Galaxies
... • Using the 100-inch Hooker reflector telescope at Mount Wilson Observatory in California between 1922-1926, Hubble photographed numerous galaxies. ...
... • Using the 100-inch Hooker reflector telescope at Mount Wilson Observatory in California between 1922-1926, Hubble photographed numerous galaxies. ...
Gamma-Ray Bursts and Puzzles of Core
... The same envelope was observed during the XRF/GRB 060218 burst itself as a powerful black-body component in spectrum (the shock-breakout effect). Considering all early observations with other telescopes (ESO VLT, NOT, ESO Lick, and ESO VLT for 2006 Feb. 23.026) one may speak that we observe evolutio ...
... The same envelope was observed during the XRF/GRB 060218 burst itself as a powerful black-body component in spectrum (the shock-breakout effect). Considering all early observations with other telescopes (ESO VLT, NOT, ESO Lick, and ESO VLT for 2006 Feb. 23.026) one may speak that we observe evolutio ...
PDF
... today. His “tuning fork” diagram (figure 1) differentiates ellipticals from unbarred and barred spirals, further classified according to the tightness and fine structure of their spiral arms which appears to correlate with the fraction of light present in the central bulge. Intermediate to the spira ...
... today. His “tuning fork” diagram (figure 1) differentiates ellipticals from unbarred and barred spirals, further classified according to the tightness and fine structure of their spiral arms which appears to correlate with the fraction of light present in the central bulge. Intermediate to the spira ...
Activity III: Calibrating Images
... reference star. You do not need to know the exact brightness of the reference star, just that it remains constant. For images of objects beyond our own galaxy, foreground stars are typically chosen. These are stars within our galaxy that are in the same line of sight to the further away object. If t ...
... reference star. You do not need to know the exact brightness of the reference star, just that it remains constant. For images of objects beyond our own galaxy, foreground stars are typically chosen. These are stars within our galaxy that are in the same line of sight to the further away object. If t ...
The Role of Radioactive Isotopes in Astrophysics
... between beta decay and neutron capture that ensues when neutron capture by stable isotopes create isotopes that can undergo beta decay. Most do so quickly in comparison with the time required to capture another neutron, but some key branch points are slow to decay. B2 FH had inventively shown that s ...
... between beta decay and neutron capture that ensues when neutron capture by stable isotopes create isotopes that can undergo beta decay. Most do so quickly in comparison with the time required to capture another neutron, but some key branch points are slow to decay. B2 FH had inventively shown that s ...
Lecture-25 Notes - Georgia Southern University Astrophysics
... These massive galaxies (and their super-massive black holes) had formed before the universe was 1-billion years old!! A z = 7.1 QSO has recently been discovered. It formed ~300-million years after the creation of the universe!! ...
... These massive galaxies (and their super-massive black holes) had formed before the universe was 1-billion years old!! A z = 7.1 QSO has recently been discovered. It formed ~300-million years after the creation of the universe!! ...
Finding Dark Matter
... Microlensing to Detect Dark Matter • In 1986, B. Paczynski suggested using microlensing to detect MACHOs by their gravitational effect on stars in nearby dwarf galaxies such as the Magellanic Clouds Milky Way Halo Us ...
... Microlensing to Detect Dark Matter • In 1986, B. Paczynski suggested using microlensing to detect MACHOs by their gravitational effect on stars in nearby dwarf galaxies such as the Magellanic Clouds Milky Way Halo Us ...
Galaxy Sorting
... galaxies contain mostly old stars, with very little gas and dust found between stars. Since new stars form from clouds of interstellar gas and dust, elliptical galaxies lack the raw ingredients to make new stars. Spiral galaxies, on the other hand, have a mix of young and old stars. Interstellar ...
... galaxies contain mostly old stars, with very little gas and dust found between stars. Since new stars form from clouds of interstellar gas and dust, elliptical galaxies lack the raw ingredients to make new stars. Spiral galaxies, on the other hand, have a mix of young and old stars. Interstellar ...
21. Galaxy Evolution Agenda The Monty Hall Problem/Paradox 21.1
... • In the early 1960s, Maarten Schmidt identified the radio source 3C 273 with a faint, blue star. • the “star’s” spectrum displayed emission lines • the wavelengths of these lines matched no known element ...
... • In the early 1960s, Maarten Schmidt identified the radio source 3C 273 with a faint, blue star. • the “star’s” spectrum displayed emission lines • the wavelengths of these lines matched no known element ...
normal and active - FirstLight Astro
... search for globsters in distant galaxies, then estimate distance ...
... search for globsters in distant galaxies, then estimate distance ...
Galaxies
... b. contain a large number of very old stars and almost no gas or dust. c. are often associated with a galaxy that is colliding with another galaxy. d. are common in rich clusters. e. are composed of filaments and voids. An elliptical galaxy could a. evolve into an irregular galaxy when it has used u ...
... b. contain a large number of very old stars and almost no gas or dust. c. are often associated with a galaxy that is colliding with another galaxy. d. are common in rich clusters. e. are composed of filaments and voids. An elliptical galaxy could a. evolve into an irregular galaxy when it has used u ...
Quiz 2 Lecture 12
... a. Ring galaxies can be produced by head-on collisions between galaxies. b. The ratio of the number of elliptical to spiral galaxies remains constant over time. c. The Magellanic Clouds may eventually be "cannibalized" by our Galaxy. d. The shape of a galaxy can be influenced by collision with anoth ...
... a. Ring galaxies can be produced by head-on collisions between galaxies. b. The ratio of the number of elliptical to spiral galaxies remains constant over time. c. The Magellanic Clouds may eventually be "cannibalized" by our Galaxy. d. The shape of a galaxy can be influenced by collision with anoth ...
3D Tour of the Universe Template
... regions, resulting in the formation of new young stars. As is common in these kinds of encounters, spiral structure was induced in the more massive galaxy. M51 is an easily found astronomical showpiece if the sky is dark, where suggestions of its spiral arms may be visible. As is also common with th ...
... regions, resulting in the formation of new young stars. As is common in these kinds of encounters, spiral structure was induced in the more massive galaxy. M51 is an easily found astronomical showpiece if the sky is dark, where suggestions of its spiral arms may be visible. As is also common with th ...
Introduction to Observational Cosmology
... The measured redshift (often falsely interpreted as "recession velocity") of an object ...
... The measured redshift (often falsely interpreted as "recession velocity") of an object ...
Nucleosynthesis and Chemical Evolution of Oxygen
... To analyze the yields from massive stars, we consider a single model. While this is only one particular model, its yields are fairly representative of the ejecta from any star more than ten times the mass of the Sun. Chemical evolution models using detailed stellar model yields have long shown that ...
... To analyze the yields from massive stars, we consider a single model. While this is only one particular model, its yields are fairly representative of the ejecta from any star more than ten times the mass of the Sun. Chemical evolution models using detailed stellar model yields have long shown that ...
PPT
... But quasars with z = 6 have been found. This does NOT mean a velocity = 6x the speed of light!!! Why? Because the redshift is cosmological – due to expansion of space – NOT due to the Doppler Effect, so z is not equal to v/c In fact, 1/1+z is the size of the universe compared to now; z = 6 means tha ...
... But quasars with z = 6 have been found. This does NOT mean a velocity = 6x the speed of light!!! Why? Because the redshift is cosmological – due to expansion of space – NOT due to the Doppler Effect, so z is not equal to v/c In fact, 1/1+z is the size of the universe compared to now; z = 6 means tha ...
Review: How does a star`s mass determine its life story?
... move at nearly the speed of light. • Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4MSun • This is known as the Chandrasekhar limit. © 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley ...
... move at nearly the speed of light. • Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4MSun • This is known as the Chandrasekhar limit. © 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley ...
The presence of gamma rays in space was known before they were
... Gamma rays were first discovered in 1900 by Villiard, although they become known as gamma rays due to Rutherford. It was not until 1948 when Freeberg and Primakoff theorised that gamma rays are produced in space. The first actual gamma rays detected from space were detected by sensors mounted on a h ...
... Gamma rays were first discovered in 1900 by Villiard, although they become known as gamma rays due to Rutherford. It was not until 1948 when Freeberg and Primakoff theorised that gamma rays are produced in space. The first actual gamma rays detected from space were detected by sensors mounted on a h ...
Lecture 16
... First identified as bright radio sources - without visible counterparts In 1962 Maarten Schmidt identified a “star” coincident with the radio source and obtained a spectrum. He discovered it was not a star, and named it a QUASAR. ...
... First identified as bright radio sources - without visible counterparts In 1962 Maarten Schmidt identified a “star” coincident with the radio source and obtained a spectrum. He discovered it was not a star, and named it a QUASAR. ...
Power Point Presentation
... The data seem to indicate two kinds of GRBs • Those with burst durations less than 2 seconds • Those with burst durations more than 2 seconds Short bursts have no detectable afterglows so far as predicted by the NS/NS merger model Long bursts are sometimes associated with supernovae, and all the aft ...
... The data seem to indicate two kinds of GRBs • Those with burst durations less than 2 seconds • Those with burst durations more than 2 seconds Short bursts have no detectable afterglows so far as predicted by the NS/NS merger model Long bursts are sometimes associated with supernovae, and all the aft ...
Understanding the Astrophysics of Galaxy Evolution: the role of
... centers of dark matter halos are extremely complex. It is likely that we will never be able to model them “ab initio” using direct simulations in the way we now model dark matter evolution. One of the main problems hampering progress is the enormous dynamic range in scale that must considered when t ...
... centers of dark matter halos are extremely complex. It is likely that we will never be able to model them “ab initio” using direct simulations in the way we now model dark matter evolution. One of the main problems hampering progress is the enormous dynamic range in scale that must considered when t ...
Stellar Remnants White Dwarfs Type Ia Supernovae Neutron Stars
... © 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley ...
... © 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.