The ISM
... In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
... In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
Star Formation
... • Without CO molecules to provide cooling, the clouds that formed the first stars had to be considerably warmer than today’s molecular clouds • The first stars must therefore have been more massive than most of today’s stars, for gravity to overcome pressure ...
... • Without CO molecules to provide cooling, the clouds that formed the first stars had to be considerably warmer than today’s molecular clouds • The first stars must therefore have been more massive than most of today’s stars, for gravity to overcome pressure ...
Galactic Star Formation Science with Integral Field
... resolved observations of collimated outflows toward protostars with higher mass than the sun-like T Tauris. • Keck Observatory LGS AO + OSIRIS IFU Observations of the very young Herbig Ae star LkHa 233 • Investigate whether the similarity on large spatial scales between outflows from T Tauri and Her ...
... resolved observations of collimated outflows toward protostars with higher mass than the sun-like T Tauris. • Keck Observatory LGS AO + OSIRIS IFU Observations of the very young Herbig Ae star LkHa 233 • Investigate whether the similarity on large spatial scales between outflows from T Tauri and Her ...
GUM31 Y ALREDEDORES
... the ionization of the gas. The HI gas emission distribution reveals an HI shell associated with RCW 78, which can be interpreted as an HI bubble linked to the ionized ring nebula. CO observations show the presence of molecular gas related to the nebula with velocities similar to those of the HI ...
... the ionization of the gas. The HI gas emission distribution reveals an HI shell associated with RCW 78, which can be interpreted as an HI bubble linked to the ionized ring nebula. CO observations show the presence of molecular gas related to the nebula with velocities similar to those of the HI ...
Lecture 18: Supernovae
... and carry off energy Makes the core collapse faster, as the insufficient pressure is decreased further ...
... and carry off energy Makes the core collapse faster, as the insufficient pressure is decreased further ...
Do Blue Compact Galaxies Have Red Halos?
... Deep, high-resolution observations of nearby halos should unravel point-sources with luminosities of single red giants but very strange colours ...
... Deep, high-resolution observations of nearby halos should unravel point-sources with luminosities of single red giants but very strange colours ...
SAMPLE TEST: Stars and Galaxies Multiple Choice Identify the letter
... 47. The most basic way to measure the distance to a star is ____________________. 48. A light-year is the distance ____________________ travels in a year. 49. Apparent magnitude refers to a star’s ____________________ as it appears from ____________________. 50. Some stars, called _________________ ...
... 47. The most basic way to measure the distance to a star is ____________________. 48. A light-year is the distance ____________________ travels in a year. 49. Apparent magnitude refers to a star’s ____________________ as it appears from ____________________. 50. Some stars, called _________________ ...
Galaxies (Professor Powerpoint)
... Every now and then galaxies collide especially those in large groups. Mergers are devastating events, they change the galaxy. Mergers can transform two spirals into an elliptical galaxy. Some astronomers think that galaxies are always born as spirals, and they can become ellipticals only via merger ...
... Every now and then galaxies collide especially those in large groups. Mergers are devastating events, they change the galaxy. Mergers can transform two spirals into an elliptical galaxy. Some astronomers think that galaxies are always born as spirals, and they can become ellipticals only via merger ...
UNIT VIII/B: THE EARTH IN SPACE – STARS AND GALAXIES
... reflects electromagnetic radiation, such as light or radio signals. Its composition is unknown. It can be detected by its gravitational effect on objects in space. f. If we can determine the amount of matter in the universe, we can predict its future. g. The universe may oscillate. This means that i ...
... reflects electromagnetic radiation, such as light or radio signals. Its composition is unknown. It can be detected by its gravitational effect on objects in space. f. If we can determine the amount of matter in the universe, we can predict its future. g. The universe may oscillate. This means that i ...
May
... known as the Hockey Stick Galaxy, the key features are the angled tilt of the disk and the apparent offset of the core. If observing at low magnification look in the same field of view for NGC4631, a more distant galaxy also seen edge-on. M64 is a type Sb spiral galaxy in the constellation Coma Bere ...
... known as the Hockey Stick Galaxy, the key features are the angled tilt of the disk and the apparent offset of the core. If observing at low magnification look in the same field of view for NGC4631, a more distant galaxy also seen edge-on. M64 is a type Sb spiral galaxy in the constellation Coma Bere ...
Gilmore
... Low luminosity, low surface-brightness satellite galaxies, ‘classical’ L ~ 106L, V >> 24 mag/sq Apparently dark-matter dominated ~ 10km/s, 10 < M/L < 100 Metal-poor, all contain very old stars; but ...
... Low luminosity, low surface-brightness satellite galaxies, ‘classical’ L ~ 106L, V >> 24 mag/sq Apparently dark-matter dominated ~ 10km/s, 10 < M/L < 100 Metal-poor, all contain very old stars; but ...
The universe is faster, colder, and wackier than anything we can
... too faint to see with the naked eye and, even through a telescope, they make a rather unimpressive couple. Each galaxy is about a thousand times less massive than the Milky Way, and both appear as unremarkable smudges in deep astronomical images. But what’s surprising about these two galaxies is the ...
... too faint to see with the naked eye and, even through a telescope, they make a rather unimpressive couple. Each galaxy is about a thousand times less massive than the Milky Way, and both appear as unremarkable smudges in deep astronomical images. But what’s surprising about these two galaxies is the ...
The night sky in October and November
... as carbon, oxygen, iron, nitrogen, and so on, are created from the hydrogen and helium as the star burns itself up. These heavier elements are dispersed through the ...
... as carbon, oxygen, iron, nitrogen, and so on, are created from the hydrogen and helium as the star burns itself up. These heavier elements are dispersed through the ...
Comparing molecular gas across cosmic time
... their natal molecular clouds. Given current instrumentational limitations, the only targets in the Universe for which this is possible are SF regions in the Milky Way (MW). For the foreseeable future, Galactic observational studies must therefore provide the benchmark for SF theories. However, the s ...
... their natal molecular clouds. Given current instrumentational limitations, the only targets in the Universe for which this is possible are SF regions in the Milky Way (MW). For the foreseeable future, Galactic observational studies must therefore provide the benchmark for SF theories. However, the s ...
Slide 1
... Science Drivers from Herschel Galaxy formation and evolution in early universe and the nature of active galaxies Star forming regions and interstellar medium physics in Milky Way and external galaxies Molecular chemistry of cometary, planetary and satellite atmospheres in solar system ...
... Science Drivers from Herschel Galaxy formation and evolution in early universe and the nature of active galaxies Star forming regions and interstellar medium physics in Milky Way and external galaxies Molecular chemistry of cometary, planetary and satellite atmospheres in solar system ...
Dark Matter in the Universe
... meters (81 miles) per second. As eager spectators, we must it. For every gram of glowing material we can detect, watch this encounter for a few decades to know if M31 will strike our galaxy or merely slide by. If they do collide, we will there may be tens of grams of dark matter out there. Currently ...
... meters (81 miles) per second. As eager spectators, we must it. For every gram of glowing material we can detect, watch this encounter for a few decades to know if M31 will strike our galaxy or merely slide by. If they do collide, we will there may be tens of grams of dark matter out there. Currently ...
Nova
... In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, called the Roche lobe, within which material is gravitationally bound to the star (see Figure 1). The Roche surface is, therefore, the surface along which the gravitational potential is comm ...
... In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, called the Roche lobe, within which material is gravitationally bound to the star (see Figure 1). The Roche surface is, therefore, the surface along which the gravitational potential is comm ...
This document was created for people who do not have access to
... This is a "late-blooming" galaxy, a small, distorted system of gas and stars that still appears to be in the process of development, even though most of its galactic cousins are believed to have started forming billions of years ago. Evidence of the galaxy's youthfulness can be seen in the burst of ...
... This is a "late-blooming" galaxy, a small, distorted system of gas and stars that still appears to be in the process of development, even though most of its galactic cousins are believed to have started forming billions of years ago. Evidence of the galaxy's youthfulness can be seen in the burst of ...
Chapter 26
... million to 10 billion stars, making them larger than dwarf ellipticals but smaller than spirals. ...
... million to 10 billion stars, making them larger than dwarf ellipticals but smaller than spirals. ...
Star Formation
... protostar looks starlike after the surrounding gas is blown away, but its thermal energy comes from gravitational contraction, not fusion 4) The collapsing gas becomes a young stellar object with an accretion disk and jets 4) When the young stellar object begins fusing hydrogen into helium it become ...
... protostar looks starlike after the surrounding gas is blown away, but its thermal energy comes from gravitational contraction, not fusion 4) The collapsing gas becomes a young stellar object with an accretion disk and jets 4) When the young stellar object begins fusing hydrogen into helium it become ...
- Amazing Space, STScI
... that resemble bubbles, islands and mountains, and triggering a new round of star birth. We begin our journey in the top-left corner, and travel counterclockwise along the edges of the Tactile Carina Nebula picture. Each touchable feature from the Carina Nebula Texture Legend is identified on this to ...
... that resemble bubbles, islands and mountains, and triggering a new round of star birth. We begin our journey in the top-left corner, and travel counterclockwise along the edges of the Tactile Carina Nebula picture. Each touchable feature from the Carina Nebula Texture Legend is identified on this to ...
FORMATION OF LATE-TYPE SPIRAL GALAXIES: GAS RETURN
... matter halos through a combination of hierarchical merging and gas accretion along cold streams. Cosmological simulations thus predict that galaxies rapidly grow their bulge through mergers and instabilities and end up with most of their mass in the bulge and an angular momentum much below the obser ...
... matter halos through a combination of hierarchical merging and gas accretion along cold streams. Cosmological simulations thus predict that galaxies rapidly grow their bulge through mergers and instabilities and end up with most of their mass in the bulge and an angular momentum much below the obser ...
Syllabus
... Students with disabilities are encouraged to contact the Disability Services office for a confidential discussion of their individual needs for academic accommodation. It is the policy of The University of Texas-Pan American to provide flexible and individualized accommodation to students with docum ...
... Students with disabilities are encouraged to contact the Disability Services office for a confidential discussion of their individual needs for academic accommodation. It is the policy of The University of Texas-Pan American to provide flexible and individualized accommodation to students with docum ...
Galaxy evolution - Pontifical Academy of Sciences
... The cosmic star formation history is one of the primary goals of galaxy formation and evolution studies. The modeling of galaxy evolution requires a better understanding of the relationships between large-scale star formation rate and the physical properties of the parent galaxies. Star forming gala ...
... The cosmic star formation history is one of the primary goals of galaxy formation and evolution studies. The modeling of galaxy evolution requires a better understanding of the relationships between large-scale star formation rate and the physical properties of the parent galaxies. Star forming gala ...