Practical cosmology with the Local Volume galaxies
... of the formation and subsequent development of the Universe depends on the outcome of various tests of cosmological models, each of which depends in some way on knowledge of distances». This sentence was premised by Allan Sandage (1988) to his «Atlas of Galaxies Useful for Measuring the Cosmological ...
... of the formation and subsequent development of the Universe depends on the outcome of various tests of cosmological models, each of which depends in some way on knowledge of distances». This sentence was premised by Allan Sandage (1988) to his «Atlas of Galaxies Useful for Measuring the Cosmological ...
What we will do today:
... • It is expanding in all directions with the space between each galaxy increasing as they move away from each other • “as fast as it can go, at the speed of light” – this lyric is wrong as it suggests a constant speed however the expansion is actually accelerating. • “12 million miles a minute” - us ...
... • It is expanding in all directions with the space between each galaxy increasing as they move away from each other • “as fast as it can go, at the speed of light” – this lyric is wrong as it suggests a constant speed however the expansion is actually accelerating. • “12 million miles a minute” - us ...
Vampy Astronomy Syllabus
... Vampy Astronomy Syllabus This course is intended to be an accelerated introduction to important concepts in astronomy and will cover topics related to both observational astronomy and physical astronomy. While some of you may have some astronomyrelated experience, the assumption is that each student ...
... Vampy Astronomy Syllabus This course is intended to be an accelerated introduction to important concepts in astronomy and will cover topics related to both observational astronomy and physical astronomy. While some of you may have some astronomyrelated experience, the assumption is that each student ...
Milky Way
... Radio Observations of Our Galaxy • Because of all the dust and gas in our Galaxy, longer wavelength observations are key. • Radio observations are very important for this reason. But where does radio come from? • Hydrogen spin-flip transition: emits a 21 cm photon! • Molecules: water (H2O), ammonia ...
... Radio Observations of Our Galaxy • Because of all the dust and gas in our Galaxy, longer wavelength observations are key. • Radio observations are very important for this reason. But where does radio come from? • Hydrogen spin-flip transition: emits a 21 cm photon! • Molecules: water (H2O), ammonia ...
ch16 b - Manasquan Public Schools
... premise that nothing but an “atom” existed before the Big Bang. ...
... premise that nothing but an “atom” existed before the Big Bang. ...
SUMSS - 京都大学
... • Radio LF for star-forming galaxies implies that galaxies with SFR > 30 Msun/yr are far more common than Ha surveys suggest, and may account for up to 40% of the local star-formation density. • Dust obscuration in star-forming regions could lead to under-estimate of Ha line strength. • Deep VLA stu ...
... • Radio LF for star-forming galaxies implies that galaxies with SFR > 30 Msun/yr are far more common than Ha surveys suggest, and may account for up to 40% of the local star-formation density. • Dust obscuration in star-forming regions could lead to under-estimate of Ha line strength. • Deep VLA stu ...
THE BALTIMORE SUN, Feb. 3, 2004, "Hubble sees key elements in
... Osiris was discovered in 1999, one of more than 100 planets that have been detected circling stars beyond our solar system. Its sun-like star is about 150 light-years from Earth, visible with binoculars in the constellation Pegasus. Officially dubbed HD 209458b, the planet could only be detected bec ...
... Osiris was discovered in 1999, one of more than 100 planets that have been detected circling stars beyond our solar system. Its sun-like star is about 150 light-years from Earth, visible with binoculars in the constellation Pegasus. Officially dubbed HD 209458b, the planet could only be detected bec ...
Astronomy Review (Cope) 64KB Jun 09 2013 08:13:01 PM
... 18. Starting with the speed of light being 3.00 x 10 meters per second (or 300,000 km per second), calculate how far light will travel in one (365 day) year. Stars ...
... 18. Starting with the speed of light being 3.00 x 10 meters per second (or 300,000 km per second), calculate how far light will travel in one (365 day) year. Stars ...
Astronomy (stars, galaxies and the Universe)
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
Article: How Big is our Universe
... Credit: SOHO - ESA & NASA When we leave the solar system, we find our star and its planets are just one small part of the Milky Way galaxy. The Milky Way is a huge city of stars, so big that even at the speed of light, it would take 100,000 years to travel across it. All the stars in the night sky, ...
... Credit: SOHO - ESA & NASA When we leave the solar system, we find our star and its planets are just one small part of the Milky Way galaxy. The Milky Way is a huge city of stars, so big that even at the speed of light, it would take 100,000 years to travel across it. All the stars in the night sky, ...
Level :3ASS3-4 School Year: 2009/2010 English
... Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the Erath and the ...
... Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes also the satellites of the planets; numerous comets, asteroids, and meteoroids. The moon is the satellite rotating around the Erath and the ...
Goals of the day Clickers Order of Magnitude Astronomy
... A radio message from outer space arrived today which was sent from planet Buff on the day you were born. The friendly aliens sending you the birthday message live: ...
... A radio message from outer space arrived today which was sent from planet Buff on the day you were born. The friendly aliens sending you the birthday message live: ...
Birth, Age and the Future of the Universe
... In 1912 Vesto M. Slipher took the first spectra of what was then called spiral “nebulae” (now known to be galaxies). It was a tedious process with small telescopes and slow emulsions. He found the spectral lines shifted toward the red (Figure 1) and he concluded correctly that the objects were hence ...
... In 1912 Vesto M. Slipher took the first spectra of what was then called spiral “nebulae” (now known to be galaxies). It was a tedious process with small telescopes and slow emulsions. He found the spectral lines shifted toward the red (Figure 1) and he concluded correctly that the objects were hence ...
Astronomy 401 Lecture 1 Overview of the Universe 1 Class overview
... point in its interior. Solid angles can also be measured in square degrees: 1 sr = (180/π)2 square degrees. Note: Most astronomers use CGS (centimeter-gram-second) units, instead of the MKS (meter-kilogramsecond) units you are used to from physics classes. We will mostly use MKS units in this class, ...
... point in its interior. Solid angles can also be measured in square degrees: 1 sr = (180/π)2 square degrees. Note: Most astronomers use CGS (centimeter-gram-second) units, instead of the MKS (meter-kilogramsecond) units you are used to from physics classes. We will mostly use MKS units in this class, ...
Time From the Perspective of a Particle Physicist
... are remnants from the first few minutes after the Big Bang • To explore back to earlier times we use our understanding of physics • The earlier you go in time the hotter was the Universe. Particle accelerators can ...
... are remnants from the first few minutes after the Big Bang • To explore back to earlier times we use our understanding of physics • The earlier you go in time the hotter was the Universe. Particle accelerators can ...
Far Ultraviolet Spectroscopic Explorer
... a certain color of star or emission component of the gas. • Primary colors combine in places to show where multiple emissions are present. Crab Nebula July 4, 1054 AD (24 WFPC2 Fields in multiple filters stitched together into one picture!) ...
... a certain color of star or emission component of the gas. • Primary colors combine in places to show where multiple emissions are present. Crab Nebula July 4, 1054 AD (24 WFPC2 Fields in multiple filters stitched together into one picture!) ...
Goals of the day Clickers Order of Magnitude Astronomy
... A radio message from outer space arrived today which was sent from planet Buff on the day you were born. The friendly aliens sending you the birthday message live: ...
... A radio message from outer space arrived today which was sent from planet Buff on the day you were born. The friendly aliens sending you the birthday message live: ...
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.