White Dwarf Stars
... • Recently, Joe Taylor and Russell Hulse won a Nobel Prize for their study of pulsars. • These objects act as cosmic clocks and are useful for probing the dynamics of stars. ...
... • Recently, Joe Taylor and Russell Hulse won a Nobel Prize for their study of pulsars. • These objects act as cosmic clocks and are useful for probing the dynamics of stars. ...
Deep Space Objects
... New stars form inside nebulas, clouds of gas and dust that can span thousands of times the diameter of our entire Solar System. Some nebulas form when gas – mostly hydrogen and some helium – collects together in the space between existing stars. Others form due to the death of a star. After another ...
... New stars form inside nebulas, clouds of gas and dust that can span thousands of times the diameter of our entire Solar System. Some nebulas form when gas – mostly hydrogen and some helium – collects together in the space between existing stars. Others form due to the death of a star. After another ...
White Dwarf
... • The end of the sun will be a small, hot star that will last until the remaining material burns up. ...
... • The end of the sun will be a small, hot star that will last until the remaining material burns up. ...
Astronomy 170: Aug. 24 10am class
... • If you didn’t get the honors section instructions, get them from Megan. • We increased the enrollment limit for the honors section, Section 3. If you are in Section 2 and want honors credit for this class, you must fill out a change of section form and have Prof. Bechtold sign it. ...
... • If you didn’t get the honors section instructions, get them from Megan. • We increased the enrollment limit for the honors section, Section 3. If you are in Section 2 and want honors credit for this class, you must fill out a change of section form and have Prof. Bechtold sign it. ...
What is a galaxy?
... Rotation curve of the Galaxy: How fast objects move as a function of the distance to the galactic center. actual motion observed ...
... Rotation curve of the Galaxy: How fast objects move as a function of the distance to the galactic center. actual motion observed ...
Slide 1
... Before October 6, 1923, astronomers thought the Andromeda Nebula and similar objects were bright pockets of matter inside the Milky Way. On that day astronomer Edwin Hubble noticed, looking at the photograps, a particular type of star inside the Andromeda Nebula. Hubble realized that the star (Ceph ...
... Before October 6, 1923, astronomers thought the Andromeda Nebula and similar objects were bright pockets of matter inside the Milky Way. On that day astronomer Edwin Hubble noticed, looking at the photograps, a particular type of star inside the Andromeda Nebula. Hubble realized that the star (Ceph ...
Galaxy Independent Study Assignment
... arms, a bulge at its center, and a halo. Spiral galaxies have a variety of shapes, and they are classified according to the size of the bulge and the tightness and appearance of the arms. The spiral arms, which wrap around the bulge, contain many young blue stars and lots of gas and dust. Stars in t ...
... arms, a bulge at its center, and a halo. Spiral galaxies have a variety of shapes, and they are classified according to the size of the bulge and the tightness and appearance of the arms. The spiral arms, which wrap around the bulge, contain many young blue stars and lots of gas and dust. Stars in t ...
Laboratory Title: The Glittery Milky Way
... arms of the galaxy, and appears as a hazy band of white light in the night sky arching across the entire celestial sphere and originating from stars and other material that lie within the galactic plane. The stellar disk of the Milky Way galaxy is approximately 100,000 light-years (9.5×1017 km) in d ...
... arms of the galaxy, and appears as a hazy band of white light in the night sky arching across the entire celestial sphere and originating from stars and other material that lie within the galactic plane. The stellar disk of the Milky Way galaxy is approximately 100,000 light-years (9.5×1017 km) in d ...
Ay 102: Homework 5 (Blast waves, Supernova Remnant) S. R. Kulkarni
... 1050 erg and mass of ejecta (predominantly heavy elements) could be as much as 0.1 M . Redo the calculations for phase 1 and phase 2. 3. Stellar Winds Consider a star with a strong stellar wind: Ṁ = 10−6 M yr−1 and terminal velocity, vw = 103 km s−1 embedded in a medium with density, n0 . As befo ...
... 1050 erg and mass of ejecta (predominantly heavy elements) could be as much as 0.1 M . Redo the calculations for phase 1 and phase 2. 3. Stellar Winds Consider a star with a strong stellar wind: Ṁ = 10−6 M yr−1 and terminal velocity, vw = 103 km s−1 embedded in a medium with density, n0 . As befo ...
Hubblecast Episode 48: Deep Observations of the Andromeda
... To the naked eye, the Andromeda Galaxy just is just a huge, grey, faint patch in the sky. But the Hubble’s observations reveal an entirely different perspective, where the ethereal shape of the galaxy is resolved into individual stars. This is Dr J signing off for the Hubblecast. Once again, nature ...
... To the naked eye, the Andromeda Galaxy just is just a huge, grey, faint patch in the sky. But the Hubble’s observations reveal an entirely different perspective, where the ethereal shape of the galaxy is resolved into individual stars. This is Dr J signing off for the Hubblecast. Once again, nature ...
PHYSICS 113 Assignment #9 SOLUTIONS Chapter 17 13. Starting
... outpouring of energy from quasars?" How would you respond? Since black holes have mass, they have gravity and thus they attract matter towards them. When this matter moves inside the event horizon (also known as the Schwarzschild radius), it is no longer observable. This is because even light is tra ...
... outpouring of energy from quasars?" How would you respond? Since black holes have mass, they have gravity and thus they attract matter towards them. When this matter moves inside the event horizon (also known as the Schwarzschild radius), it is no longer observable. This is because even light is tra ...
ASTR101 Unit 14 Assessment Answer Key 1. It is believed that the
... factors and multiplying them is the number of communicating civilizations in the galaxy at the present time. 3. The principle argument for the nonexistence of extraterrestrial life is the Fermi paradox. If other technological civilizations exist, they would tend to spread out and colonize the galaxy ...
... factors and multiplying them is the number of communicating civilizations in the galaxy at the present time. 3. The principle argument for the nonexistence of extraterrestrial life is the Fermi paradox. If other technological civilizations exist, they would tend to spread out and colonize the galaxy ...
The Formation of Low Mass Stars: Overview and Recent
... observe the infalling gas in redshifted absorption against the background protostar Very high spectral resolution (<0.1 km/s) is required High sensitivity to observe in absorption against disk. ...
... observe the infalling gas in redshifted absorption against the background protostar Very high spectral resolution (<0.1 km/s) is required High sensitivity to observe in absorption against disk. ...
The galaxies that host powerful radio sources
... What do we know about these sources: Sub-mm flux combined with redshift gives very high farinfrared luminosity – 1000 times that of our galaxy. Making basic assumptions about the source properties one gets estimates for the mass of dust of ~100 million solar masses. Assuming powered by star formati ...
... What do we know about these sources: Sub-mm flux combined with redshift gives very high farinfrared luminosity – 1000 times that of our galaxy. Making basic assumptions about the source properties one gets estimates for the mass of dust of ~100 million solar masses. Assuming powered by star formati ...
Chemical Composition of Planetary Nebulae: The Galaxy and the
... Planetary nebulae (PN) are especially important for studies of the chemical evolution of the Galaxy and the Magellanic Clouds. They are the offspring of stars in a mass range of roughly 0.8 to 8 M , so that a relatively wide distribution of ages and population types can in principle be observed. Che ...
... Planetary nebulae (PN) are especially important for studies of the chemical evolution of the Galaxy and the Magellanic Clouds. They are the offspring of stars in a mass range of roughly 0.8 to 8 M , so that a relatively wide distribution of ages and population types can in principle be observed. Che ...
Stellar Dynamics
... nearest known cluster is the Virgo Cluster, located 15 to 20 Mpc from us, and containing about 1300 catalogued members. Groups are less dense entities and contain smaller number of galaxies. Our Galaxy, the Milky Way, is a member of a group we call the Local Group, which is about 1 Mpc in radius. Th ...
... nearest known cluster is the Virgo Cluster, located 15 to 20 Mpc from us, and containing about 1300 catalogued members. Groups are less dense entities and contain smaller number of galaxies. Our Galaxy, the Milky Way, is a member of a group we call the Local Group, which is about 1 Mpc in radius. Th ...
Clues to the Origin of the Solar System
... grains in circular orbits --those on noncircular orbits collide with particles and eventually dampen noncircular motion. ...
... grains in circular orbits --those on noncircular orbits collide with particles and eventually dampen noncircular motion. ...
Molecular Gas in Nearby Dwarf Galaxies:
... Taken together, suggest that what matters in the HIH2 conversion is the amount of matter in the disk (Σ*), not just the amount of “stuff” ...
... Taken together, suggest that what matters in the HIH2 conversion is the amount of matter in the disk (Σ*), not just the amount of “stuff” ...
5. Star Formation and the Interstellar Medium in the Milky Way
... by trace molecular constituents are critically important. In addition, the low temperatures (often < 10 K) and densities make these clouds interesting laboratories where the spectra and structure of a number of molecular species have been studied before this was possible in the laboratory5. Finally, ...
... by trace molecular constituents are critically important. In addition, the low temperatures (often < 10 K) and densities make these clouds interesting laboratories where the spectra and structure of a number of molecular species have been studied before this was possible in the laboratory5. Finally, ...
Compare the following sets of stars using the words: BRIGHTER or
... 17. A type of spiral with a thick band of stars through the middle ...
... 17. A type of spiral with a thick band of stars through the middle ...
Henriques B., White S., Lemson G., Thomas P., Guo Q., Marleau D
... observations, taking full advantage of the self-consistent evolution of galaxies Pre-processing step that shows Guo11 parametrization to be nearly optimal at z=0. Reincorporation change required by the evolution of galaxy ...
... observations, taking full advantage of the self-consistent evolution of galaxies Pre-processing step that shows Guo11 parametrization to be nearly optimal at z=0. Reincorporation change required by the evolution of galaxy ...
IAC_L4_halo
... Its mass is about 4.108 M and its stars are mostly metal poor, with [Fe/H] between about -1.0 and -3 (some down to at least -5). It is interesting because its stars are probably all old. The halo is spheroidal with axial ratio 0.5 to 0. Its radial density distribution follows (r) ~ r -2.5 to r -4. ...
... Its mass is about 4.108 M and its stars are mostly metal poor, with [Fe/H] between about -1.0 and -3 (some down to at least -5). It is interesting because its stars are probably all old. The halo is spheroidal with axial ratio 0.5 to 0. Its radial density distribution follows (r) ~ r -2.5 to r -4. ...