Lectures 19-20 The Milky Way Galaxy
... The Morphology of the Galaxy Structure of Thin and Thick Disks Galactic Disk has two major components, the thin disk, and the thick disk. Thin disk: composed of young stars, dust, and gas, with Hnthin = 350 pc (youngest stars found with scale height of 35-90 pc). Thick disk: older stars with a scal ...
... The Morphology of the Galaxy Structure of Thin and Thick Disks Galactic Disk has two major components, the thin disk, and the thick disk. Thin disk: composed of young stars, dust, and gas, with Hnthin = 350 pc (youngest stars found with scale height of 35-90 pc). Thick disk: older stars with a scal ...
Jupiter - Mrs Foos, Room 10
... the Galilean satellites because they were first seen in 1610 by the astronomer Galileo Galilei. In 1979, NASA discovered that Jupiter has a set of rings, which are made up of cosmic dust and other small particles orbiting the planet. However, the rings are too faint to be seen from Earth. ...
... the Galilean satellites because they were first seen in 1610 by the astronomer Galileo Galilei. In 1979, NASA discovered that Jupiter has a set of rings, which are made up of cosmic dust and other small particles orbiting the planet. However, the rings are too faint to be seen from Earth. ...
POISE AND EVOLUTION OF THE GALAXY : STRUCTURE ,
... luminous stars ; with a similar width, of the order of 1000 light-years, at least [Fig. 1a]. Such a reconstituted shape is by no way exceptional : quite a lot of galaxies, probably spiral as seen edgeon, in profile, indeed, display such a sandwich structure in direct observation, through the lengthy ...
... luminous stars ; with a similar width, of the order of 1000 light-years, at least [Fig. 1a]. Such a reconstituted shape is by no way exceptional : quite a lot of galaxies, probably spiral as seen edgeon, in profile, indeed, display such a sandwich structure in direct observation, through the lengthy ...
Estudio de Cúmulos de Galaxias en el Sloan Digital Sky Survey
... Baugh et al. 2005: - Reproduce the z=3 LF of LBGs - Reproduce the number of SMGs. ...
... Baugh et al. 2005: - Reproduce the z=3 LF of LBGs - Reproduce the number of SMGs. ...
PSC100 Summary Chapters 1 to Chapter 9
... Although the Sun, the Moon, and the planets appear brighter and usually capture our initial attention, it is the patterns of stars that make up the bulk of the view that we have when we observe the night sky. It is no wonder that some of the oldest knowledge and records of scientific observation are ...
... Although the Sun, the Moon, and the planets appear brighter and usually capture our initial attention, it is the patterns of stars that make up the bulk of the view that we have when we observe the night sky. It is no wonder that some of the oldest knowledge and records of scientific observation are ...
Wide-eyed Telescope Finds its First Transiting
... Embargoed until Tuesday 26th September 00:02 a.m. BST=GMT+1hr The SuperWASP planetary transit telescopes The SuperWASP (Wide Angle Search for Planets) project operates two camera systems – one in La Palma in the Canary Islands and one at Sutherland Observatory, South Africa. These telescopes have a ...
... Embargoed until Tuesday 26th September 00:02 a.m. BST=GMT+1hr The SuperWASP planetary transit telescopes The SuperWASP (Wide Angle Search for Planets) project operates two camera systems – one in La Palma in the Canary Islands and one at Sutherland Observatory, South Africa. These telescopes have a ...
PH607lec12
... Many galaxies seem to be colliding or merging while others seem distorted - clear evidence that cluster galaxies commonly interact. Over time, the galaxy interactions are likely to affect the content of the cluster itself. Researchers believe that the Hercules Cluster is significantly similar to you ...
... Many galaxies seem to be colliding or merging while others seem distorted - clear evidence that cluster galaxies commonly interact. Over time, the galaxy interactions are likely to affect the content of the cluster itself. Researchers believe that the Hercules Cluster is significantly similar to you ...
Wide-eyed Telescope Finds its First Transiting
... Embargoed until Tuesday 26th September 00:02 a.m. BST=GMT+1hr The SuperWASP planetary transit telescopes The SuperWASP (Wide Angle Search for Planets) project operates two camera systems – one in La Palma in the Canary Islands and one at Sutherland Observatory, South Africa. These telescopes have a ...
... Embargoed until Tuesday 26th September 00:02 a.m. BST=GMT+1hr The SuperWASP planetary transit telescopes The SuperWASP (Wide Angle Search for Planets) project operates two camera systems – one in La Palma in the Canary Islands and one at Sutherland Observatory, South Africa. These telescopes have a ...
Dynamical models of the nucleus of M31
... • ~ 100 massive young stars found in the central parsec age » 6£ 106 yr; formation is a puzzle: • formation in situ from a disk? • disruption of an infalling cluster? • implied star-formation rate is so high that it must be episodic • line-of-sight velocities measured by Doppler shift and angular ve ...
... • ~ 100 massive young stars found in the central parsec age » 6£ 106 yr; formation is a puzzle: • formation in situ from a disk? • disruption of an infalling cluster? • implied star-formation rate is so high that it must be episodic • line-of-sight velocities measured by Doppler shift and angular ve ...
What we know about Jupiter
... But Jupiter is not the brightest of the planets, that record is held by Venus. However, Jupiter and Jupiter's brightness in the night sky is due to its Venus are very different in how they wander across enormous size. It is by far the biggest planet of the the sky. Nowadays we can explain that diffe ...
... But Jupiter is not the brightest of the planets, that record is held by Venus. However, Jupiter and Jupiter's brightness in the night sky is due to its Venus are very different in how they wander across enormous size. It is by far the biggest planet of the the sky. Nowadays we can explain that diffe ...
harvest09b - NMSU Astronomy
... (rest-frame velocity) Clear causal connection of “strong” CIV absorbers seen in QSO spectra with galaxies; I.e., C IV traces metal enriched gas in vicinity (80 kpc proper) of galaxies O VI absorption and z=3 galaxies For N(OVI) > 1013.5 cm-2, the OVI absorber temperatures, kinematics, and rate of ...
... (rest-frame velocity) Clear causal connection of “strong” CIV absorbers seen in QSO spectra with galaxies; I.e., C IV traces metal enriched gas in vicinity (80 kpc proper) of galaxies O VI absorption and z=3 galaxies For N(OVI) > 1013.5 cm-2, the OVI absorber temperatures, kinematics, and rate of ...
Microlensing Studies in Crowded Fields
... • In a field such as Baade's Window, a single pointing of GravityCam will see approximately 0.5x106 stars with I<22. • With six pointings, around 3x106 stars in one hour. • The I=22 stars will have ~10,000 photons detected in 10 min, so with SNR ~ 80-100 after sky background correction. • With an op ...
... • In a field such as Baade's Window, a single pointing of GravityCam will see approximately 0.5x106 stars with I<22. • With six pointings, around 3x106 stars in one hour. • The I=22 stars will have ~10,000 photons detected in 10 min, so with SNR ~ 80-100 after sky background correction. • With an op ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.