Planetary Nebula
... A dying star that was once about five times the mass of the Sun is at the center of this fury. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet radiation that is making the cast-off material glow. This object is an example of a planetary nebula, so-named because man ...
... A dying star that was once about five times the mass of the Sun is at the center of this fury. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet radiation that is making the cast-off material glow. This object is an example of a planetary nebula, so-named because man ...
CloudsToSolarSystems_EXES
... Molecular gas (as mapped by CO emission) extends over even more of the space mapped out in previous image. ...
... Molecular gas (as mapped by CO emission) extends over even more of the space mapped out in previous image. ...
Teachers` Manual - Amundsen High School
... The Astronomical Unit - distance between Earth and Sun ...
... The Astronomical Unit - distance between Earth and Sun ...
Data Provided:
... paper is meant as a guide to the marks that can be obtained from each part. Questions from Section A are marked out of ve, whereas those from Section B are marked out of fteen. The breakdown on the right-hand side of the paper is meant as a guide to the marks that can be obtained from each part. ...
... paper is meant as a guide to the marks that can be obtained from each part. Questions from Section A are marked out of ve, whereas those from Section B are marked out of fteen. The breakdown on the right-hand side of the paper is meant as a guide to the marks that can be obtained from each part. ...
Magnetic fields in galaxies
... • Magnetic fields in our Milky Way Galaxy and nearby galaxies, Jin Lin Han 2012 • The Magnetic field of the Milky Way Galaxy, ...
... • Magnetic fields in our Milky Way Galaxy and nearby galaxies, Jin Lin Han 2012 • The Magnetic field of the Milky Way Galaxy, ...
2013. CCAT. All Rights Reserved.
... spectral surveys of galaxies, measuring the bright atomic fine-structure and molecular rotational transitions which cool the interstellar gas. Detected lines will provide redshifts for and interstellar gas conditions in tens of thousands of galaxies ranging from the early universe (z > 6) to the pre ...
... spectral surveys of galaxies, measuring the bright atomic fine-structure and molecular rotational transitions which cool the interstellar gas. Detected lines will provide redshifts for and interstellar gas conditions in tens of thousands of galaxies ranging from the early universe (z > 6) to the pre ...
Science and the Universe
... Some Remarks about the Scientific Process • New models/ideas are called hypotheses • Contrary to common beliefs, much is yet to be learned in astronomy (and physics in general) • New phenomena are observed constantly, and new hypotheses needed to explain these • Some observational facts are very we ...
... Some Remarks about the Scientific Process • New models/ideas are called hypotheses • Contrary to common beliefs, much is yet to be learned in astronomy (and physics in general) • New phenomena are observed constantly, and new hypotheses needed to explain these • Some observational facts are very we ...
PDF file - Memorie della SAIt
... are commonly observed in the galactic halo. At variance with the C(N) stars commonly observed in the galactic disk, the halo C-rich stars are usually also N-rich. They are dwarfs or giants, but not AGBs. Their composition is probably due to a mass transfer process from an AGB companion. Many of thes ...
... are commonly observed in the galactic halo. At variance with the C(N) stars commonly observed in the galactic disk, the halo C-rich stars are usually also N-rich. They are dwarfs or giants, but not AGBs. Their composition is probably due to a mass transfer process from an AGB companion. Many of thes ...
Stars and Galaxies
... shifted towards the red part of the visible spectrum The faster they move away from us, the more they are redshifted. Thus, redshift is a reasonable way to measure the speed of an object. When we observe the redshift of galaxies, almost every galaxy appears to be moving away from us – the Univer ...
... shifted towards the red part of the visible spectrum The faster they move away from us, the more they are redshifted. Thus, redshift is a reasonable way to measure the speed of an object. When we observe the redshift of galaxies, almost every galaxy appears to be moving away from us – the Univer ...
Contents - Classroom Complete Press
... a) Label the diagrams using the following words: star, solar system, galaxy. ...
... a) Label the diagrams using the following words: star, solar system, galaxy. ...
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 ...
Deep Space Mystery Note Form 3
... 1885 observation of supernova S Andromedae in the Andromeda galaxy was the first to be observed with a telescope. Provide info on cosmological distances In the 1960s some astromomers discovered the maximum intensities of supernova explosions could be used as a standered candles. Recent super ...
... 1885 observation of supernova S Andromedae in the Andromeda galaxy was the first to be observed with a telescope. Provide info on cosmological distances In the 1960s some astromomers discovered the maximum intensities of supernova explosions could be used as a standered candles. Recent super ...
A Deeper Look at Faint H $\ alpha $ Emission in Nearby Dwarf
... observed (i.e., no extinction corrections applied) Hα luminosity of these regions range from 5×1035 ergs s−1 to 2×1036 ergs s−1 , which corresponds to the ionizing fluxes of single B0V-O9V stars (Smith et al. 2002), assuming Case B recombination and that the HII regions are radiation bounded. If the ...
... observed (i.e., no extinction corrections applied) Hα luminosity of these regions range from 5×1035 ergs s−1 to 2×1036 ergs s−1 , which corresponds to the ionizing fluxes of single B0V-O9V stars (Smith et al. 2002), assuming Case B recombination and that the HII regions are radiation bounded. If the ...
Crash Galaxies
... their tissues forever, is not easy. The difference stems from a complex interplay of relative sizes, velocities and distribution of mass. Two galaxies that might pass right through each other at high velocities would probably merge if the velocities were considerably lower. The angle of attack may h ...
... their tissues forever, is not easy. The difference stems from a complex interplay of relative sizes, velocities and distribution of mass. Two galaxies that might pass right through each other at high velocities would probably merge if the velocities were considerably lower. The angle of attack may h ...
The Milky Way - The Independent School
... stellar velocities near the center of a galaxy: Infer mass in the very center central black holes! Several million, up to more than a billion solar masses! Supermassive ...
... stellar velocities near the center of a galaxy: Infer mass in the very center central black holes! Several million, up to more than a billion solar masses! Supermassive ...
PH607lec12
... Hubble and collaborators began a systematic study of nearby galaxies which included measuring both their distance (Cepheids etc) and radial velocity. They soon noticed a remarkable trend: virtually all the galaxies they observed were moving away from our galaxy (redshifted) and the recession speed i ...
... Hubble and collaborators began a systematic study of nearby galaxies which included measuring both their distance (Cepheids etc) and radial velocity. They soon noticed a remarkable trend: virtually all the galaxies they observed were moving away from our galaxy (redshifted) and the recession speed i ...
Feedback in low-mass galaxies in the early Universe
... that fast outflows in some massive galaxies may be powered by starbursts rather than by active galactic nuclei38,39. At lower masses, the decreasing efficiency of star formation is likely to be due to processes associated with the formation and evolution of massive stars. Galactic winds are driven b ...
... that fast outflows in some massive galaxies may be powered by starbursts rather than by active galactic nuclei38,39. At lower masses, the decreasing efficiency of star formation is likely to be due to processes associated with the formation and evolution of massive stars. Galactic winds are driven b ...
AST1100 Lecture Notes
... to about 10R⊙ . Giant stars fall in the range between 10R⊙ to about 100R⊙ whereas super giants may have radii of several 100 solar radii. The masses of stars range from 0.08M⊙ for the least massive stars up to about 100M⊙ for the most massive stars. We will later discuss theoretical arguments expla ...
... to about 10R⊙ . Giant stars fall in the range between 10R⊙ to about 100R⊙ whereas super giants may have radii of several 100 solar radii. The masses of stars range from 0.08M⊙ for the least massive stars up to about 100M⊙ for the most massive stars. We will later discuss theoretical arguments expla ...
Star Formation - Leslie Looney
... Talkin’ About a Revolution •! Molecules first showed up in the Universe after enough heavy elements accumulated. •! There is a lot of interstellar molecular gas clouds in space. •! First complicated molecules found in space in 1968, and we have found even more over the last 20 years. •! They often ...
... Talkin’ About a Revolution •! Molecules first showed up in the Universe after enough heavy elements accumulated. •! There is a lot of interstellar molecular gas clouds in space. •! First complicated molecules found in space in 1968, and we have found even more over the last 20 years. •! They often ...
AST1100 Lecture Notes
... why there is a lower and an upper limit of star masses. We will now start to look at the evolution of stars, from birth to death. Stars start out as huge clouds of gas contracting due to their own gravity. Thus a star starts out on the far right side of the HR-diagram, with a very low temperature. T ...
... why there is a lower and an upper limit of star masses. We will now start to look at the evolution of stars, from birth to death. Stars start out as huge clouds of gas contracting due to their own gravity. Thus a star starts out on the far right side of the HR-diagram, with a very low temperature. T ...
Efficiency of gas cooling and accretion at the disc-corona
... the model including warm gas in the turbulent wake generated by cloud–corona interaction. This new model is able to reproduce positions and velocities of the most of the warm absorbers observed in the Galactic halo. Accretion driven by galactic fountain seems to be a viable mechanism for star-formin ...
... the model including warm gas in the turbulent wake generated by cloud–corona interaction. This new model is able to reproduce positions and velocities of the most of the warm absorbers observed in the Galactic halo. Accretion driven by galactic fountain seems to be a viable mechanism for star-formin ...
Early Star-Forming Galaxies
... However, at the target distance (corresponding to the epoch 9 billion to 11 billion years ago), Herschel could only spot bright galaxies producing stars at a rate of 50 or more Sun-like stars a year. To analyze galaxies creating stars below this threshold, the astronomers added more than 18,000 sta ...
... However, at the target distance (corresponding to the epoch 9 billion to 11 billion years ago), Herschel could only spot bright galaxies producing stars at a rate of 50 or more Sun-like stars a year. To analyze galaxies creating stars below this threshold, the astronomers added more than 18,000 sta ...
Giant molecular clouds in the dwarf galaxy NGC 1569
... However, Maloney (1990) has argued that this MV T –LCO correlation is simply a result of the observed size-linewidth relation and would exist whether or not the GMCs were in virial equilibrium. In the end, the fact that conversion factors derived with this method generally agree with those derived f ...
... However, Maloney (1990) has argued that this MV T –LCO correlation is simply a result of the observed size-linewidth relation and would exist whether or not the GMCs were in virial equilibrium. In the end, the fact that conversion factors derived with this method generally agree with those derived f ...