Stars, Galaxies, and the Universe Section 1 Section 1
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
... from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear to move much. • Earth’s revolution around the sun cause ...
Think about the universe
... century allowed Earth-bound astronomers to see objects in the sky with much greater precision than ever before. Observations using telescopes showed that many different types of objects in the sky could be identified. These included single or double stars, groups of stars called galaxies, clusters o ...
... century allowed Earth-bound astronomers to see objects in the sky with much greater precision than ever before. Observations using telescopes showed that many different types of objects in the sky could be identified. These included single or double stars, groups of stars called galaxies, clusters o ...
Astronomy 100 Name(s):
... lab is designed to help you understand how the software works and what its capabilities are. Obtain a laptop computer from the cart (remember to leave the AC adapter in the cart), turn on the computer and, once the Windows desktop is displayed, click on “the Sky” icon along the bottom row or else th ...
... lab is designed to help you understand how the software works and what its capabilities are. Obtain a laptop computer from the cart (remember to leave the AC adapter in the cart), turn on the computer and, once the Windows desktop is displayed, click on “the Sky” icon along the bottom row or else th ...
Theory of the Infinite Universe
... process releases energy. Massive stars begin as a giant ball of burning hydrogen. Over time the composition of the massive star is converted into helium. The nucleosynthesis, or fusion of lighter ...
... process releases energy. Massive stars begin as a giant ball of burning hydrogen. Over time the composition of the massive star is converted into helium. The nucleosynthesis, or fusion of lighter ...
PowerPoint
... questions on the new material– Extraterrestrial life to the early Universe. Lecture and reading material are both included. My goal is to test for understanding of the concepts we have discussed, and how they fit together. • Study tips. We have covered a lot of material in a short time, so here are ...
... questions on the new material– Extraterrestrial life to the early Universe. Lecture and reading material are both included. My goal is to test for understanding of the concepts we have discussed, and how they fit together. • Study tips. We have covered a lot of material in a short time, so here are ...
Chapter 3 Notes
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
Volume 4 (Issue 3), March 2015
... number would be higher). Meteors of magnitude −5 or brighter – that is to say, appreciably more brilliant than Venus – are conventionally termed fireballs. Very occasional fireballs, such as those of 20 November 1758 and 18 August 1783, may far outshine the Moon. A meteor may enter the atmosphere at ...
... number would be higher). Meteors of magnitude −5 or brighter – that is to say, appreciably more brilliant than Venus – are conventionally termed fireballs. Very occasional fireballs, such as those of 20 November 1758 and 18 August 1783, may far outshine the Moon. A meteor may enter the atmosphere at ...
ASTR 511 (O’Connell) FALL 2003 DUE FRIDAY SEPTEMBER 19
... good choice in the fall. Center it in the finder and, using a low power eyepiece, check that it is in the main telescope field and centered. A-2 Switch to a medium high power eyepiece (e.g. 20 mm) and recenter the star exactly by strongly defocusing the image until it becomes a huge donut that fills ...
... good choice in the fall. Center it in the finder and, using a low power eyepiece, check that it is in the main telescope field and centered. A-2 Switch to a medium high power eyepiece (e.g. 20 mm) and recenter the star exactly by strongly defocusing the image until it becomes a huge donut that fills ...
Flatfielding chapter for Calibration Volumes
... Similar high precision high frequency flat fields can be obtained by dithering well-characterized calibration stars over the focal plane. But the large number of pixels on the SNAP focal plane, roughly half a billion, makes this approach very costly in time. There are also other significant advantag ...
... Similar high precision high frequency flat fields can be obtained by dithering well-characterized calibration stars over the focal plane. But the large number of pixels on the SNAP focal plane, roughly half a billion, makes this approach very costly in time. There are also other significant advantag ...
A Spectroscopically Confirmed Excess of 24 micron Sources in a
... to determine rest-frame absolute magnitudes (Vega) and Kcorrections. As input, we use the MAG− AUTO photometry from the g′ BV r′ R imaging and assumed minimum photometric uncertainties in each bandpass of 0.05 mag. The photometry has been corrected for foreground Galactic extinction using the Schleg ...
... to determine rest-frame absolute magnitudes (Vega) and Kcorrections. As input, we use the MAG− AUTO photometry from the g′ BV r′ R imaging and assumed minimum photometric uncertainties in each bandpass of 0.05 mag. The photometry has been corrected for foreground Galactic extinction using the Schleg ...
![arXiv:1505.07406v1 [hep-ph] 27 May 2015](http://s1.studyres.com/store/data/007750137_1-1343a5635a0dda57ac4b2d01226e2ce5-300x300.png)
Abstracts
... of X-ray observatories. Recent studies have also revealed that Seyfert cores are variable at radio wavelengths, however, there are very few Seyfert radio variability investigations, and this is one of the first that also investigates the radio/X-ray (jet/disc) coupling. It has been known for some ti ...
... of X-ray observatories. Recent studies have also revealed that Seyfert cores are variable at radio wavelengths, however, there are very few Seyfert radio variability investigations, and this is one of the first that also investigates the radio/X-ray (jet/disc) coupling. It has been known for some ti ...
Grades 9-12 - pdf - McDonald Observatory
... the longest wavelengths as the color red. Compared to a spectrum taken in an Earth-bound laboratory, any atomic absorption or emission features in the galaxy’s spectrum will appear at longer wavelengths. The features look as if they shifted to the red end of the spectrum. Astronomers say that these ...
... the longest wavelengths as the color red. Compared to a spectrum taken in an Earth-bound laboratory, any atomic absorption or emission features in the galaxy’s spectrum will appear at longer wavelengths. The features look as if they shifted to the red end of the spectrum. Astronomers say that these ...
Kinds of Stars
... Hot stars are Blue, Cooler stars are Red. Made mainly of Hydrogen and Helium. Our sun is 70 % Hydrogen/ 28 % Helium. Each star has its own spectrum. (Fingerprint) ...
... Hot stars are Blue, Cooler stars are Red. Made mainly of Hydrogen and Helium. Our sun is 70 % Hydrogen/ 28 % Helium. Each star has its own spectrum. (Fingerprint) ...
Higher Doppler Effect and Red Shift Questions
... 7. Stars or Galaxies moving away from us is known as a Red Shift. Stars or Galaxies moving towards us is known as a Blue Shift. Explain using the Doppler Effect how these names have been given in each case. ...
... 7. Stars or Galaxies moving away from us is known as a Red Shift. Stars or Galaxies moving towards us is known as a Blue Shift. Explain using the Doppler Effect how these names have been given in each case. ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.