A very massive runaway star from Cygnus OB2⋆
... system is 58 84, very similar to the position angle of its resid- ...
... system is 58 84, very similar to the position angle of its resid- ...
Diapositiva 1
... Transient strong meridional currents, produced by the tidal action, transfer angular momentum between the stellar interior and the Ekman layer close to the surface. If ω>Ω the star spins down. ...
... Transient strong meridional currents, produced by the tidal action, transfer angular momentum between the stellar interior and the Ekman layer close to the surface. If ω>Ω the star spins down. ...
script (powerpoint)
... object. Planet e is confirmed as bound to HR 8799 and it is moving 46 ± 10 mas/year counter-clockwise. The orbits of the solar system's giant planets (Jupiter, Saturn, Uranus and Neptune) are drawn to scale (light gray circles). With a period of ~50 years, the orbit of HR 8799e will be rapidly const ...
... object. Planet e is confirmed as bound to HR 8799 and it is moving 46 ± 10 mas/year counter-clockwise. The orbits of the solar system's giant planets (Jupiter, Saturn, Uranus and Neptune) are drawn to scale (light gray circles). With a period of ~50 years, the orbit of HR 8799e will be rapidly const ...
Document
... • Stars in the disk all orbit the galactic center in about the same plane and in the same direction. Halo stars also orbit the center of the galaxy, but with orbits randomly inclined to the disk of the galaxy. • How long does it take the Sun to orbit the galactic center? • Each orbit takes about 230 ...
... • Stars in the disk all orbit the galactic center in about the same plane and in the same direction. Halo stars also orbit the center of the galaxy, but with orbits randomly inclined to the disk of the galaxy. • How long does it take the Sun to orbit the galactic center? • Each orbit takes about 230 ...
public_lector_10
... The dark halo was built up from mergers of smaller sub-halos Saw spiral structure developing in the gas Merging of galaxies is still going on now ...
... The dark halo was built up from mergers of smaller sub-halos Saw spiral structure developing in the gas Merging of galaxies is still going on now ...
ASTRO-114--Lecture 37-
... background behind an object you’re looking at and so you can tell how far away an object is by how much parallax you see with it from one eye to the other. In other words, looking at your thumb, shifting from one eye to the other, you see a shift. You can then tell your thumb is fairly close. Now, l ...
... background behind an object you’re looking at and so you can tell how far away an object is by how much parallax you see with it from one eye to the other. In other words, looking at your thumb, shifting from one eye to the other, you see a shift. You can then tell your thumb is fairly close. Now, l ...
Orion the Hunter
... Hunter. Its brightest stars form one of the best known celestial shapes, which is visible even from cities. The plane of the Milky Way clips the northeast corner of the constellation and manifests itself as a featureless, hazy band through the neighboring constellations of Gemini and Monoceros. Or ...
... Hunter. Its brightest stars form one of the best known celestial shapes, which is visible even from cities. The plane of the Milky Way clips the northeast corner of the constellation and manifests itself as a featureless, hazy band through the neighboring constellations of Gemini and Monoceros. Or ...
D109-08x
... opportunity to be catching some kind of transient evolutionary state in galaxy assembly. In addition, this new imaging data will better refine and inform efforts to obtain modern ground based spectroscopy of the individual knots to better characterize their abundances and the overall kinematics of t ...
... opportunity to be catching some kind of transient evolutionary state in galaxy assembly. In addition, this new imaging data will better refine and inform efforts to obtain modern ground based spectroscopy of the individual knots to better characterize their abundances and the overall kinematics of t ...
Is Protostellar Jet Spinning? Chin
... warm and dense molecular gas at high angular resolution, can be used to extract this crucial information from the jets. Herbig-Haro (HH) 211 is a well-defined bipolar (two-sided) jet located at only 1000 light-year away in the constellation Perseus. Lying close to plane of the sky, it is one of the ...
... warm and dense molecular gas at high angular resolution, can be used to extract this crucial information from the jets. Herbig-Haro (HH) 211 is a well-defined bipolar (two-sided) jet located at only 1000 light-year away in the constellation Perseus. Lying close to plane of the sky, it is one of the ...
Supernova
... When the surface layer explodes, the explosion can be violent enough to raise the core temperature above the 7 x 108 K required for the fusion of the carbon/oxygen core of the white dwarf. The carbon/oxygen fuse explosively, blowing the entire system into space and leaving nothing behind. ...
... When the surface layer explodes, the explosion can be violent enough to raise the core temperature above the 7 x 108 K required for the fusion of the carbon/oxygen core of the white dwarf. The carbon/oxygen fuse explosively, blowing the entire system into space and leaving nothing behind. ...
night watch - Warren Astronomical Society
... maximum of .09 for the other planets. Its orbit has the greatest inclination with respect to the ecliptic plane. Pluto’s orbit is inclined by 17 degrees while Mercury’s is inclined by only 7 degrees and the other planets are all inclined by 4 degrees or less. In a drawing of planetary orbits Pluto s ...
... maximum of .09 for the other planets. Its orbit has the greatest inclination with respect to the ecliptic plane. Pluto’s orbit is inclined by 17 degrees while Mercury’s is inclined by only 7 degrees and the other planets are all inclined by 4 degrees or less. In a drawing of planetary orbits Pluto s ...
The Circumstellar Medium of Massive Stars in Motion
... through the ISM for their full evolution. Nine systems have been simulated, representing the complete stellar evolution of three stars (with masses 10, 20, and 40 M ) moving with three different velocities through the ISM. We included thermal conduction by hot electrons as well as heating and cooli ...
... through the ISM for their full evolution. Nine systems have been simulated, representing the complete stellar evolution of three stars (with masses 10, 20, and 40 M ) moving with three different velocities through the ISM. We included thermal conduction by hot electrons as well as heating and cooli ...
Chapter 30: Stars
... However, astronomers can use special filters to observe the chromosphere when the Sun is not eclipsed. The chromosphere appears red, as shown in Figure 30-1B, because it emits most strongly in a narrow band of red wavelengths. The top layer of the Sun’s atmosphere, called the corona, extends several ...
... However, astronomers can use special filters to observe the chromosphere when the Sun is not eclipsed. The chromosphere appears red, as shown in Figure 30-1B, because it emits most strongly in a narrow band of red wavelengths. The top layer of the Sun’s atmosphere, called the corona, extends several ...
Low-Mass Star Formation Triggered by Supernova in Primordial
... low temperature gas ⇒ small Jeans mass ⇒ low mass star formation In early Universe (no dust, no metal), the gas cools to about 300-500K ...
... low temperature gas ⇒ small Jeans mass ⇒ low mass star formation In early Universe (no dust, no metal), the gas cools to about 300-500K ...
New Worlds Ahead: The Discovery of Exoplanets
... literature speculating about the possibility of detecting exoplanets by measuring the radial velocity of stars before the first detection. The most likely reason is that the first generation of spectroscopes were far from being accurate enough and did not allow much hope. Indeed, measuring a Doppler ...
... literature speculating about the possibility of detecting exoplanets by measuring the radial velocity of stars before the first detection. The most likely reason is that the first generation of spectroscopes were far from being accurate enough and did not allow much hope. Indeed, measuring a Doppler ...
Set 2: Nature of Galaxies
... • Non-constancy of the Ωlp will still cause winding but of the pattern and typically at a slower rate for (1, 2). • Where the local pattern speed matches the global pattern speed Lindblad resonances occur where the epicyclic amplitude increases due to forcing from the local density enhancement - can ...
... • Non-constancy of the Ωlp will still cause winding but of the pattern and typically at a slower rate for (1, 2). • Where the local pattern speed matches the global pattern speed Lindblad resonances occur where the epicyclic amplitude increases due to forcing from the local density enhancement - can ...
Chapter 25 - Haiku Learning
... he star Proxima Centauri is about 100 million times farther away from Earth than the moon. Yet, besides the sun, it is the closest star to Earth. The universe is incomprehensibly large. What is the nature of this vast universe? Do stars move, or do they remain in one place? Does the universe extend ...
... he star Proxima Centauri is about 100 million times farther away from Earth than the moon. Yet, besides the sun, it is the closest star to Earth. The universe is incomprehensibly large. What is the nature of this vast universe? Do stars move, or do they remain in one place? Does the universe extend ...
General Astronomy - Stockton University
... The 'Game' of Science The following example is from Richard Feynman, "What do we mean when we claim to 'understand' the Universe? We may imagine the enormously complicated situation of changing things we call the physical universe is a chess game played by the gods; we are not permitted to play, bu ...
... The 'Game' of Science The following example is from Richard Feynman, "What do we mean when we claim to 'understand' the Universe? We may imagine the enormously complicated situation of changing things we call the physical universe is a chess game played by the gods; we are not permitted to play, bu ...
2. The Anatomy of Stellar Life and Death
... with a very similar scaling of the mass of protostars. The observations were done in the millimeter (microwave) range where the dusty material comprising the nebula is transparent. This allowed detailed observations of the internal structure of the nebula. Beuther’s and Schilke’s work revealed a neb ...
... with a very similar scaling of the mass of protostars. The observations were done in the millimeter (microwave) range where the dusty material comprising the nebula is transparent. This allowed detailed observations of the internal structure of the nebula. Beuther’s and Schilke’s work revealed a neb ...
12.1 Introduction
... The requirement of course is that they must match the data, in this case provided by the H-R diagrams of clusters, where all the stars are assumed to ...
... The requirement of course is that they must match the data, in this case provided by the H-R diagrams of clusters, where all the stars are assumed to ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.