Universe and Star Formation - White Plains Public Schools
... Death of 2. Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called p ...
... Death of 2. Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called p ...
From Earth to the Galaxies
... astronomy once we journey outside the solar system. For example, the star closest to our Sun, Alpha Centauri, is located more than 40,000,000,000,000 km from our star. It’s much easier to write four light years (or 4 ly). Likewise, our Galaxy, the Milky Way, is 100,000 light years across. The same f ...
... astronomy once we journey outside the solar system. For example, the star closest to our Sun, Alpha Centauri, is located more than 40,000,000,000,000 km from our star. It’s much easier to write four light years (or 4 ly). Likewise, our Galaxy, the Milky Way, is 100,000 light years across. The same f ...
Angular measurements
... b. [1] What is the solid angle subtended by a single Hubble telescope pixel? (Assume that the pixel is square.) c. If a polar orbiting satellite flying at an altitude of 800 km had an imaging system that was capable of the same angular resolution: i. [1] What would be the length of a single pixel on ...
... b. [1] What is the solid angle subtended by a single Hubble telescope pixel? (Assume that the pixel is square.) c. If a polar orbiting satellite flying at an altitude of 800 km had an imaging system that was capable of the same angular resolution: i. [1] What would be the length of a single pixel on ...
1.1 Stars in the Broader Context of Modern Astro
... The study of stars continues to be at the very core of modern astrophysics more than 5000 years since its inception. Astronomy may well be the oldest science, and when early bronze age man looked up at the night sky he or she saw mostly stars. The signs of the zodiac—the first attempt at classifying ...
... The study of stars continues to be at the very core of modern astrophysics more than 5000 years since its inception. Astronomy may well be the oldest science, and when early bronze age man looked up at the night sky he or she saw mostly stars. The signs of the zodiac—the first attempt at classifying ...
The evolution of spiral galaxies in clusters Kutdemir, Elif
... However, due to the high relative velocities, the duration of these interactions is significantly shorter than in the field (tencounter ≈ 108 yr). Tidal interactions between galaxies and the cluster potential well cause the gas in the disk to be driven to the galaxy center within (2 − 3) × 108 yrs w ...
... However, due to the high relative velocities, the duration of these interactions is significantly shorter than in the field (tencounter ≈ 108 yr). Tidal interactions between galaxies and the cluster potential well cause the gas in the disk to be driven to the galaxy center within (2 − 3) × 108 yrs w ...
Ch 28 Outline
... First stars formed, went through their life cycle and died, creating supernova leaving behind heavier elements that eventually provided the material to form our sun and the planets. ...
... First stars formed, went through their life cycle and died, creating supernova leaving behind heavier elements that eventually provided the material to form our sun and the planets. ...
Volcanoes and Igneous Activity Earth
... Death of Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plan ...
... Death of Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plan ...
Star and Galaxies
... Death of Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plan ...
... Death of Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, medium-mass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plan ...
Blowing Bubbles in Space: The Birth and Death of Practically
... causing a double vortex that moves outward with great violence. “ ...
... causing a double vortex that moves outward with great violence. “ ...
angles_telescopes
... surface (angular sizes of a few arc minutes) • To increase Moon from “actual size” to “fist size” requires magnification of 10 (typical of binoculars) – with binoculars, can easily see shapes/shading on Moon’s surface (angular sizes of 10’s of arcseconds) • To see further detail you can use a small ...
... surface (angular sizes of a few arc minutes) • To increase Moon from “actual size” to “fist size” requires magnification of 10 (typical of binoculars) – with binoculars, can easily see shapes/shading on Moon’s surface (angular sizes of 10’s of arcseconds) • To see further detail you can use a small ...
Historical Overview of the Universe
... elements that become released via mass loss of red giants or in supernova explosions of the massive stars or binary systems. Numerous collisions among the first stellar systems trigger further star-formation processes and larger systems are built by the merging of smaller systems. After many billion ...
... elements that become released via mass loss of red giants or in supernova explosions of the massive stars or binary systems. Numerous collisions among the first stellar systems trigger further star-formation processes and larger systems are built by the merging of smaller systems. After many billion ...
Light and Telescope
... For high-resolution (super-sharp) observations, or for observations of very faint sources (i.e. to avoid the glare of the Earth’s atmospherer) either space telescopes or very advanced technologies (adaptive optics) are required. ...
... For high-resolution (super-sharp) observations, or for observations of very faint sources (i.e. to avoid the glare of the Earth’s atmospherer) either space telescopes or very advanced technologies (adaptive optics) are required. ...
UNIT VIII/B: THE EARTH IN SPACE – STARS AND GALAXIES
... 21,000,000,000,000,000,000 km. This is a number so large that it becomes hard to write and hard to interpret. So astronomers use other units of distance. d. In our solar system, we tend to describe distances in terms of the Astronomical Unit (AU). The AU is defined as the average distance between th ...
... 21,000,000,000,000,000,000 km. This is a number so large that it becomes hard to write and hard to interpret. So astronomers use other units of distance. d. In our solar system, we tend to describe distances in terms of the Astronomical Unit (AU). The AU is defined as the average distance between th ...
Here
... • Now you need to determine the positions of the target and your reference star on all images and to perform aperture photometry of the target and reference star on all images via the script “photo.prg”. The script basically uses two MIDAS-commands. One is “center/gauss” which you will use interact ...
... • Now you need to determine the positions of the target and your reference star on all images and to perform aperture photometry of the target and reference star on all images via the script “photo.prg”. The script basically uses two MIDAS-commands. One is “center/gauss” which you will use interact ...
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.