The measure of Cosmological distances
... Found new planet (Uranus)Discover Infra-Red lightFirst map of the sky: Idea: All the stars are the same. Therefore, bright stars are closer. ...
... Found new planet (Uranus)Discover Infra-Red lightFirst map of the sky: Idea: All the stars are the same. Therefore, bright stars are closer. ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
... uncover a cluster of galaxies in the initial stages of development, making it the most distant such grouping ever observed in the early Universe. Five galaxies, clustered together, are so distant that their light has taken 13.1 billion years to reach us. These galaxies are among the brightest galaxi ...
... uncover a cluster of galaxies in the initial stages of development, making it the most distant such grouping ever observed in the early Universe. Five galaxies, clustered together, are so distant that their light has taken 13.1 billion years to reach us. These galaxies are among the brightest galaxi ...
Astronomical Ideas Fall 2012 Homework 3 Solutions 1. How bright
... reasons, but must say something about the image quality benefit to the telescope being above the atmosphere/in orbit]. The JWST has several differences from HST. The aperture will be much larger (6.5m versus 2.5m), the wavelength of observation will be in the infrared (HST primarily observes at opti ...
... reasons, but must say something about the image quality benefit to the telescope being above the atmosphere/in orbit]. The JWST has several differences from HST. The aperture will be much larger (6.5m versus 2.5m), the wavelength of observation will be in the infrared (HST primarily observes at opti ...
Irregular Galaxies
... without a telescope. • When a telescope is used to view them, the different stars begin to be visible. ...
... without a telescope. • When a telescope is used to view them, the different stars begin to be visible. ...
PH607lec12
... speed of light, something not permitted by the laws of physics. In fact, redshifts larger than 1 are possible, and are observed. For example, if an object has a velocity near the speed of light we have to use the "relativistic Doppler shift formula" ...
... speed of light, something not permitted by the laws of physics. In fact, redshifts larger than 1 are possible, and are observed. For example, if an object has a velocity near the speed of light we have to use the "relativistic Doppler shift formula" ...
What are your ideas about The Universe? - Harvard
... 4.5 billion years old. But the Hubble “deep-field” galaxies are among the most ancient and distant objects we can see in the sky. The light from them has taken about 10 billion years to reach us. So they were born long before the Sun. On the other hand, the Hubble deep field galaxies are young! Beca ...
... 4.5 billion years old. But the Hubble “deep-field” galaxies are among the most ancient and distant objects we can see in the sky. The light from them has taken about 10 billion years to reach us. So they were born long before the Sun. On the other hand, the Hubble deep field galaxies are young! Beca ...
Integrative Studies 410 Our Place in the Universe
... • Measured the distance to Andromeda to be 1 million Ly (modern value: 2.2 mill. Ly) • Conclusion: it is 20 times more distant than the milky way’s radius Extragalacticity! Shapley’s theory falsified! ...
... • Measured the distance to Andromeda to be 1 million Ly (modern value: 2.2 mill. Ly) • Conclusion: it is 20 times more distant than the milky way’s radius Extragalacticity! Shapley’s theory falsified! ...
Steve Holmes - KWFN October 22 2012 speaker
... tomorrow, in reality the event would have taken place in 5488 BC. Steve’s long-time passion for astronomy grew into astrophotography: he delighted in seeing the night sky, but he wanted to be able to record his observations so that they could be compared with those taken at other times, as well as s ...
... tomorrow, in reality the event would have taken place in 5488 BC. Steve’s long-time passion for astronomy grew into astrophotography: he delighted in seeing the night sky, but he wanted to be able to record his observations so that they could be compared with those taken at other times, as well as s ...
The New Cosmology: Our Expanding Universe
... are from us, the faster they move away. This is the Hubble Law; the ration between distance and velocity is 0.72, and is the so-called Hubble Constant. THE UNIVERSE IS EXPANDING The universe expands, like if you blow up a balloon, or set a raisin bread to rise. In the form of the raisins, you have c ...
... are from us, the faster they move away. This is the Hubble Law; the ration between distance and velocity is 0.72, and is the so-called Hubble Constant. THE UNIVERSE IS EXPANDING The universe expands, like if you blow up a balloon, or set a raisin bread to rise. In the form of the raisins, you have c ...
The New Cosmology: Our Expanding Universe
... are from us, the faster they move away. This is the Hubble Law; the ration between distance and velocity is 0.72, and is the so-called Hubble Constant. THE UNIVERSE IS EXPANDING The universe expands, like if you blow up a balloon, or set a raisin bread to rise. In the form of the raisins, you have c ...
... are from us, the faster they move away. This is the Hubble Law; the ration between distance and velocity is 0.72, and is the so-called Hubble Constant. THE UNIVERSE IS EXPANDING The universe expands, like if you blow up a balloon, or set a raisin bread to rise. In the form of the raisins, you have c ...
Slide 1 - Hoover12
... • This image is a quick look at the sky through the Infrared Array Camera (IRAC). • The 5’ x 5’ image was taken in a low Galactic latitude region in the constellation Perseus. It results from 100 seconds of exposure time with the short-wavelength (3.6 micron) array. ...
... • This image is a quick look at the sky through the Infrared Array Camera (IRAC). • The 5’ x 5’ image was taken in a low Galactic latitude region in the constellation Perseus. It results from 100 seconds of exposure time with the short-wavelength (3.6 micron) array. ...
The Whole Darn Thing!
... The seasons are a consequence of Earth’s 23.5o tilt. Tides are caused by differential gravity. The Moon revolves (one month), and also rotates so the same side is always facing us. The Moon’s synodic period is one month; the sidereal period is only 27.5 days. Eclipses would happen every month if the ...
... The seasons are a consequence of Earth’s 23.5o tilt. Tides are caused by differential gravity. The Moon revolves (one month), and also rotates so the same side is always facing us. The Moon’s synodic period is one month; the sidereal period is only 27.5 days. Eclipses would happen every month if the ...
implication on the mass and
... Are massive spirals already formed at z~ 1 ? ! Connection between LIRGs and disks (z>0.4) (HST morphologies and color maps) : 40% of LIRGs are large disks (Zheng et al, 2004, A&A) ! Lilly et al (1998) large disk sample (rdisk > 4 h50-1 kpc) at 0.5 < z < 1: 32 (+/-13)% of them are LIRGs ! LIRGs have ...
... Are massive spirals already formed at z~ 1 ? ! Connection between LIRGs and disks (z>0.4) (HST morphologies and color maps) : 40% of LIRGs are large disks (Zheng et al, 2004, A&A) ! Lilly et al (1998) large disk sample (rdisk > 4 h50-1 kpc) at 0.5 < z < 1: 32 (+/-13)% of them are LIRGs ! LIRGs have ...
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.