99, just south of the kite's tail. It’s not significantly easier to see, glowing dimly at 10th magnitude. Can you spot it, as well? If you can, then try your luck with an even more challenging target. M100 is rate ...
... and more may reveal its cigar-shaped profile surrounding circular core. Next, try for M99, just south of the kite's tail. It’s not significantly easier to see, glowing dimly at 10th magnitude. Can you spot it, as well? If you can, then try your luck with an even more challenging target. M100 is rate ...
Sample Final
... Instructions: Answer the following questions without notes or the book. You can use calculators. Complete as many questions within 2 hours. Partial credit can be given for ...
... Instructions: Answer the following questions without notes or the book. You can use calculators. Complete as many questions within 2 hours. Partial credit can be given for ...
Devika kamath Institute of Astronomy, KU. Leuven, Belgium
... EVOLUTIONARY STATUS -PROGENY Sub-dwarf B stars Binary He WDs/ Cataclysmic Variables ...
... EVOLUTIONARY STATUS -PROGENY Sub-dwarf B stars Binary He WDs/ Cataclysmic Variables ...
Ecosystems, from life, to the Earth, to the Galaxy
... serves to hinder our appreciation of the true structure, which is that of a thin disk (a few hundred light years thick) full of gas and stars, enveloped in a roughly spherical halo, sparsely populated with stars. The spiral shape which attracts our attention, however, is where the galactic ecosystem ...
... serves to hinder our appreciation of the true structure, which is that of a thin disk (a few hundred light years thick) full of gas and stars, enveloped in a roughly spherical halo, sparsely populated with stars. The spiral shape which attracts our attention, however, is where the galactic ecosystem ...
proposed october viewing list
... CS = Carbon Star, * = Video imaging optional, ** = Video imaging recommended ...
... CS = Carbon Star, * = Video imaging optional, ** = Video imaging recommended ...
J: Chapter 4: Stars and Galaxies
... Parallax can be seen if you observe the same star when Earth is at two different points during its orbit around the Sun. The star’s position relative to more distant background stars will appear to change. Is star or farther from Earth? ...
... Parallax can be seen if you observe the same star when Earth is at two different points during its orbit around the Sun. The star’s position relative to more distant background stars will appear to change. Is star or farther from Earth? ...
The Milky Way Galaxy is Heading for a Major Cosmic Collision
... – It may even hit the Milky Way first (9% probability) – Or it could escape from the Local Group (7% probability) ...
... – It may even hit the Milky Way first (9% probability) – Or it could escape from the Local Group (7% probability) ...
Collisions with Comets and Asteroids
... deal of matter was thrown outward, beyond the orbits of Uranus and Neptune. Coalescing far from the sun, the comets were born cold, at temperatures as low as Ð260 degrees Celsius. They retained their volatile materials, the gas, ice and snow. Sometimes called dirty snowballs, these objects are usual ...
... deal of matter was thrown outward, beyond the orbits of Uranus and Neptune. Coalescing far from the sun, the comets were born cold, at temperatures as low as Ð260 degrees Celsius. They retained their volatile materials, the gas, ice and snow. Sometimes called dirty snowballs, these objects are usual ...
Document
... • US participation in Euclid has been on and off several times. Overall, (arguably) not a positive interaction. • US decadal plan indicated number 1 priority would be a dark energy mission more ambitious than Euclid to come soon after – WFIRST. • But NASA was (is?) in big trouble with the cost overr ...
... • US participation in Euclid has been on and off several times. Overall, (arguably) not a positive interaction. • US decadal plan indicated number 1 priority would be a dark energy mission more ambitious than Euclid to come soon after – WFIRST. • But NASA was (is?) in big trouble with the cost overr ...
chapter16StarBirth
... – Stars greater than about 150MSun would be so luminous that radiation pressure would blow ...
... – Stars greater than about 150MSun would be so luminous that radiation pressure would blow ...
THE HR DIAGRAM
... Late in the nineteenth century, astronomers had tools that revealed a great deal about stars. By that time, advances in telescope design and photographic emulsions were becoming mature. They were able to take spectral images of stars which revealed their composition and th ...
... Late in the nineteenth century, astronomers had tools that revealed a great deal about stars. By that time, advances in telescope design and photographic emulsions were becoming mature. They were able to take spectral images of stars which revealed their composition and th ...
Chapter 15, Galaxies
... Because the mass of white dwarfs when they explode as supernovae is always around 1.0 M⊙, its luminosity is very consistent, and can be used as a standard candle for the measurement of distance to distant galaxies (Chapter 15). The amount of energy produced by white dwarf supernovae and massive star ...
... Because the mass of white dwarfs when they explode as supernovae is always around 1.0 M⊙, its luminosity is very consistent, and can be used as a standard candle for the measurement of distance to distant galaxies (Chapter 15). The amount of energy produced by white dwarf supernovae and massive star ...
The Young Exoplanet Transit Initiative (YETI)
... We present the Young Exoplanet Transit Initiative (YETI), in which we use several 0.2 to 2.6-m telescopes around the world to monitor continuously young (≤100 Myr), nearby (≤1 kpc) stellar clusters mainly to detect young transiting planets (and to study other variability phenomena on time-scales fro ...
... We present the Young Exoplanet Transit Initiative (YETI), in which we use several 0.2 to 2.6-m telescopes around the world to monitor continuously young (≤100 Myr), nearby (≤1 kpc) stellar clusters mainly to detect young transiting planets (and to study other variability phenomena on time-scales fro ...
Titan`s Methane Weather
... is that methane is very absorbing at certain wavelengths. At these wavelengths there is no hope of probing deeply into Titan’s atmosphere, but in the narrow wavelength “windows” between methane absorption bands, observers could probe all the way to the surface. This led several observing teams to us ...
... is that methane is very absorbing at certain wavelengths. At these wavelengths there is no hope of probing deeply into Titan’s atmosphere, but in the narrow wavelength “windows” between methane absorption bands, observers could probe all the way to the surface. This led several observing teams to us ...
CHIRON – A Fiber Fed Spectrometer for Precise Radial Velocities
... old large R2 echelle during the first year after commissioning. However this grating had a measured peak efficiency of about 55%. This grating was replaced during the CHIRON upgrade with a more efficient grating with protected silver coating.4 The new grating was procured from Richardson Labs/Newpor ...
... old large R2 echelle during the first year after commissioning. However this grating had a measured peak efficiency of about 55%. This grating was replaced during the CHIRON upgrade with a more efficient grating with protected silver coating.4 The new grating was procured from Richardson Labs/Newpor ...
Chemical abundances and winds of massive stars in M31: a Btype
... achieved by observing HR4074 within an air mass of 0.10 from HD 92809. A standard data reduction was again carried out with IRAF. These observations were supplemented by high resolution (HIRES), International Ultraviolet Explorer (IUE ), large aperture, short-(SWP) and long-wavelength (LWP, LWR) ult ...
... achieved by observing HR4074 within an air mass of 0.10 from HD 92809. A standard data reduction was again carried out with IRAF. These observations were supplemented by high resolution (HIRES), International Ultraviolet Explorer (IUE ), large aperture, short-(SWP) and long-wavelength (LWP, LWR) ult ...
FREE Sample Here
... In the critical analysis of an idea, it can be helpful to exaggerate the importance of a single factor. Doing so not only reveals the effect of that factor but can also reveal the inner workings of the process itself. Earth’s orbit is nearly circular, so its distance from the sun varies by only abou ...
... In the critical analysis of an idea, it can be helpful to exaggerate the importance of a single factor. Doing so not only reveals the effect of that factor but can also reveal the inner workings of the process itself. Earth’s orbit is nearly circular, so its distance from the sun varies by only abou ...
Photometric analysis of the globular cluster NGC5466
... show clearly the position of NGC5466 (Fig. 2). NGC5466 is also one of the least dense known glob- ...
... show clearly the position of NGC5466 (Fig. 2). NGC5466 is also one of the least dense known glob- ...
Galileo`s Observation of Neptune 1612-1613
... poetical terms. The variations of the visible phase of Venus and the correlations with the observed size of the planet in the eyepiece of Galileo’s telescope could only be explained if Venus orbited the Sun and not Earth. Later, he discovered sunspots12 (as had many other people by then) and began d ...
... poetical terms. The variations of the visible phase of Venus and the correlations with the observed size of the planet in the eyepiece of Galileo’s telescope could only be explained if Venus orbited the Sun and not Earth. Later, he discovered sunspots12 (as had many other people by then) and began d ...
First firm spectral classification of an early-B PMS star
... may prevent matter from accreting (e.g., Keto et al. 2006; Krumholz et al. 2009). Given the short main-sequence lifetime of massive stars, the mass accretion rate must be high (up to ∼ 10−3 M¯ yr−1 , Hosokawa et al. 2010) to ensure that the star does not leave the main sequence before the accretion ...
... may prevent matter from accreting (e.g., Keto et al. 2006; Krumholz et al. 2009). Given the short main-sequence lifetime of massive stars, the mass accretion rate must be high (up to ∼ 10−3 M¯ yr−1 , Hosokawa et al. 2010) to ensure that the star does not leave the main sequence before the accretion ...
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.