Unit 8 Chapter 30
... It is believed that stars probably formed in similar ways. The theory is that a cloud of dust (a nebula) contracts with most of the material going to the center to form a star. The dust is mainly Hydrogen (99%) with other elements and compounds like silicon carbide, graphite diamonds and nitrogen. T ...
... It is believed that stars probably formed in similar ways. The theory is that a cloud of dust (a nebula) contracts with most of the material going to the center to form a star. The dust is mainly Hydrogen (99%) with other elements and compounds like silicon carbide, graphite diamonds and nitrogen. T ...
Document
... them → know their distance (with ~6% uncertainty) • Bright (V ~ 21 at 110 kpc) • Variable stars (P ~ 0.6 day) with distinct light curves ( ~1 mag amplitude) → easily identifiable ...
... them → know their distance (with ~6% uncertainty) • Bright (V ~ 21 at 110 kpc) • Variable stars (P ~ 0.6 day) with distinct light curves ( ~1 mag amplitude) → easily identifiable ...
Sky, Celestial Sphere and Constellations
... When star light travels through the atmosphere light gets slightly refracted (changes direction) as it go from one air layer to another of different densities.. When there is turbulence in the atmosphere refraction is not uniform or steady, changes from moment to moment, changing the direction of li ...
... When star light travels through the atmosphere light gets slightly refracted (changes direction) as it go from one air layer to another of different densities.. When there is turbulence in the atmosphere refraction is not uniform or steady, changes from moment to moment, changing the direction of li ...
society journal - Auckland Astronomical Society
... the Rosetta Mission to orbit the comet 67P/Churyumov-Gerasimenko and then land a probe (Philae) on it. The first film covered the development of the project, difficulties with the mission and discoveries made by the spacecraft so far. Initial difficulties with the project and delays mean a change of ...
... the Rosetta Mission to orbit the comet 67P/Churyumov-Gerasimenko and then land a probe (Philae) on it. The first film covered the development of the project, difficulties with the mission and discoveries made by the spacecraft so far. Initial difficulties with the project and delays mean a change of ...
astronomy
... Discuss the nature of electromagnetic radiation, and tell how that radiation transfers energy and information through interstellar space. List the major regions of the electromagnetic spectrum and explain how the properties of the Earth’s atmosphere affect our ability to make astronomical observatio ...
... Discuss the nature of electromagnetic radiation, and tell how that radiation transfers energy and information through interstellar space. List the major regions of the electromagnetic spectrum and explain how the properties of the Earth’s atmosphere affect our ability to make astronomical observatio ...
aaswinter07ppt
... • The detailed light curve is unlike that of a supernova, nova, or any other type of variable star (1,2,3). During the outburst, V838 Mon was found to have a maximum effective temperature of an A – F star at the optical maximum in February 2002. The effective temperature then cooled to a very low ~8 ...
... • The detailed light curve is unlike that of a supernova, nova, or any other type of variable star (1,2,3). During the outburst, V838 Mon was found to have a maximum effective temperature of an A – F star at the optical maximum in February 2002. The effective temperature then cooled to a very low ~8 ...
MSL Electromagnetic Spectrum
... Doppler Effect Summary Motion toward or away from an observer causes a shift in the observed wavelength of light: • blueshift (shorter wavelength) motion toward you ...
... Doppler Effect Summary Motion toward or away from an observer causes a shift in the observed wavelength of light: • blueshift (shorter wavelength) motion toward you ...
Local group
... which live 'forever', • massive stars inject into ISM a mass pDMtotal of heavy elements (p depends on the IMF and the yield of SN- normalized to total mass of stars). • Assumptions: galaxies gas is well mixed, no infall or outflow, high mass stars return metals to ISM faster than time to form new st ...
... which live 'forever', • massive stars inject into ISM a mass pDMtotal of heavy elements (p depends on the IMF and the yield of SN- normalized to total mass of stars). • Assumptions: galaxies gas is well mixed, no infall or outflow, high mass stars return metals to ISM faster than time to form new st ...
Astrophysics
... • Most stars are too far away to measure their distance by parallax. If we could find the luminosity of a star by some means not involving its distance, then we could turn things around and find the distance from its apparent brightness. Later we will see that there is a way to find the luminosity! ...
... • Most stars are too far away to measure their distance by parallax. If we could find the luminosity of a star by some means not involving its distance, then we could turn things around and find the distance from its apparent brightness. Later we will see that there is a way to find the luminosity! ...
Introduction
... volume and mass limited, and includes galaxies of all morphological types inhabiting a range of different environments, from galaxies in the dense core of the Virgo cluster to relatively isolated systems. As such, the sample is ideal for disentangling the internal and environmental processes driving ...
... volume and mass limited, and includes galaxies of all morphological types inhabiting a range of different environments, from galaxies in the dense core of the Virgo cluster to relatively isolated systems. As such, the sample is ideal for disentangling the internal and environmental processes driving ...
Gravitational Waves – detectors, sources & science
... • Gravitational waves are one of the most interesting predictions of general relativity, and provide an unprecedented probe of extreme gravity environments in the Universe. • There are many potential sources of gravitational waves for our detectors, ranging from binary star systems to supermassive b ...
... • Gravitational waves are one of the most interesting predictions of general relativity, and provide an unprecedented probe of extreme gravity environments in the Universe. • There are many potential sources of gravitational waves for our detectors, ranging from binary star systems to supermassive b ...
The Warrumbungle Observer The Warrumbungle Observer
... Uranus is located 30 degrees lower in the sky than Neptune in Pisces. This appears as a greenish star with a pair of binoculars. The planet has an interesting name, much the joke for some, but has had an identity crisis over the years. Its discoverer William Herschel named it after King George III o ...
... Uranus is located 30 degrees lower in the sky than Neptune in Pisces. This appears as a greenish star with a pair of binoculars. The planet has an interesting name, much the joke for some, but has had an identity crisis over the years. Its discoverer William Herschel named it after King George III o ...
PPT - IAC
... - low temperatures (T < 50000 K; to keep the Hydrogen neutral). Depending on the DM halo mass, mixed with hot gas (T > 106 K). - gas infall (but infall and outflows extremely difficult to distinguish), expected to occur in the plane of the galaxy - low metallicity (it is gas from the cosmic web gas) ...
... - low temperatures (T < 50000 K; to keep the Hydrogen neutral). Depending on the DM halo mass, mixed with hot gas (T > 106 K). - gas infall (but infall and outflows extremely difficult to distinguish), expected to occur in the plane of the galaxy - low metallicity (it is gas from the cosmic web gas) ...
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.