The National Centre for Radio Astrophysics
... An important area of astronomical research in recent years has been the use of deep multi-wavelength studies of specific extragalactic fields to study in detail how galaxies and their stars and gas evolve through the age of the Universe. Radio and infrared imaging is especially important in this are ...
... An important area of astronomical research in recent years has been the use of deep multi-wavelength studies of specific extragalactic fields to study in detail how galaxies and their stars and gas evolve through the age of the Universe. Radio and infrared imaging is especially important in this are ...
14. The Milky Way Galaxy: A Spiral in Space
... • These objects are very close to the Galactic center. The orbit on the right of star S2 is the best fit; it assumes a central black hole of about 4 million solar masses. ...
... • These objects are very close to the Galactic center. The orbit on the right of star S2 is the best fit; it assumes a central black hole of about 4 million solar masses. ...
PEGASUS, THE FLYING HORSE Pegasus is a constellation in the
... with a redshift of 0.0027. It was discovered by musician-astronomer William Herschel in 1784 and was later one of the first nebulous objects to be described as "spiral" by William Parsons. Another of Pegasus's galaxies is NGC 7742, a Type 2 Seyfert galaxy. Located at a distance of 77 million light-y ...
... with a redshift of 0.0027. It was discovered by musician-astronomer William Herschel in 1784 and was later one of the first nebulous objects to be described as "spiral" by William Parsons. Another of Pegasus's galaxies is NGC 7742, a Type 2 Seyfert galaxy. Located at a distance of 77 million light-y ...
How do stars orbit in our galaxy?
... • The Milky Way Galaxy consists of a thin disk of stars about 100,000 lightyears in diameter with a central bulge and a spherical region called the halo that surrounds the entire disk. The disk also contains the gas and dust of the ...
... • The Milky Way Galaxy consists of a thin disk of stars about 100,000 lightyears in diameter with a central bulge and a spherical region called the halo that surrounds the entire disk. The disk also contains the gas and dust of the ...
151 - ESO
... The mythology of Andromeda Andromeda was the princess of Ethiopia, daughter of Cepheus and Cassiopeia. Cassiopeia was a boastful woman, and foolishly bragged that she was more beautiful than Juno (the queen of the gods, and the Nereids). In order to avenge the insult to his nymphs, Neptune sent a se ...
... The mythology of Andromeda Andromeda was the princess of Ethiopia, daughter of Cepheus and Cassiopeia. Cassiopeia was a boastful woman, and foolishly bragged that she was more beautiful than Juno (the queen of the gods, and the Nereids). In order to avenge the insult to his nymphs, Neptune sent a se ...
Feedback - Cambridge University Press
... This prediction can be tested in the Milky Way. We have combined the WMAP freefree map to find free-free emission regions and the associated star forming complexes seen in Spitzer GLIMPSE images. The free-free emission of a star cluster is provided primarily by stars with M∗ 40M ; since these star ...
... This prediction can be tested in the Milky Way. We have combined the WMAP freefree map to find free-free emission regions and the associated star forming complexes seen in Spitzer GLIMPSE images. The free-free emission of a star cluster is provided primarily by stars with M∗ 40M ; since these star ...
GRADE 12A: Physics 7
... • The nearest major galaxy to the Milky Way is the Andromeda galaxy (Andromeda nebula), which is also a spiral. • Even the nearest galaxy lies at a distance of a few million light-years. Light reaching us has been in transit for this time, so it carries information about the galaxy as it was a few m ...
... • The nearest major galaxy to the Milky Way is the Andromeda galaxy (Andromeda nebula), which is also a spiral. • Even the nearest galaxy lies at a distance of a few million light-years. Light reaching us has been in transit for this time, so it carries information about the galaxy as it was a few m ...
Studying the Universe Studying the Universe
... are more forms of radiation than the kind we can see—visible light. In 1864, James Clerk Maxwell showed that visible light is a form of electromagnetic radiation. Electromagnetic radiation includes all forms of energy that travel through space as waves. Each color of visible light represents a diffe ...
... are more forms of radiation than the kind we can see—visible light. In 1864, James Clerk Maxwell showed that visible light is a form of electromagnetic radiation. Electromagnetic radiation includes all forms of energy that travel through space as waves. Each color of visible light represents a diffe ...
The Magellan 20 Telescope Science Goals
... kinematics of the IGM becomes possible, mapping tenuous structures with densities down to the mean density of the universe. A combination with a traditional galaxy redshift survey of the same volume sampled by the lines of sight to the background galaxies would allow us to correlate the properties o ...
... kinematics of the IGM becomes possible, mapping tenuous structures with densities down to the mean density of the universe. A combination with a traditional galaxy redshift survey of the same volume sampled by the lines of sight to the background galaxies would allow us to correlate the properties o ...
First Light Sources at the End of the Dark Ages: Direct
... universe. These SNe are very luminous events, with rest-frame B-band luminosities as high as MB~-19 (Richardson et al. 2002). Moreover, SNe IIn are the most luminous SN type in the restframe UV, rendering them easier to detect at high redshift than any other SN type. Observationally, SNe IIn at z~6 ...
... universe. These SNe are very luminous events, with rest-frame B-band luminosities as high as MB~-19 (Richardson et al. 2002). Moreover, SNe IIn are the most luminous SN type in the restframe UV, rendering them easier to detect at high redshift than any other SN type. Observationally, SNe IIn at z~6 ...
SGL 9 NGC Galaxy magnitude 9/10 observing challenge Up for
... NGC Galaxy magnitude 9/10 observing challenge Up for something new? Done all those Messier galaxies? Why not work your way through this list of special magnitude 9/10 NGC galaxies? It is Friday the 4th April. It is 9.30pm and its dark and the sky is clear. Time to start. Due South, almost overhead i ...
... NGC Galaxy magnitude 9/10 observing challenge Up for something new? Done all those Messier galaxies? Why not work your way through this list of special magnitude 9/10 NGC galaxies? It is Friday the 4th April. It is 9.30pm and its dark and the sky is clear. Time to start. Due South, almost overhead i ...
VLT/FORS Surveys of Wolf-Rayet Stars beyond the
... core-collapse SN (Type II-P, Smartt et al. 2004). Unfortunately, WR stars are vis ually much fainter than RSG and may not be distinguished from blue supergiants on the basis of existing broadband surveys alone. Observationally, SN 2002ap (Type Ic) in M74 so far provides the most stringent constrain ...
... core-collapse SN (Type II-P, Smartt et al. 2004). Unfortunately, WR stars are vis ually much fainter than RSG and may not be distinguished from blue supergiants on the basis of existing broadband surveys alone. Observationally, SN 2002ap (Type Ic) in M74 so far provides the most stringent constrain ...
Finnish Centre for Astronomy with ESO
... cosmology, active galaxies, and galaxy formation and evolution, through properties of nearby galaxies, to supernovae and their progenitor stars, stellar magnetic activity, star formation and exoplanets in our own Galaxy. In our research, we use radio to gamma-rays multi-wavelength observational data ...
... cosmology, active galaxies, and galaxy formation and evolution, through properties of nearby galaxies, to supernovae and their progenitor stars, stellar magnetic activity, star formation and exoplanets in our own Galaxy. In our research, we use radio to gamma-rays multi-wavelength observational data ...
document
... Andromeda is wider and could be brighter than our own Milky Way. Andromeda’s disk is now believed to span as much as 228,000 light years in width. Andromeda’s disk is also about twice as large as the Milky Way’s. The brightest star cloud in Andromeda is NGC 206. There are two “dust rings” in Androme ...
... Andromeda is wider and could be brighter than our own Milky Way. Andromeda’s disk is now believed to span as much as 228,000 light years in width. Andromeda’s disk is also about twice as large as the Milky Way’s. The brightest star cloud in Andromeda is NGC 206. There are two “dust rings” in Androme ...
Brown et al. 2008 Studying Resolved Stellar
... One of the core goals of the James Webb Space Telescope (JWST) is to determine the history of star formation and metal enrichment in the Universe. JWST will pursue this goal primarily by searching for luminous objects at very high redshift. An important complement to the high-redshift observations w ...
... One of the core goals of the James Webb Space Telescope (JWST) is to determine the history of star formation and metal enrichment in the Universe. JWST will pursue this goal primarily by searching for luminous objects at very high redshift. An important complement to the high-redshift observations w ...
Chapter 15
... the hydrogen fuel in its core to make helium. The helium is basically just sitting there, so it's not producing any energy. Instead, the core is shrinking and getting hotter. Before long, it'll get hot enough to ignite the helium, which will begin fusing together to make heavier elements. When that ...
... the hydrogen fuel in its core to make helium. The helium is basically just sitting there, so it's not producing any energy. Instead, the core is shrinking and getting hotter. Before long, it'll get hot enough to ignite the helium, which will begin fusing together to make heavier elements. When that ...
Measuring Astronomical Distances
... The Ancient Universe Stars and other “heavenly bodies” move on transparent spheres The Earth is the center of the universe Aristotle 350 BC ...
... The Ancient Universe Stars and other “heavenly bodies” move on transparent spheres The Earth is the center of the universe Aristotle 350 BC ...
CH. 7 - science1d
... the stars. The next nearest star to Earth after the Sun is actually part of a group of three stars that orbit each other. This group is called the Centauri system (Figure 7.8). It lies about 4.3 ly away from the solar system. If it were possible for you to have a cellphone conversation with someone ...
... the stars. The next nearest star to Earth after the Sun is actually part of a group of three stars that orbit each other. This group is called the Centauri system (Figure 7.8). It lies about 4.3 ly away from the solar system. If it were possible for you to have a cellphone conversation with someone ...
Exploration of the Milky Way and Nearby galaxies
... The discovery of an extremely iron-poor star (S102054, [Fe/H] -3.8) in the Sculptor dwarf galaxy based on a medium-resolution spectrum (Kirby et al. 2009) cast some doubt on this conclusion. However, verification of the iron-deficiency and measurements of additional elements, such as the alpha-eleme ...
... The discovery of an extremely iron-poor star (S102054, [Fe/H] -3.8) in the Sculptor dwarf galaxy based on a medium-resolution spectrum (Kirby et al. 2009) cast some doubt on this conclusion. However, verification of the iron-deficiency and measurements of additional elements, such as the alpha-eleme ...
File - Mr. Gray`s Class
... All the stars visible with the naked eye and many others make up a huge spiral-shaped grouping called the Milky Way Galaxy. Being inside the dusty Milky Way Galaxy makes it hard for us to get a good picture of it - it's like trying to get a good photo of yourself from inside your stomach. Our best c ...
... All the stars visible with the naked eye and many others make up a huge spiral-shaped grouping called the Milky Way Galaxy. Being inside the dusty Milky Way Galaxy makes it hard for us to get a good picture of it - it's like trying to get a good photo of yourself from inside your stomach. Our best c ...
Galaxy Structure
... structural components are the disk including the barred bulge with a central cusp, and most likely four spiral arms, a halo as well as a more extended corona including the Magellanic clouds and at least seven nearby dwarf galaxies and a large number of globular star clusters (see figure 1). The tota ...
... structural components are the disk including the barred bulge with a central cusp, and most likely four spiral arms, a halo as well as a more extended corona including the Magellanic clouds and at least seven nearby dwarf galaxies and a large number of globular star clusters (see figure 1). The tota ...
the printable Observing Olympics Object Info Sheet in pdf
... NGC6572 – A very bright 8.1 magnitude Planetary Nebula, located in Ophiuchus and discovered in 1825 by Friedrich George Wilhelm Von Struve. Visually at low power it will appear as a colored star but higher magnification will reveal its disk. It has a very high surface brightness and some observers r ...
... NGC6572 – A very bright 8.1 magnitude Planetary Nebula, located in Ophiuchus and discovered in 1825 by Friedrich George Wilhelm Von Struve. Visually at low power it will appear as a colored star but higher magnification will reveal its disk. It has a very high surface brightness and some observers r ...
Our Place in Space
... International Space Station, Moon, Mars, Sun, Saturn, Pleiades, Orion Nebula, M13 Globular Cluster, Large Magellanic Cloud, Andromeda Galaxy, one of the Galaxy Clusters (Stephan’s Quintet or Virgo Supercluster; Although Stephan’s Quintet is further from Earth it is impossible for a student to kno ...
... International Space Station, Moon, Mars, Sun, Saturn, Pleiades, Orion Nebula, M13 Globular Cluster, Large Magellanic Cloud, Andromeda Galaxy, one of the Galaxy Clusters (Stephan’s Quintet or Virgo Supercluster; Although Stephan’s Quintet is further from Earth it is impossible for a student to kno ...
GG_CERN_0707
... Implications from Astrophysics: Can one plausibly build a dSph as observed without disturbing the DM? Star formation histories and IMF are easily determined survival history, energy input… ...
... Implications from Astrophysics: Can one plausibly build a dSph as observed without disturbing the DM? Star formation histories and IMF are easily determined survival history, energy input… ...
Galaxy
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas and dust, and dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally ""milky"", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few thousand (103) stars to giants with one hundred trillion (1014) stars, each orbiting their galaxy's own center of mass. Galaxies are categorized according to their visual morphology, including elliptical, spiral, and irregular. Many galaxies are thought to have black holes at their active centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than our own Sun. As of July 2015, EGSY8p7 is the oldest and most distant galaxy with a light travel distance of 13.2 billion light-years from Earth, and observed as it existed 570 million years after the Big Bang. Previously, as of May 2015, EGS-zs8-1 was the most distant known galaxy, estimated to have a light travel distance of 13.1 billion light-years away and to have 15% of the mass of the Milky Way.Approximately 170 billion (1.7 × 1011) to 200 billion (2.0 × 1011) galaxies exist in the observable universe. Most of the galaxies are 1,000 to 100,000 parsecs in diameter and usually separated by distances on the order of millions of parsecs (or megaparsecs). The space between galaxies is filled with a tenuous gas with an average density less than one atom per cubic meter. The majority of galaxies are gravitationally organized into associations known as galaxy groups, clusters, and superclusters. At the largest scale, these associations are generally arranged into sheets and filaments that are surrounded by immense voids.