PowerPoint Presentation - Super Massive Black Holes
... telescope specially designed to detect Xray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes. ...
... telescope specially designed to detect Xray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes. ...
Aug 2015 supplement - Hermanus Astronomy
... Big Bang, the universe was full of a fog of hydrogen gas. But as more and more brilliant sources - both stars and quasars powered by huge black holes started to shine, they cleared away the mist and made the universe transparent to ultraviolet light. Astronomers call this the epoch of reionisation, ...
... Big Bang, the universe was full of a fog of hydrogen gas. But as more and more brilliant sources - both stars and quasars powered by huge black holes started to shine, they cleared away the mist and made the universe transparent to ultraviolet light. Astronomers call this the epoch of reionisation, ...
UNIT VIII/B: THE EARTH IN SPACE – STARS AND GALAXIES
... f. A star will expand, becoming a red giant, when the outward force of fusion is greater than the inward force of gravity. g. As fuel runs out in a star, fusion slows down. When the outward force of fusion is less than the inward force of gravity, the star will shrink in size, becoming a white dwarf ...
... f. A star will expand, becoming a red giant, when the outward force of fusion is greater than the inward force of gravity. g. As fuel runs out in a star, fusion slows down. When the outward force of fusion is less than the inward force of gravity, the star will shrink in size, becoming a white dwarf ...
Extragalactic AO Science
... Sensitivity increases rapidly with Strehl for point sources, but extended targets gain much less. AO systems produce additional background in Near-IR and reduce throughput further making it difficult to observe faint extended sources. Normal galaxy disks only achieve a maximum SB of K~16 mag/sq arcs ...
... Sensitivity increases rapidly with Strehl for point sources, but extended targets gain much less. AO systems produce additional background in Near-IR and reduce throughput further making it difficult to observe faint extended sources. Normal galaxy disks only achieve a maximum SB of K~16 mag/sq arcs ...
Position in Solar System ppt
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
... collapsed million own years gravity. after As the it did Big so, Bang, the matter thelarger gas star began to form. This star grew or stuck together to form the became contained within and dense it began enough to move for the inmore aforming first giant and larger as it collected more and of The st ...
File1 - School of Astronomy, IPM
... Overall mass of planets ~ 450 Earth mass Overall mass of metals ~ 50 Earth mass metals compose 1/100 of interstellar medium. So the mass of proto-planetary disk should be ~ 5000 Earth mass or at least 0.01 solar mass if condensation efficiency is 100 percent. Disk might be much lighter than star. ...
... Overall mass of planets ~ 450 Earth mass Overall mass of metals ~ 50 Earth mass metals compose 1/100 of interstellar medium. So the mass of proto-planetary disk should be ~ 5000 Earth mass or at least 0.01 solar mass if condensation efficiency is 100 percent. Disk might be much lighter than star. ...
The Size and Structure of the Milky Way Galaxy
... for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possibly/probably an unknown form o ...
... for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possibly/probably an unknown form o ...
Lecture 1 - Department of Physics and Astronomy
... When you look at an object 1 million light years away, you are looking at it 1 million years ago. The universe is thought to be 13.66 billion years old, so when you look back 12.7 billion years - are you looking back to a time when the universe was “young”. Cosmic evolution can be studied by looki ...
... When you look at an object 1 million light years away, you are looking at it 1 million years ago. The universe is thought to be 13.66 billion years old, so when you look back 12.7 billion years - are you looking back to a time when the universe was “young”. Cosmic evolution can be studied by looki ...
Kroupa - SatelliteGa.. - University of Hertfordshire
... the study. “Fragments from early collisions can form the revolving dwarf galaxies we see today” comments Dr Metz. But he adds that this introduces a paradox. “Calculations suggest that the dwarf satellites cannot contain any dark matter if they were created in this way. But this directly contradicts ...
... the study. “Fragments from early collisions can form the revolving dwarf galaxies we see today” comments Dr Metz. But he adds that this introduces a paradox. “Calculations suggest that the dwarf satellites cannot contain any dark matter if they were created in this way. But this directly contradicts ...
Astronomy Unit 4 Galaxies
... 34. The redshift caused by the expansion of the universe. ______________________ 35. Hubble’s Constant tells astronomers how _______________ the universe is expanding. 36. The approximate age of the universe determined by using Hubble’s Constant. __________________________________ 37. The distribut ...
... 34. The redshift caused by the expansion of the universe. ______________________ 35. Hubble’s Constant tells astronomers how _______________ the universe is expanding. 36. The approximate age of the universe determined by using Hubble’s Constant. __________________________________ 37. The distribut ...
Wavelength
... The Red Shift-Hubble Law • In 1929, Edwin Hubble published a paper about light from other galaxies. • All galaxies beyond the Local Group (our group of galaxies) show a red shift in their spectrum, this shows they are moving away from us. • The universe is EXPANDING!!!! ...
... The Red Shift-Hubble Law • In 1929, Edwin Hubble published a paper about light from other galaxies. • All galaxies beyond the Local Group (our group of galaxies) show a red shift in their spectrum, this shows they are moving away from us. • The universe is EXPANDING!!!! ...
Your Workpackage Monthly Status Report
... • At the position of S106IR (top) [CII] and CO 11-10 lane and cone are not just a shadow of the small disk around S106 IR, but indeed peak blue-shifted from the low-J CO lines showing very broad wings especially in [CII]. high column density, warm gas at the • At the other positions, CO 11-10 is muc ...
... • At the position of S106IR (top) [CII] and CO 11-10 lane and cone are not just a shadow of the small disk around S106 IR, but indeed peak blue-shifted from the low-J CO lines showing very broad wings especially in [CII]. high column density, warm gas at the • At the other positions, CO 11-10 is muc ...
Chapter 1 Our Place in the Universe
... A great island of stars in space, all held together by gravity and orbiting a common center ...
... A great island of stars in space, all held together by gravity and orbiting a common center ...
Document
... B. The pursuit of knowledge; discovering the unknown. C. Humility: Finding out that we are not the only ones, that life is just one possibility of existence. D. Understanding the connections between everything out there and everything here on Earth. E. We get to play with cool toys like telescopes a ...
... B. The pursuit of knowledge; discovering the unknown. C. Humility: Finding out that we are not the only ones, that life is just one possibility of existence. D. Understanding the connections between everything out there and everything here on Earth. E. We get to play with cool toys like telescopes a ...
Does size matter (in the SFRs)?
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
... sented the results on the SFRs of two small spiral galaxies with very similar HI content but with different size. According to Kennicutt (1998) they both should be galaxies are more the same locations of the graph, and have very similar values of the SFRs. On the contrary of course, UGC 5296 is not ...
not - ISDC
... ● How is the cosmos evolving? ● What different models are there for the evolution of the cosmos and what do they predict? ● What might be the future of the universe? ● How can we describe the beginning of the universe? ● What (anti-)particles and elements are abundant in the universe and how did the ...
... ● How is the cosmos evolving? ● What different models are there for the evolution of the cosmos and what do they predict? ● What might be the future of the universe? ● How can we describe the beginning of the universe? ● What (anti-)particles and elements are abundant in the universe and how did the ...
Lambda-CDM model
The ΛCDM (Lambda cold dark matter) or Lambda-CDM model is a parametrization of the Big Bang cosmological model in which the universe contains a cosmological constant, denoted by Lambda (Greek Λ), associated with dark energy, and cold dark matter (abbreviated CDM). It is frequently referred to as the standard model of Big Bang cosmology, because it is the simplest model that provides a reasonably good account of the following properties of the cosmos: the existence and structure of the cosmic microwave background the large-scale structure in the distribution of galaxies the abundances of hydrogen (including deuterium), helium, and lithium the accelerating expansion of the universe observed in the light from distant galaxies and supernovaeThe model assumes that general relativity is the correct theory of gravity on cosmological scales.It emerged in the late 1990s as a concordance cosmology, after a period of time when disparate observed properties of the universe appeared mutually inconsistent, and there was no consensus on the makeup of the energy density of the universe.The ΛCDM model can be extended by adding cosmological inflation, quintessence and other elements that are current areas of speculation and research in cosmology.Some alternative models challenge the assumptions of the ΛCDM model. Examples of these are modified Newtonian dynamics, modified gravity and theories of large-scale variations in the matter density of the universe.